Eurotech Appliances ZEUS PXA270 User Manual
ZEUS  
PXA270 RISC based  
EPIC Single Board Computer  
Technical Manual  
ZEUS Technical Manual  
Contents  
Contents  
Product handling and environmental compliance ..............................................................................5  
Introduction........................................................................................................................................6  
ZEUS ‘at a glance’.................................................................................................................8  
ZEUS features .....................................................................................................................10  
ZEUS support products........................................................................................................13  
About this manual ............................................................................................................................14  
Conventions.........................................................................................................................14  
Getting started .................................................................................................................................16  
Using the ZEUS ...................................................................................................................16  
Detailed hardware description .........................................................................................................18  
ZEUS block diagram............................................................................................................18  
ZEUS address map .............................................................................................................19  
PXA270 processor...............................................................................................................20  
PXA270 GPIO pin assignments...........................................................................................22  
Interrupt assignments ..........................................................................................................28  
On-Board GPIO expanders pin assignments.......................................................................29  
Real time clock ....................................................................................................................31  
Watchdog timer....................................................................................................................32  
Memory................................................................................................................................33  
Wireless support..................................................................................................................35  
Expansion interfaces............................................................................................................38  
SDIO....................................................................................................................................39  
CompactFlash......................................................................................................................40  
PC/104 interface..................................................................................................................41  
Flat panel display.................................................................................................................44  
Audio....................................................................................................................................49  
Touchscreen controller.........................................................................................................50  
USB .....................................................................................................................................51  
Ethernet ...............................................................................................................................52  
Serial COM ports .................................................................................................................53  
CAN bus ..............................................................................................................................57  
I²C bus .................................................................................................................................58  
Quick Capture camera interface..........................................................................................59  
External General purpose I/O ..............................................................................................60  
Temperature sensor.............................................................................................................61  
JTAG and debug access......................................................................................................62  
Power and power management.......................................................................................................63  
Power supplies ....................................................................................................................63  
Processor power management............................................................................................66  
Peripheral devices power management...............................................................................68  
Connectors, LEDs and jumpers.......................................................................................................74  
Connectors ..........................................................................................................................76  
Jumpers...............................................................................................................................93  
Status LEDs .........................................................................................................................96  
Appendix A - Contacting Eurotech ...................................................................................................97  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Contents  
Appendix B - Specification...............................................................................................................98  
Appendix C - Mechanical diagram.................................................................................................100  
Appendix D - Reference information..............................................................................................102  
Appendix E - Wireless modem datasheets....................................................................................104  
Appendix F - ZEUS Modem details................................................................................................118  
Appendix G - ZEUS-FPIF details...................................................................................................122  
Appendix H - ZEUS-FPIF-CRT details...........................................................................................127  
Appendix H - Acronyms and abbreviations....................................................................................130  
Appendix I - RoHS-6 Compliance - Materials Declaration Form....................................................132  
Index ..............................................................................................................................................133  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Product handling and environmental compliance  
Product handling and environmental compliance  
Anti-static handling  
This board contains CMOS devices that could be damaged in the event of static  
electricity being discharged through them. At all times, please observe anti-static  
precautions when handling the board. This includes storing the board in appropriate  
anti-static packaging and wearing a wrist strap when handling the board.  
Packaging  
Please ensure that, should a board need to be returned to Eurotech Ltd, it is  
adequately packed (preferably in the original packing material).  
Electromagnetic compatibility (EMC)  
The ZEUS is classified as a component with regard to the European Community EMC  
regulations and it is the user’s responsibility to ensure that systems using the board  
are compliant with the appropriate EMC standards.  
RoHS compliance  
The European RoHS Directive (Restriction on the Use of Certain Hazardous  
Substances – Directive 2002/95/EC) limits the amount of six specific substances within  
the composition of the product. The ZEUS and associated accessory products are  
available as RoHS-6 compliant options and are identified by an -R6 suffix in the  
product order code. A full RoHS Compliance Materials Declaration Form is included in  
Appendix I - RoHS-6 Compliance - Materials Declaration Form. Further information  
about RoHS compliance is available on the Eurotech Ltd web site at www.eurotech-  
ltd.co.uk/RoHS_and_WEEE.  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Introduction  
Introduction  
The ZEUS is an ultra-low power, high performance, single board computer based on  
the PXA270 processor. The PXA270 is an implementation of the Intel XScale micro  
architecture, combined with a comprehensive set of integrated peripherals including:  
•
•
•
•
Flat panel graphics controller.  
Interrupt controller.  
Real time clock.  
Various serial interfaces.  
The ZEUS board is based on the EPIC form factor. Included as standard are:  
•
•
•
2 Ethernet ports.  
2 USB host ports.  
7 serial ports.  
The ZEUS includes a site for a variety of wireless modems and a GPS receiver, and is  
designed to create cost effective solutions in asset monitoring, asset tracking, mobile  
terminals and network communication controllers. The ZEUS also includes an onboard  
vehicle compatible DC/DC power supply to simplify system integration.  
The board is available in the standard variants specified in the following table:  
Variant  
Details  
Main features (all other features are included unless  
otherwise stated):  
ZEUS-M128-F32-001-R6  
•
•
•
•
•
Onboard DC/DC PSU.  
Dual Ethernet ports.  
LVDS transmitter.  
CAN bus controller.  
520MHz processor.  
This variant is included in the Development Kits.  
Main features (all other features are included unless  
otherwise stated):  
ZEUS-M128-F32-002-R6  
•
•
•
•
•
Dual Ethernet ports.  
LVDS transmitter.  
CAN bus controller.  
5V only (No DC/DC PSU).  
520MHz processor.  
continued…  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Introduction  
Variant  
Details  
Main features (all other features are included unless  
otherwise stated):  
ZEUS-M64-F32-003-R6  
•
•
•
5V only (No DC/DC PSU).  
No CAN bus, LVDS or secondary Ethernet port.  
520MHz processor.  
ZEUS-M128-F32-004-I-R6*  
Main features (all other features are included unless  
otherwise stated):  
•
•
•
Industrial temperature range (-40°C to +85°C).  
5V only (No DC/DC PSU).  
416MHz processor.  
Please note:  
ZEUS-Mx-Fy-zzz-R6  
ZEUS-Mx-Fy-zzz-I-R6*  
•
•
•
x can be 256, 128 or 64.  
y can be 64 or 32.  
zzz is a variant number based on different combinations  
of features.  
*
Industrial temperature range: -40°C (-40°F) to +85°C (+185°F). Please contact Eurotech Ltd for  
availability of industrial temperature options.  
The ZEUS board is fully RoHS-6 compliant.  
For alternative board configurations, please contact Eurotech Sales (see page 97).  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Introduction  
ZEUS ‘at a glance’  
10-30V input option  
Audio  
GPIO  
SRAM Camera PXA270 DRAM  
Flat panel LCD  
Touchscreen  
4-wire/5-wire  
Flat panel  
LCD – LVDS  
CAN bus  
Flash  
Reset switch  
JTAG  
Serial  
User  
RS422/485  
jumpers  
2x serial  
RS232/  
485/422  
10-30V  
Power input LEDs  
User  
2x  
Ethernet  
2x USB USB  
host client RS232  
Serial PC/104 Serial  
RS232  
SD/SDIO/  
MMC  
IEEE  
802.15.4 /  
ZigBee  
header  
DRAM  
CompactFlash (CF+)  
ZEUS  
wireless  
modem/  
GPS port  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Introduction  
5V input option  
5V power  
input  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Introduction  
ZEUS features  
Microprocessor  
•
PXA270 312/416/520MHz processor (520MHz fitted as standard).  
Cache  
•
32K data cache, 32K instruction cache, 2K mini data cache.  
System memory  
•
Fixed on-board memory:  
- 64/128/256 MB SDRAM (32-bit wide SDRAM data bus).  
Flash memory  
•
Fixed on-board memory - 32/64MB Flash.  
256 KB of SRAM battery backed on board.  
SRAM  
•
Video  
•
18-bit flat panel interface for STN and TFT displays.  
Optional LVDS interface.  
•
Serial ports  
•
4x UART fast serial ports - 4x 16550 compatible UARTs (921.6Kbaud):  
- 1x RS422/485 - software selectable.  
- 1x RS232/422/485 - software selectable.  
- 2x RS232.  
Wireless support  
•
GSM/GPRS, iDEN, CDMA modem and GPS using low profile add-on module.  
IEEE802.15.4 / ZigBee wireless interface using low profile add-on module.  
•
Network support  
•
2x 10/100Base-T Ethernet controllers (Davicom DM9000A).  
On-board dual-port RJ45 jack with LEDs.  
•
•
Factory build option for external Power-over-Ethernet (PoE).  
USB support  
•
2xUSB 1.1 host controller ports supporting 12MB/s and 1.5MB/s speeds.  
•
Alternatively, one host channel may be configured as a USB 1.1 client controller  
port supporting 12MB/s and 1.5MB/s speeds.  
•
•
•
Power switch included on board with 500mA current limit.  
2x USB A-type connectors for host ports.  
Header for client port.  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Introduction  
Expansion interfaces  
•
•
•
CompactFlash CF+ socket to support Type I,II form factor CF+ cards.  
SDIO socket to support MMC/SD/SDIO cards.  
16-bit PC/104 interface.  
Date/time support  
•
Real time clock – battery backed on-board (external to PXA270).  
Audio and touchscreen  
•
•
•
Wolfson WM9712L AC’97 compatible CODEC.!  
Line in, line out, microphone in, stereo amp out.  
Touchscreen support – 4/5-wire analogue resistive.  
Quick Capture camera interface  
•
•
Intel Quick Capture technology.  
Header connector to a camera image sensor.  
Multi-master serial bus, header connection.  
I2C bus  
•
Configuration EPROM  
•
I2C EPROM for storing configuration data.  
CAN bus  
•
Optional CAN 2.0B protocol controller and optoisolated transceiver.  
Watchdog timer  
•
External to PXA270, generates reset on timeout. Timeout range 1ms-60s.  
16 x general purpose I/O (20-pin header).  
General I/O  
•
Temperature sensor  
•
•
•
•
I2C temperature sensor.  
User LEDs  
Test support  
Reset  
Front panel user LEDs (3x yellow).  
JTAG interface (standard 20-pin ARM header).  
Reset button.  
Power requirements  
5V operation (8-pin ATX style connector) or 10-30V input (front panel DC  
connector).  
•
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Introduction  
Mechanical  
•
•
EPIC form factor (115mm x 165mm).  
Environmental  
Operating temperature:  
- Commercial: -20°C (-4°F) to +70°C (+158°F) for speed variants up to 520MHz.  
- Industrial: -40°C (-40°F) to +85°C (+185°F) for speed variants up to 416MHz.  
•
RoHS Directive Compliant (2002/95/EC).  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Introduction  
ZEUS support products  
The following products support the ZEUS:  
•
ZEUS Modem Board 1, a low profile module attached to the solder side of the  
ZEUS main board. It provides the following wireless connectivity options:  
- Quad band GSM/GPRS: Sony Ericsson GR64 or Dual band Siemens MC39i  
module.  
- iDEN: Motorola iO270 module (includes internal GPS receiver).  
- GPS: Fastrax iTRAX0312 channel GPS receiver module.  
See ZEUS Modem Board 1, page 118, for further details.  
•
•
ZEUS Modem Board 2, a low profile module attached to the solder side of the  
ZEUS board. It provides the following wireless connectivity:  
- Quad band GSM/GPRS: TELIT GE863-GPS module (includes internal GPS  
receiver).  
See ZEUS Modem Board 2, page 118, for further details.  
ZEUS Modem Board 3, a low profile module attached to the solder side of the  
ZEUS main board. It provides the following wireless connectivity:  
- GSM/GPRS: SierraWireless MC8780/MC8775/MC8755 modules.  
- CDMA: SierraWireless MC5720/MC5725 modules.  
- GPS: Fastrax iTRAX0312 channel GPS receiver module.  
See ZEUS Modem Board 3, page 119, for further details.  
•
ZigBee module (ZMx), a direct plug-in option for the ZEUS board that provides  
ZigBee (see www.zigbee.org) and IEEE 802.15.4 compatible wireless connectivity.  
It provides a fully functioning IEEE802.15.4 / ZigBee controller.  
See IEEE802.15.4 / ZigBee module (ZMx), page 37, for further details.  
•
•
ZEUS-FPIF (Flat Panel Interface), a simple board that enables easy connection  
between the ZEUS and a variety of LCD flat panel displays.  
See ZEUS-FPIF, page 122, for further details.  
ZEUS-FPIF-CRT, a board that allows the ZEUS to drive a CRT Monitor or an  
analogue LCD flat panel. Sync on green and composite sync monitors are not  
supported.  
See ZEUS-FPIF-CRT, page 127, for further details.  
Contact Eurotech Sales, page 97, for further information about any of the above  
products.  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
About this manual  
About this manual  
This manual describes the operation and use of the ZEUS single board computer. It is  
designed to be a reference and user manual and includes information about all aspects  
of the board.  
Conventions  
Symbols  
The following symbols are used in this guide:  
Symbol  
Explanation  
Note - information that requires your attention.  
Tip - a handy hint that may provide a useful alternative or save time.  
Caution – proceeding with a course of action may damage your  
equipment or result in loss of data.  
Jumper is fitted.  
Jumper is not fitted.  
3
2
1
Jumper fitted on pins 1-2.  
Jumper fitted on pins 2-3.  
3
2
1
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
About this manual  
Tables  
With tables such as that shown below, the white cells show information relevant to the  
subject being discussed. Grey cells are not relevant in the current context.  
Byte lane  
Most significant byte  
Least significant byte  
Bit  
15 14 13 12 11 10  
9
-
8
-
7
-
6
-
5
-
4
-
3
-
2
RETRIG  
0
1
0
R_DIS  
0
AUTO_  
CLR  
Field  
-
-
-
-
-
-
Reset  
X
X
X
X
X
X
X
X
0
0
0
0
0
0
Relevant  
information  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Getting started  
Getting started  
A ZEUS Quickstart Manual is provided with each Development Kit to enable you to set  
up and start using the ZEUS board. Please read the relevant manual and follow the  
steps explaining how to set up the board. Once you have completed this task, and your  
ZEUS system is working, you can start adding further peripherals enabling  
development to begin.  
This section explains how to set up and use some of the features of the ZEUS. For  
more detailed information on any aspect of the board see the section Detailed  
hardware description, page 18.  
Using the ZEUS  
Using the CompactFlash socket  
The ZEUS is fitted with a Type I/II CompactFlash socket mounted on the solder side of  
the board. The socket is connected to Slot 0 of the PXA270 PC card interface. It  
supports 3.3V Type I and II CompactFlash cards, for both memory and I/O. The ZEUS  
supports hot swap changeover of the cards and notification of card insertion.  
For more details see Expansion interfaces, page 38.  
5V CompactFlash cards are not supported.  
Using the serial interfaces (RS232/422/485)  
The four standard serial port interfaces on the ZEUS are fully 16550 compatible.  
Connection to the serial ports is made via two DB9 connectors, a 20-way header and a  
simple 5 way header. The pin assignment of the 20 way header has been arranged to  
enable 9-way IDC D-Sub plugs to be connected directly to the cable. See the section  
J19 – Serial ports – COM3/4, page 88, for pin assignments and connector details.  
See the section Serial COM ports, page 53, for further details.  
Using the audio features  
There are four audio interfaces supported on the ZEUS: amp out, line out, line in and  
microphone. The line in, line out and amp interfaces support stereo signals and the  
microphone provides a mono input. The amplified output is suitable for driving an 8Ω  
load with a maximum power output of 250mW per channel.  
Connections are routed to J11. See the sections Audio, page 49, and J4 – Audio  
connector, page 79, for further details.  
Using the USB ports  
The standard dual USB type ‘A’ connector is provided on the front panel. See the  
sections USB, page 51, and J8 – USB connector, page 81, for further details.  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Getting started  
Using the Ethernet interface  
The boot loader configures the Davicom DM9000A 10/100BaseTX Ethernet controller.  
Connection is made via a dual RJ45 connector. See the sections Ethernet, page 52,  
and J6 – Ethernet connector, page 80, for further details.  
Using the PC/104 expansion bus  
PC/104 modules can be used with the ZEUS to add extra functionality to the system.  
This interface supports 8/16 bit ISA bus style peripherals.  
Eurotech Ltd has a wide range of PC/104 modules, which are compatible with the ZEUS.  
These include modules for digital I/O, analogue I/O and motion control. Please contact  
Eurotech Sales (see page 97) if a particular interface you require does not appear to  
be available as these modules are in continuous development.  
In order to use a PC/104 board with the ZEUS it should be plugged into J12 for 8-bit  
cards and J12/J13 for 8/16-bit cards. See the sections ZEUS PC/104 interface details,  
page 41, and J12 & J13 – PC/104 connectors, page 84, for further details.  
The ISA interface on the ZEUS does not support DMA, shared interrupts and some  
access modes. See the section PC/104 interrupts, page 42, for details about PC/104  
interrupt use.  
The ZEUS provides +5V to a PC/104 add-on board via the J12 and J13 connectors. If  
a PC/104 add-on board requires a +12V supply, then +12V must be supplied to the  
ZEUS power connector J2 pin 4. If –12V or –5V are required, these must be supplied  
directly to the PC/104 add-on board.  
Using the ZEUS Modem Modules  
The ZEUS Modem modules can be used with the ZEUS to add wireless and GPS  
functionality to the system. Various wireless modems are supported to provide packet  
data, circuit switched data and voice connectivity on a wireless network. A 12 channel  
GPS receiver is also available on the ZEUS Modem module. The ZEUS Modem  
module is fitted on the solder side of the ZEUS board (connector J23).  
The FFUART serial port of PXA270 is used to communicate with the wireless modem,  
and STUART is used to communicate with GPS module. See the sections Wireless  
modem and GPS receiver, page 35, and J23 – Wireless modem/GPS module  
interface, page 91, for further details.  
Using the ZigBee Module  
The ZEUS ZigBee module can be used with the ZEUS to provide ZigBee  
(www.zigbee.org) and IEEE 802.15.4 compatible wireless connectivity. The BTUART  
serial port of PXA270 is used to communicate with the ZigBee module. The ZigBee  
module is fitted on the solder side of the ZEUS board (connector J21). For further  
details, see sections IEEE802.15.4 / ZigBee module, page 37.  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
Detailed hardware description  
This section provides a detailed description of the functions provided by the ZEUS.  
This information may be required during development after you have started adding  
extra peripherals, or are starting to use some of the embedded features.  
ZEUS block diagram  
The following diagram illustrates the functional organization of the ZEUS EPIC single  
board computer:  
ZEUS  
PXA270  
Power  
Amp  
Clocks  
Clock  
Audio  
Header  
Generation  
AC’97  
64/128 MB  
SDRAM  
AC'97  
Codec  
COM 1  
COM 2  
RS232  
Transceiver  
TSC  
Header  
DB9  
DB9  
32/64 MB  
FLASH  
LVDS  
Transmitter  
LVDS  
Header  
RS232  
Transceiver  
256 KB  
SRAM  
I2C  
LCD  
LCD  
Header  
RS232/422/  
485  
Transceiver  
COM 3  
USB 1.1 Host  
USB 1.1 Host  
2xUSB  
Conn.  
COMS  
Header  
QUAD  
UART  
COM 4  
RS422/485  
Transceiver  
USB 1.1 Client  
USB  
Header  
Serial  
EEPROM  
GPS  
Module  
STUART  
FFUART  
Ethernet  
Controller  
Transformer  
Transformer  
PSU  
2x  
RJ45  
GSM/  
3G  
Ethernet  
Controller  
Module  
Daughter Board  
Serial  
EEPROM  
BTUART  
ZigBee Module  
PC/  
104  
Buffers  
Buffers  
Quick Capture Camera  
I2C  
Header  
GPIO  
CPLD  
I2C  
CF  
Socket  
I/O  
I/O  
Expander  
Expander  
Header  
PM I2C  
Temp  
Sensor  
Config  
PROM  
Power  
Conn.  
10-30V  
Power  
5V  
DC/  
DC  
PSUs  
RTC  
Power  
Header  
5V  
JTAG  
JTAG  
Header  
Battery  
Reset  
Reset  
Button  
Reset  
IC  
CAN  
Transc  
eiver  
SPI1  
CAN  
controller  
Header  
GPIO  
User  
LEDs  
MMC/SD/SDIO  
SDIO  
Socket  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
ZEUS address map  
PXA270 chip select Physical address  
Bus width Description  
CS0#  
CS1#  
CS2#  
CS3#  
CS4#  
0x00000000 – 0x03FFFFFE  
0x04000000 – 0x07FFFFFE  
0x08000000 – 0x0BFFFFFE  
0x0C000000 – 0x0FFFFFFF  
0x10000000 – 0x11FFFFFE  
0x12000000 – 0x13FFFFFE  
0x14000000 – 0x17FFFFFE  
0x18000000 – 0x1FFFFFFF  
0x20000000 – 0x2FFFFFFE  
0x30000000 – 0x300003FF  
0x30000400 – 0x3BFFFFFF  
0x3C000000 – 0x3C1FFFFF  
0x3C200000 – 0x3FFFFFFF  
0x40000000 – 0x43FFFFFF  
0x44000000 – 0x47FFFFFC  
0x48000000 – 0x4BFFFFFC  
0x4C000000 – 0x4FFFFFFC  
0x50000000 – 0x53FFFFFC  
0x54000000 – 0x57FFFFFC  
0x58000000 – 0x5BFFFFFC  
0x5C000000 – 0x5C00FFFC  
0x5C010000 – 0x5C01FFFC  
0x5C020000 – 0x5C02FFFC  
0x5C030000 – 0x5C03FFFC  
0x5C040000 – 0X7FFFFFFF  
0x80000000 – 0x8FFFFFFF  
16-bit  
16-bit  
16-bit  
-
Flash memory/Silicon disk  
Ethernet controller 0  
Ethernet controller 1  
Reserved  
16-bit  
16-bit  
16-bit  
-
Quad UART  
CPLD registers  
CS5#  
SRAM  
-
Reserved  
-
16-bit  
8/16-bit  
-
CompactFlash  
-
PC/104 I/O space  
Reserved  
-
-
8/16-bit  
-
PC/104 memory space  
Reserved  
-
-
32-bit  
32-bit  
32-bit  
32-bit  
32-bit  
32-bit  
32-bit  
32-bit  
32-bit  
32-bit  
32-bit  
-
PXA270 peripherals1  
LCD control registers1  
Memory controller registers1  
USB host registers1  
Capture interface registers1  
Reserved  
-
-
-
-
-
-
Internal memory control1  
Internal SRAM bank 0  
Internal SRAM bank 1  
Internal SRAM bank 2  
Internal SRAM bank 3  
Reserved  
-
-
-
-
-
SDCS0#  
32-bit  
SDRAM (U2/U3)  
SDCS1#  
0x90000000 – 0x9FFFFFFF  
32-bit  
SDRAM (U41/U49)  
UART and CPLD address map  
PXA270 chip select Physical address  
Bus width Description  
CS4#  
0x10000000 – 0x107FFFFE  
0x10800000 – 0x10FFFFFE  
0x11000000 – 0x117FFFFE  
0x11800000 – 0x11FFFFFE  
0x12000000  
16-bit  
16-bit  
16-bit  
16-bit  
16-bit  
16-bit  
16-bit  
16-bit  
UART 1  
UART 2  
UART 3  
UART 4  
REG0 (CPLD Ver/Issue)  
REG1 (PC104 IRQ status)  
REG2 (CF Reset)  
REG3 (WD Register)  
0x12800000  
0x13000000  
0x13800000  
1 Details of the internal registers are in the Intel PXA27x Processor Family Developer’s  
Manual on the Development Kit CD.  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
PXA270 processor  
The ZEUS board is based on a PXA270 processor. The PXA270 processor is an  
integrated system-on-a-chip microprocessor for high performance, low power portable  
handheld and handset devices. It incorporates the Intel XScale technology with on-the-  
fly voltage and frequency scaling and sophisticated power management.  
The PXA270 processor complies with the ARM Architecture V5TE instruction set  
(excluding floating point instructions) and follows the ARM programmer’s model. The  
PXA270 processor also supports Intel Wireless MMX integer instructions in  
applications such as those that accelerate audio and video processing.  
The features of the PXA270 processor include:  
•
•
•
•
•
•
•
•
•
•
•
Intel XScale core.  
Power management.  
Internal memory - 256KB of on-chip RAM.  
Interrupt controller.  
Operating-system timers.  
Pulse-width modulation unit (PWM).  
Real time clock (RTC).  
General-purpose I/O (GPIO).  
Memory controller.  
DMA controller.  
Serial ports:  
- 3x UART.  
- Fast infrared port.  
- I2C bus port.  
- AC97 Codec interface.  
- I2S Codec Interface.  
- USB host controller (2 ports).  
- USB client controller.  
- 3x synchronous serial ports (SSP).  
•
•
•
•
•
•
•
•
•
LCD panel controller.  
Multimedia card, SD memory card and SDIO card controller.  
Memory stick host controller.  
Mobile scalable link (MSL) interface.  
Keypad interface.  
Universal subscriber identity module (USIM) interface.  
Quick Capture camera interface.  
JTAG interface.  
356-pin VF-BGA packaging.  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
The design supports 520MHz, 416MHz and 312MHz speed variants of the PXA270  
processor. The standard variant of the ZEUS board is fitted with the 520MHz version of  
PXA270. The maximum speed available for extended temperature versions of the  
ZEUS is 416MHz.  
A 13MHz external crystal is used to run the PXA270 processor. All other clocks are  
generated internally in the processor.  
The PXA270 processor family provides multimedia performance, low power  
capabilities and rich peripheral integration. Designed for wireless clients, it incorporates  
the latest Intel advances in mobile technology over its predecessor, the PXA255  
processor. The PXA270 processor features scalability by operating from 104MHz up to  
520MHz, providing enough performance for the most demanding control and  
monitoring applications.  
PXA270 is the first Intel Personal Internet Client Architecture (PCA) processor to  
include Intel Wireless MMX technology, enabling high performance, low power  
multimedia acceleration with a general-purpose instruction set. Intel Quick Capture  
technology provides a flexible and powerful camera interface for capturing digital  
images and video. Power consumption is also a critical component. Wireless Intel  
SpeedStep technology provides the new capabilities in low power operation.  
The processor requires a number of power supply rails. All voltage levels are  
generated on-board from either the DC/DC PSU or from the single +5V power input.  
The ZEUS uses a specialized Power Management IC to support Intel SpeedStep  
technology.  
The PXA270 processor is a low power device and does not require a heat sink for  
operating temperatures up to 85°C (185°F).  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
PXA270 GPIO pin assignments  
The table below summarizes the use of the 118 PXA270 GPIO pins, their direction,  
alternate function and active level.  
Key:  
AF  
Alternate function.  
Dir  
Pin direction.  
Active  
Function active level or edge.  
For details of pin states during sleep modes and reset see the Pin Usage table  
in the Intel PXA27x Processor Family Electrical, Mechanical and Thermal  
Specification.  
GPIO  
No AF Signal name Dir  
Wake-up  
source See section…  
Active Function  
3
3
0
0
AC97_IRQ  
Input  
AC97Interrupt  
Audio, page 49  
Reset in case of power  
failure  
1
0
DS_WAKEUP Input  
3
0
0
PWR_SCL  
PWR_SDA  
Output  
Power management IC,  
page 64  
PXA270 Power Manager I2C  
4
Bidir.  
5
N/A PWR_CAP0  
N/A PWR_CAP1  
N/A PWR_CAP2  
N/A PWR_CAP3  
Power  
Power  
Power  
Power  
Input  
6
Dedicated function - To  
achieve low power during  
sleep  
N/A  
7
8
3
3
3
3
9
0
0
0
0
UART_INTA  
UART_INTB  
UART 1 Interrupt  
UART 2 Interrupt  
UART 4 Interrupt  
UART 3 Interrupt  
10  
11  
12  
Input  
Serial COM ports,  
page 53  
UART_INTD Input  
UART_INTC Input  
JP1 – User jumpers,  
page 93  
3
13  
0
USER_LINK1 Input  
User Configurable Input  
continued…  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
GPIO  
Wake-up  
No AF Signal name Dir  
Active Function  
source See section…  
3
14  
15  
0
2
ETH0_IRQ#  
ETH_CS1#  
Input  
Ethernet 0 Interrupt  
Ethernet, page 52  
Ethernet, page 52  
Output Low Chip Select 1 – Ethernet 0  
See  
LCD backlight  
brightness control,  
page 47  
Inverter Backlight Brightness On/Off  
16  
17  
2
0
PWM0  
Output  
data  
sheet  
or variable if PWM  
PC/104 interrupts,  
page 42  
3
ISA_IRQ  
Input  
‘OR’ of PC/104 interrupts  
18  
19  
0
0
RESERVED  
BKLEN  
LCD logic and backlight  
power, page 46  
Output High LCD Backlight Enable  
ZEUS PC/104 interface  
details, page 41  
20  
0
ISA_RST#  
Input  
PC104 Reset Indication (IRQ)  
21  
22  
0
0
LVDS_EN  
Output High LVDS Transceiver Enable  
LVDS interface, page 47  
USB, page 51  
USB_PWE2  
Output High USB Port 2 Power Enable  
Camera Interface Master  
23  
24  
25  
26  
1
1
1
2
CIF_MCLK  
CIF_FV  
Output  
Input  
Input  
Input  
NA  
NA  
NA  
Clock  
Camera Interface Frame  
Sync -Vertical  
Quick Capture camera  
interface, page 59  
Camera Interface Line Sync  
- Horizontal  
CIF_LV  
Camera Interface Pixel  
Clock  
CIF_PCLK  
NA  
ZEUS Modem-1, page  
118  
27  
0
PTT  
Input  
High Push To Talk  
28  
29  
30  
31  
1
1
2
2
Input  
Input  
AC97 BIT CLOCK  
AC97_BITCLK  
AC97_DIN  
NA AC97 DATA IN  
Audio, page 49  
AC97_DOUT Output NA AC97 DATA OUT  
AC97_SYNC Output  
AC97 SYNC  
continued…  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
GPIO  
Wake-up  
No AF Signal name Dir  
Active Function  
source See section…  
32  
33  
2
2
MMCLK  
Output NA SDIO Clock  
SDIO, page 39  
SRAM_CS5# Output Low Chip Select 5 - SRAM  
Static RAM, page 34  
Wireless modem and  
GPS receiver, page 35  
34  
35  
1
0
GSM_FFRXD Input  
NA Modem Receive Data  
Compact Flash Card Detect  
IRQ  
3
CF_CD#  
Input  
CompactFlash, page 40  
36  
37  
38  
39  
1
1
1
2
Input  
Input  
NA Modem Data Carrier Detect  
NA Modem Data Sender Ready  
NA Modem Ring Indicator  
GSM_FFDCD#  
GSM_FFDSR#  
GSM_FFRI# Input  
Wireless modem and  
GPS receiver, page 35  
GSM_FFTXD Output NA Modem Transmit Data  
Modem Data Terminal  
Ready  
40  
2
Output NA  
GSM_FFDTR#  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
2
1
2
1
2
2
1
2
2
2
2
Output NA Modem Request To Send  
GSM_FFRTS#  
ZB_BTRXD  
ZB_BTTXD  
Input  
NA ZigBee Receive Data  
Output NA ZigBee Transmit Data  
IEEE802.15.4 / ZigBee  
module, page 37  
ZB_BTCTS# Input  
NA ZigBee Clear To Send  
ZB_BTRTS# Output NA ZigBee Request To Send  
Input  
GPS_STDRXD  
GPS_STDTXD  
CB_POE#  
NA GPS Receive Data  
NA GPS Transmit Data  
Wireless modem and  
GPS receiver, page 35  
Output  
Output Low Card Bus Output Enable  
Output Low Card Bus Write Enable  
Output Low Card Bus I/O Read  
Output Low Card Bus I/O Write  
CB_PWE#  
CB_PIOR#  
CB_PIOW#  
Expansion interfaces,  
page 38  
continued…  
© 2007 Eurotech Ltd Issue D  
24  
ZEUS Technical Manual  
Detailed hardware description  
GPIO  
Wake-up  
No AF Signal name Dir  
Active Function  
source See section…  
52  
53  
0
0
MMC_WP  
MMC_CD  
Input  
Input  
Low SDIO Write Protect Status  
SDIO Card Detect IRQ  
SDIO, page 39  
3
54  
55  
2
2
CB_PCE2#  
CB_PREG#  
Output Low Card Bus High Byte Enable  
Card Bus Register Space  
Output Low  
Select  
Expansion interfaces,  
page 38  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
CB_WAIT#  
CB_PIOIS16#  
LCD_D0  
LCD_D1  
LCD_D2  
LCD_D3  
LCD_D4  
LCD_D5  
LCD_D6  
LCD_D7  
LCD_D8  
LCD_D9  
LCD_D10  
LCD_D11  
LCD_D12  
LCD_D13  
LCD_D14  
LCD_D15  
Input  
Input  
Low Card Bus WAIT#  
Low Card Bus IOIS16#  
Output NA LCD Data Bit 0  
Output NA LCD Data Bit 1  
Output NA LCD Data Bit 2  
Output NA LCD Data Bit 3  
Output NA LCD Data Bit 4  
Output NA LCD Data Bit 5  
Output NA LCD Data Bit 6  
Output NA LCD Data Bit 7  
Output NA LCD Data Bit 8  
Output NA LCD Data Bit 9  
Flat panel display,  
page 44  
NA LCD Data Bit 10  
Output  
Output  
Output  
Output  
Output  
Output  
NA LCD Data Bit 11  
NA LCD Data Bit 12  
NA LCD Data Bit 13  
NA LCD Data Bit 14  
NA LCD Data Bit 15  
LCD Frame Clock (STN) /  
Vertical Sync (TFT)  
74  
75  
76  
77  
2
2
2
2
LCD_FCLK  
LCD_LCLK  
LCD_PCLK  
LCD_BIAS  
Output NA  
Output NA  
Output NA  
Output NA  
LCD Line Clock (STN) /  
Horizontal Sync (TFT)  
LCD Pixel Clock (STN) /  
Clock (TFT)  
LCD Bias (STN) / Data  
Enable (TFT)  
continued…  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
GPIO  
Wake-up  
No AF Signal name Dir  
Active Function  
source See section…  
78  
79  
2
1
ETH_CS2#  
Output NA Chip Select 2 - Ethernet 1  
Ethernet, page 52  
Expansion interfaces,  
page 38  
CB_PSKTSEL Output NA Card Bus Socket Select  
CPLD_CS4# Output Low Chip Select 4 – UART/CPLD  
UART and CPLD  
address map, page 19  
80  
2
81  
82  
83  
84  
1
1
1
1
SPI_TXD3  
SPI_RXD3  
SPI_CS3#  
SPI_CLK3  
Output  
Input  
NA SPI Transmit Data  
NA SPI Receive Data  
CAN bus, page 57  
Output Low SPI Chip Select  
NA SPI Clock  
Output  
Expansion interfaces,  
page 38  
85  
1
CB_PCE1#  
Output Low Card Bus Low Byte Enable  
86  
87  
2
2
LCD_D16  
LCD_D17  
Output NA LCD Data Bit 16  
Output NA LCD Data Bit 17  
Flat panel display,  
page 44  
USB Port 1 Over Current  
Detection  
88  
89  
90  
0
0
3
USB_OC1#  
USB_PWE1  
CIF_DD4  
Input  
USB, page 51  
High USB Port 1 Power Enable  
NA Camera Interface Data 4  
Output  
Input  
Quick Capture camera  
interface, page 59  
External General  
3
91  
92  
0
1
EX_GPIO_IRQ# Input  
External GPIO Interrupt  
NA SDIO Data 0  
purpose I/O, page 60  
Expansion interfaces,  
page 38  
MMDAT0  
Bidir.  
93  
94  
2
2
CIF_DD6  
CIF_DD5  
Input  
Input  
NA Camera Interface Data 6  
NA Camera Interface Data 5  
Quick Capture camera  
interface, page 59  
95  
96  
1
0
AC97_RST# Output Low AC97 Reset  
Audio, page 49  
Temperature Sensor  
Overtemp IRQ  
Temperature sensor,  
page 61  
OVERTEMP Input  
continued…  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
GPIO  
Wake-up  
No AF Signal name Dir  
Active Function  
source See section…  
Compact Flash Power  
Enable  
97  
0
2
0
3
0
CF_PWEN  
CIF_DD0  
CF_RDY  
Output High  
CompactFlash, page 40  
Quick Capture camera  
interface, page 59  
98  
Input  
Input  
NA Camera Interface Data 0  
Compact Flash Ready/Busy  
Status Flag  
99  
NA  
CompactFlash, page 40  
Wireless modem and  
GPS receiver, page 35  
100  
101  
GSM_FFCTS# Input  
NA Modem Clear To Send  
Flat panel display,  
page 44  
LCD_EN  
Output High LCD Logic Supply Enable  
JP1 – User jumpers,  
page 93  
3
102  
0
USER_LINK2 Input  
NA User Configurable  
103  
104  
105  
106  
107  
108  
1
1
1
1
1
1
CIF_DD3  
CIF_DD2  
CIF_DD1  
CIF_DD9  
CIF_DD8  
CIF_DD7  
Input  
Input  
Input  
Input  
Input  
Input  
NA Camera Interface Data 3  
NA Camera Interface Data 2  
NA Camera Interface Data 1  
NA Camera Interface Data 9  
NA Camera Interface Data 8  
NA Camera Interface Data 7  
Quick Capture camera  
interface, page 59  
109  
110  
111  
112  
1
1
1
1
MMDAT1  
MMDAT2  
MMDAT3  
MMCMD  
Bidir.  
Bidir.  
Bidir.  
Bidir.  
NA SDIO Data 1  
NA SDIO Data 2  
NA SDIO Data 3  
NA SDIO Command  
Expansion interfaces,  
page 38  
3
3
113  
114  
0
0
ETH1_IRQ#  
USB_OC2#  
Input  
Input  
Ethernet 1 Interrupt  
Ethernet, page 52  
USB, page 51  
USB Port 2 Overcurrent  
Detection IRQ  
Power supplies, page  
63  
115  
116  
0
0
IG_FAIL  
Input  
Input  
Ignition Fail IRQ  
CAN_IRQ#  
CAN Bus Interrupt  
CAN bus, page 57  
I²C bus, page 58  
117  
118  
1
1
I2C _SCL  
I2C _SDA  
Output  
Bidir.  
NA I2C Clock  
NA I2C Data  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
Interrupt assignments  
Internal interrupts  
For details on the PXA270 interrupt controller and internal peripheral interrupts please  
see the Intel PXA27x Processor Family Developer’s Manual on the Development Kit  
CD.  
External interrupts  
The following table lists the PXA270 signal pins used for external interrupts:  
PXA270 Pin Signal name  
Peripheral  
Wake-up  
Active  
Audio  
GPIO0  
AC97_IRQ  
GPIO_IRQ#  
UART_INTA  
UART_INTB  
UART_INTD  
UART_INTC  
USER_LINK1  
ETH0_IRQ#  
ISA_IRQ  
3
External GPIO  
UART 1  
GPIO1  
3
3
3
3
3
3
3
3
GPIO9  
UART 2  
GPIO10  
GPIO11  
GPIO12  
GPIO13  
GPIO14  
GPIO17  
GPIO20  
GPIO35  
GPIO53  
GPIO88  
GPIO91  
GPIO96  
GPIO99  
UART 4  
UART 3  
User defined  
Ethernet 0  
PC/104  
User defined  
PC/104  
ISA_RST#  
CF_CD#  
CompactFlash  
SDIO  
3
3
MMC_CD  
USB1  
USB_OC1#  
USER_LINK2  
OVERTEMP  
CF_RDY  
User defined  
Temperature sensor  
CompactFlash  
User defined  
Ethernet 1  
USB2  
3
User defined  
Ready =  
Busy =  
GPIO102 USER_LINK2  
GPIO113 ETH1_IRQ#  
GPIO114 USB_OC2#  
GPIO115 IG_FAIL#  
3
3
User defined  
PSU (10-30V)  
CAN Bus  
GPIO116 CAN_IRQ#  
3
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
On-Board GPIO expanders pin assignments  
Two GPIO expanders (MAX7313) are used to provide additional GPIOs for use with  
different on-board peripherals. The GPIO expanders are connected to the I2C bus of  
PXA270 and are accessible through I2C bus addresses 0x21 and 0x22.  
The following tables summarize the use of the 17 GPIO pins of MAX7313 on ZEUS  
board, and indicate their direction and active level.  
Expander 1 - I2C Address 0x21  
Power-up  
GPIO Signal name Dir  
Active Function  
state  
See section…  
0
1
U3_RS232EN Output High  
U3_RS422EN Output High  
UART3 RS232 enable PU  
COM3 –  
RS232/RS485/RS422  
interface, page 54  
UART3 RS422 enable PU  
UART3 termination  
enable  
2
U3_TERM#  
Output Low  
PU  
3
4
USER_LED1# Output Low  
USER_LED2# Low  
User LED 1  
User LED 2  
PU  
PU  
Output  
User LEDs, page 96  
5
6
7
8
USER_LED3# Output Low  
User LED 3  
PU  
USER_LINK3 Input  
NOT USED  
NA  
User jumper 3  
Jumper  
PU  
JP1 – User jumpers, page 93  
See note  
1 below  
GSM_ON  
Output  
Input  
Modem enable  
OD  
9
GSM_STS  
GPS_ON  
High  
Modem ON/OFF status Low  
Wireless modem and GPS  
receiver, page 35  
10  
11  
12  
13  
Output High  
GPS module enable  
Not Used  
PU  
PU  
OD  
GPS_PSUON Input  
GPS_BOOT Input  
NA  
NA  
NA  
Not Used  
GPS_PPS  
Input  
GPS Pulse Per Second -  
JP1 – User jumpers,  
page 93  
14  
15  
16  
USER_LINK4 Input  
NA  
User jumper 4  
Jumper  
U4_RS485EN Output High  
UART4 RS485 enable PU  
COM4 – RS422/485  
interface, page 55  
UART4 termination  
enable  
U4_TERM#  
Output Low  
PU  
Key:  
Dir - Pin direction  
PU - On-board 10K pull-up  
Active - Function active level or edge  
OD - Open Drain  
Note 1: Please see the datasheet of the particular module used.  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
Expander 2 - I2C Address 0x22  
GPIO Signal name Dir Active Function  
Power-up  
state  
See section…  
Clock generator power  
management, page 72  
Clock Synthesizer  
Shutdown  
0
CLK_SHDN#  
Output Low  
PU  
LVDS interface,  
page 47  
LVDS Falling Edge  
Strobe  
1
2
LVDS_FES#  
CAN_SHDN  
Output Low  
Output High  
PU  
PU  
CAN Transceiver  
shutdown  
CAN bus, page 57  
COM1 RS232  
transceiver shutdown  
3
4
U1_RS232_SHDN# Output Low  
U2_RS232_SHDN# Output Low  
PU  
PU  
COM Ports power  
management, page 73  
COM2 RS232  
transceiver shutdown  
COM3 –  
COM3 RS485  
RS232/RS485/RS422  
interface, page 54  
5
U3_RS485_SLO#  
Output Low  
Output Low  
transceiver slew rate PU  
control  
COM4 RS485  
transceiver slew rate PU  
control  
COM4 – RS422/485  
interface, page 55  
6
7
U4_RS485_SLO#  
NOT USED  
PU  
PCB Issue Number  
8-11 ISS [0-3]  
12-15 VER [0-3]  
Inputs NA  
Inputs NA  
PCB Version Number  
© 2007 Eurotech Ltd Issue D  
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Detailed hardware description  
Real time clock  
The ZEUS uses an external real time clock (RTC) (Intersil ISL1208) to store the date  
and time, and provide power management events. The RTC is connected to the I2C  
bus of the PXA270 processor and is accessible through I2C bus address 0x6F. The  
RTC is battery backed.  
The accuracy of the RTC is based on the operation of the 32.768 KHz watch crystal.  
The calibration tolerance is ±20ppm, which provides an accuracy of +/-1 minute per  
month when the board is operated at an ambient temperature of +25°C (+77°F). When  
the board is operated outside this temperature the accuracy may be degraded by  
-0.035ppm/ °C² ±10% typical. The watch crystal’s accuracy will age by ±3ppm max in  
the first year, then ±1ppm max in the year after, and logarithmically decrease in  
subsequent years.  
The Intersil ISL1208 RTC provides the following basic functions:  
•
•
Real time clock/calendar:  
- Tracks time in hours, minutes and seconds.  
- Day of the week, day, month and year.  
Single alarm:  
- Settable to the second, minute, hour, day of the week, day or month.  
- Single event or pulse interrupt mode.  
•
•
2 bytes battery-backed user SRAM.  
I2C interface.  
PXA270 has an internal real time clock, which doesn’t keep time after hardware reset,  
and should only be used as a wake-up source from deep-sleep.  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Detailed hardware description  
Watchdog timer  
The ZEUS uses an external watchdog timer (MAX6369) which can be used to protect  
against erroneous software. This is a programmable watchdog timer that can be  
adjusted for timeout periods of 1ms, 10ms, 30ms, 100ms, 1s, 10s and 60s. The board  
is reset when timeout occurs. The MAX6369 watchdog timer can be programmed  
using the WD setup register provided within the CPLD. The register is memory  
mapped (accessible through CS5#). The WDT is disabled upon reset, and remains so  
until enabled by the software.  
The following table shows the WD setup register bit definitions:  
Watchdog Register [REG3]  
Bits  
Description  
7:4  
3
Not used.  
WDI: Watchdog Input. If WDI remains either high or low for the  
duration of the watchdog timeout period (tWD), WDT triggers a reset  
pulse. The internal watchdog timer clears whenever a reset pulse  
is asserted or whenever WDI sees a rising or falling edge.  
2:0  
WDSET[2:0] – watchdog enable / timeout period setup bits.  
Hex Offset Address: 0x13800000  
Reset Hex Value:  
Access:  
0x03  
Read/write  
For further details, see the Intel PXA27x Processor Family Developer’s Manual on the  
Development Kit CD.  
© 2007 Eurotech Ltd Issue D  
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Detailed hardware description  
Memory  
The ZEUS has four types of memory fitted:  
•
32 or 64MB resident Flash disk containing:  
- Boot loader to boot operating system.  
- Operating system.  
- Application images.  
•
•
64, 128 or 256MB of SDRAM for system memory.  
Static RAM, as follows:  
- 256KB of SRAM internal to PXA270.  
- 256KB of SRAM external to PXA270 (battery backed).  
•
128 bytes of configuration EEPROM on the I²C bus.  
Flash memory  
The ZEUS supports 32MB or 64MB of Spansion (AMD) MirrorBit Flash memory for the  
boot loader, OS and application images. The Flash memory is arranged as 128Mbit x  
16-bit (32MB device) or as 256Mbit x 16-bit (64MB device).  
The Flash memory array is divided into equally sized symmetrical blocks that are  
64-Kword in size (128KB) sectors. A 256Mbit device contains 256 blocks, and a  
512Mbit device contains 512 blocks.  
Whenever the Flash memory is accessed the ‘Flash’ access LED is illuminated.  
SDRAM  
There are two standard memory configurations supported by the ZEUS: 64MB or  
128MB of SDRAM located in banks 0 and 1. The SDRAM is configured as 16MB x 32-  
bit (64MB), or 32MB x 32-bit (128MB). 64MB configuration is using 2 devices, and  
128MB configuration is using 4 devices, each with 4 internal banks of 4MB x 16-bit.  
Optional 256MB configuration is using 4 devices, each with 4 internal banks of 8MB x  
16-bit.  
These are surface mount devices soldered to the board. The size of memory fitted to  
the board is detected by software to configure the SDRAM controller accordingly.  
The SDRAM memory controller is set to run at frequency of 104MHz.  
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Static RAM  
The PXA270 processor provides 256KB of internal memory-mapped SRAM. The  
SRAM is divided into four banks, each consisting of 64KB.  
The ZEUS also has an external 256KB SRAM device fitted, arranged as 256Kbit x 8-  
bits. Access to the device is on 16-bit boundaries, whereby the least significant byte is  
the SRAM data and the 8-bits of the most significant byte are ‘don’t care’ bits. The  
reason for this is that the PXA270 is not designed to interface to 8-bit peripherals. This  
arrangement is summarized in the following data bus table:  
Most significant byte  
Least significant byte  
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0  
Don’t Care  
SRAM Data  
The external SRAM is non-volatile while the on-board coin cell battery is fitted.  
Configuration EEPROM  
The configuration EEPROM is interfaced directly to PXA270’s I2C controller. It is a  
Microchip 24AA01 1Kbit EEPROM organized as one block of 128 x 8-bit memory.  
The configuration EEPROM is addressable at I²C serial bus address 0x50 and is  
accessed in fast-mode operation at 400KB/s.  
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Detailed hardware description  
Wireless support  
The ZEUS can support various wireless modems, GPS functionality and an  
IEEE802.15.4 / ZigBee wireless sensor network interface. This is achieved using two  
optional add-on modules. GPS and cellular functionality are integrated on a single  
module (ZEUS Modem-n) while the IEEE802.15.4 / ZigBee port is provided by a  
separate module. Other cellular wireless modems such as EVDO, EDGE or satellite  
modems may be supported via this interface. Please contact Eurotech Sales (see page  
97) for more information about the available options.  
ZigBee Module Wireless Modem and GPS  
Wireless modem and GPS receiver  
Various wireless modems are supported to provide packet data, circuit switched data  
and voice connectivity on a wireless network. ZEUS also provides complete GPS  
functionality including position, velocity and time (PVT). The ZEUS modem module is  
fitted on the solder side of the ZEUS board (connector J23).  
The wireless modem is driven by the FFUART serial port (within the PXA270), while  
the GPS module uses the STUART serial interface (Rx/Tx only). For the connector  
details, see the section J23 – Wireless modem/GPS module interface, page 91.  
There are also a number of control/status GPIO signals connected to J23. They can be  
accessed through a GPIO Expander MAX7313. See the section On-Board GPIO  
expanders pin assignments, page 29.  
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ZEUS Modem-1 supports the following modules:  
•
Sony Ericsson GR64, a quad-band (850/900/1800/1900) version of GR47/48.  
Functionally comparable to the Sony Ericsson GR47/GR48 devices, the GR64  
offers a broad range of voice and data features. The integrated TCP/IP stack  
enables effective use of GPRS. For further details see Sony Ericsson GR64,  
page 104.  
•
•
Siemens MC35i/39i, a dual-band GSM/GPRS module (EGSM 900/1800MHz). For  
further details see Siemens MC35i/39i, page 106.  
Fastrax iTrax03/8, a 12-channel GPS receiver. iTrax03/8 features low power  
consumption, small footprint, 8Mbit internal Flash and does not require battery  
backup. For further details see Fastrax iTrax03/8, page 108.  
•
Motorola iO270, a wireless modem that provides packet data, circuit data and  
voice connectivity on the iDEN 800MHz network. The iO270 include a GPS  
receiver. For further details see Motorola iO270, page 110.  
For further details about this modem see the section ZEUS Modem-1, page 118.  
ZEUS Modem-2 supports the following wireless module with built-in GPS receiver:  
•
Telit GE863-GPS module, which supports communication services in quad-band  
EGSM 850/900/1800/1900MHz networks. For further details see Telit GE863-GPS,  
page 112.  
For further details about ZEUS Modem-2, see the section ZEUS Modem-2, page 118.  
ZEUS Modem-3 supports the following wireless modules:  
•
•
•
Sierra Wireless MC8775 PCI Express Mini Card embedded module, which offers  
connectivity to all three HSDPA/UMTS frequency bands (850, 1900, 2100 MHz)  
and all four EDGE/GPRS bands (850, 900, 1800 and 1900 MHz) used worldwide.  
For further details see Sierra Wireless MC8775, page 114.  
Sierra Wireless MC5720 PCI Express Mini Card embedded module, which offers  
a complete wireless data solution over CDMA 1x EVDO networks with typical  
download data rates of 400-700 kbps. For further details see Sierra Wireless  
MC5720, page 116.  
Fastrax iTrax03/16, a 12-channel GPS receiver. iTrax03/16 features low power  
consumption, small footprint, 16Mbit internal Flash and does not require battery  
backup. For further details see Fastrax iTrax03/8, page 108.  
For further details about ZEUS Modem-3, see the section ZEUS Modem-3, page 119.  
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Detailed hardware description  
IEEE802.15.4 / ZigBee module (ZMx)  
IEEE802.15.4 / ZigBee is the wireless standards-based technology that addresses the  
unique needs of remote monitoring and control for sensor level network applications.  
ZigBee enables deployment of wireless networks with low cost, low power solutions  
sensor devices and offers the ability to run remote sensors for years on inexpensive  
primary batteries. For more information, see www.zigbee.org/en/about/.  
The ZigBee module is connected to the PXA270 processor using BTUART serial  
interface (Rx, Tx, RTS#, CTS#). For the connector details see the section J21 –  
IEEE802.15.4 / ZigBee connector, page 90.  
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Detailed hardware description  
Expansion interfaces  
There are three expansion interfaces on the ZEUS: SDIO, PC/104 and CompactFlash.  
PC/104 and CompactFlash interfaces are connected to the PC card memory controller  
of the PXA270 with the use of some ‘glue logic’ implemented in a CPLD (Xilinx  
XC9536XL). There is a CPLD Firmware version/issue register that can be accessed at  
the address 0x12000000.  
CPLD ver/issue register [REG0]  
Byte lane  
Most significant byte  
Least significant byte  
[7:4]  
Bit  
15 14 13 12 11 10 9 8  
[3:0]  
Field  
Reset  
R/W  
-
-
-
-
-
-
-
-
VER[3:0]  
ISSUE[3:0]  
Current Issue  
X X X X X X X X  
Current Version  
-
-
-
-
-
-
-
-
Read Only  
Address  
0x12000000  
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SDIO  
The SD card socket J22 is interfaced directly to PXA270’s MMC/SD/SDIO controller.  
The MMC/SD/SDIO controller supports multimedia card, secure digital and secure  
digital I/O communications protocols. The MMC controller supports the MMC system, a  
low cost data storage and communications system. The MMC controller in the PXA270  
processor is based on the standards outlined in the MultiMediaCard System  
Specification Version 3.2. The SD controller supports one SD or SDIO card based on  
the standards outlined in the SD Memory Card Specification Version 1.01 and SDIO  
Card Specification Version 1.0 (Draft 4).  
The MMC/SD/SDIO controller features:  
•
•
•
Data transfer rates up to 19.5Mbit/s for MMC, 1-bit SD and SPI mode data  
transfers, and up to 9.75Mbit/s for 1-bit SDIO.  
Data transfer rates up to 78Mbit/s for 4-bit SD data transfers, and up to 39Mbit/s for  
SDIO.  
Support for all valid MMC and SD/SDIO protocol data transfer modes.  
This is a hot swappable 3.3V interface, controlled by the detection of a falling edge on  
GPIO53 when an SD card has been inserted, and a rising edge when an SD card is  
removed.  
SD card write protection is connected to PXA270’s GPIO52, and card detect to  
GPIO53.  
A variety of SDIO cards are available, such as a Bluetooth and IEEE802.11b (WiFi).  
More information can be found here: www.sdcard.org/sdio.  
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CompactFlash  
A CompactFlash extension socket for full I/O mode operation is provided by slot 0 of  
the PXA270 PC card controller, and supports type I,II CF+ cards. It appears in PC card  
memory space socket 0.  
Address  
Region name  
0x20000000 – 0x23FFFFFF  
0x24000000 – 0x27FFFFFF  
0x28000000 – 0x2BFFFFFF  
0x2C000000 – 0x2FFFFFFF  
Socket 0 I/O Space.  
Reserved.  
Socket 0 Attribute Memory Space.  
Socket 0 Common Memory Space.  
This is a hot swappable 3.3V interface, controlled by the detection of a falling edge on  
GPIO35 of PXA270 when a CompactFlash card has been inserted (CF_CD#). On  
detection, set GPIO97 (CF_PWEN) to logic ‘1’ to enable the 3.3V supply to the  
CompactFlash connector. The CompactFlash RDY/BSY# signal interrupts on PXA270’s  
GPIO99.  
Many CF+ cards require a reset once they have been inserted. To reset the  
CompactFlash socket independently set the CF_RST bit to ‘1’ in the REG2 register  
located at the address 0x13000000. To clear the CompactFlash reset write ‘0’ to the  
CF_RST bit.  
CF reset register [REG2]  
Byte lane  
Most significant byte  
Least significant byte  
15 14 13 12 11 10  
9
-
8
-
7
-
6
-
5
-
4
-
3
-
2
-
1
-
0
CF_RST  
0
Bit  
-
X
-
-
X
-
-
X
-
-
X
-
-
X
-
-
X
-
Field  
Reset  
R/W  
X
-
X
-
X
-
X
-
X
-
X
-
X
-
X
-
X
-
R/W  
Address  
0x13000000  
CF+ is a small form factor card standard. It encompasses CompactFlash (CF) Flash  
data storage cards, magnetic disk cards and I/O cards including serial cards, Ethernet  
cards, fax/modem cards, digital phone cards, USB, barcode scanners, Bluetooth,  
IEEE802.11b (WiFi), wireless digital cell phone cards, and so on. For more details about  
CF+ standards and the availability of particular CF+ peripherals, see  
www.compactflash.org.  
The CF+ card provides high capacity data storage and I/O functions that electrically  
comply with the Personal Computer Memory Card International Association (PCMCIA)  
standard.  
For connection details for the standard 50 pin CompactFlash connector, see J20 –  
CompactFlash connector, page 89.  
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Detailed hardware description  
PC/104 interface  
The ZEUS PC/104 interface is emulated from the PXA270 PC card interface to support  
8/16 bit ISA bus style signals. As the interface is an emulation, the ZEUS does not  
support some PC/104 features. Please refer to the section Unsupported PC/104  
interface features on page 43 for specific details.  
Add-on boards can be stacked via the PC/104 interface to enhance the functionality of  
the ZEUS. Eurotech Ltd has an extensive range of PC/104 compliant modules and  
these can be used to quickly add digital I/O, analogue I/O, serial ports and motion  
control.  
The ISA bus is based on the x86 architecture and is not normally associated with RISC  
processors. It is generally necessary to modify standard drivers to support any third  
party PC/104 modules.  
Any PC/104 add-on board attached to the ZEUS is accessible from the PC card  
memory space socket 1. The memory map is shown in the following table:  
Address  
Region size Region name  
0x30000000 – 0x300003FF  
1KByte  
-
PC/104 I/O space, 8/16-bit.  
0x30000400 – 0x3BFFFFFF  
0x3C000000 – 0x3C1FFFFF  
Reserved.  
16MB  
PC/104 memory space,  
16-bit (or 8-bit write only).  
ZEUS PC/104 interface details  
The PC/104 bus signals are compatible with the ISA bus electrical timing definitions.  
All signals between the PXA270 and the PC/104 are buffered. When the PC/104 bus is  
not in use, all output signals with the exception of the clock signals are set to their  
inactive state.  
The ZEUS provides +5V to a PC/104 add-on board via the J12 and J13 connectors. If  
a PC/104 add-on board requires a +12V supply, then +12V must be supplied to the  
ZEUS power connector J2 pin 4. If –12V or –5V are required, these must be supplied  
directly to the PC/104 add-on board.  
The reset signal applied to the PC/104 bus is combination of the RESET_OUT# pin of  
PXA270 and an additional circuit that monitors +5V supply.  
Due to the specific power management requirements of the PXA270, there is no reset  
generated to PXA270 if the +5V supply is below its limits. If the reset is generated to  
the PC/104 bus by the +5V monitoring IC, an interrupt can be asserted to PXA270 on  
GPIO20.  
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Detailed hardware description  
PC/104 interrupts  
The PC/104 interrupts are combined together so that any interrupt generated on the  
PC/104 interface generates a single interrupt on the GPIO17 pin of the PXA270  
processor.  
Reading the PC104_IRQ register located at the address 0x12800000 can identify the  
PC/104 interrupting source. The registers indicate the status of the interrupt lines at the  
time the register is read. The relevant interrupt has its corresponding bit set to ‘1’. The  
PXA270 is not designed to interface to 8-bit peripherals, so only the least significant  
byte from the word contains the data.  
PC/104 interrupt register [REG1]  
Byte lane  
Most significant byte  
Least significant byte  
Bit  
15 14 13 12 11 10 9  
8
7
6
5
4
3
2
1
0
Field  
Reset  
R/W  
-
X
-
-
X
-
-
X
-
-
X
-
-
X
-
-
X
-
-
X
-
- IRQ12IRQ11IRQ10 IRQ7 IRQ6 IRQ5 IRQ4 IRQ3  
X
-
0
0
0
0
0
0
0
0
R/W  
Address  
0x12800000  
Once the PXA270 microprocessor has serviced a PC/104 interrupt, the corresponding  
bit in the PC104_IRQ register has to be cleared by writing a ‘1’ to it. Clearing the  
corresponding bit in the PC104_IRQ register will bring GPIO17 level to logic ‘0’ and  
make the interrupt logic ready for the next PC104 interrupt. When one or more other  
PC104 IRQs are asserted while the driver is processing PC104 IRQ, the new PC/104  
IRQ source has to wait for the current IRQ to be processed. This situation is shown in  
the following diagram:  
Delay:  
250-375ns  
Driver processing IRQ4  
due to priority over IRQ6  
GPIO17  
Driver processing IRQ3  
Driver clears IRQ3 at source  
and in PC104_IRQ register  
PC104_IRQ3  
PC104_IRQ6  
PC104_IRQ4  
There is a delay of 250-375ns between the de-assertion of the GPIO17 IRQ signal and  
its new assertion due to the pending PC104 interrupt. This delay is introduced into the  
ZEUS hardware implementation to accommodate for the minimum inactive time of  
GPIO signals required by a PXA270 processor (154ns).  
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Detailed hardware description  
Unsupported PC/104 interface features  
The ZEUS does not support the following PC/104 bus features:  
•
•
•
PC/104 IRQ9, IRQ14 and IRQ15 are not available.  
DMA is not supported. Therefore, AEN signal is set to a constant logical zero.  
Bus mastering is not supported. Therefore, do not connect any other master add-  
on board to the ZEUS PC/104 interface.  
•
•
Shared interrupts are not supported. Do not connect more than one add-on board  
to the same interrupt signal line.  
BALE signal is set to a constant logical one as the address is valid over the entire  
bus cycle. Add-on PC/104 boards that implement transparent latch on address  
lines LA17-LA23 are compatible with the ZEUS implementation of BALE.  
•
•
The PXA270 PCMCIA memory controller does not support 8-bit memory read  
accesses for common memory space.  
The PXA270 PCMCIA memory controller does not support PC/104 MEMCS#  
signalling, so there is no support for dynamic bus sizing.  
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ZEUS Technical Manual  
Detailed hardware description  
Flat panel display  
The PXA270 processor contains an integrated LCD display controller. It is capable of  
supporting both colour and monochrome single- and dual-scan display modules. It  
supports active (TFT) and passive (STN) LCD displays up to 800x600 pixels.  
The PXA270 can drive displays with a resolution up to 800x600, but as the PXA270  
has a unified memory structure, the bandwidth to the application decreases  
significantly. If the application makes significant use of memory, such as when video is  
on screen, you may also experience FIFO under-runs causing the frame rates to drop  
or display image disruption. Reducing the frame rate to the slowest speed possible  
gives the maximum bandwidth to the application. The display quality for an 800x600  
resolution LCD is dependant on the compromises that can be made between the LCD  
refresh rate and the application. The PXA270 is optimized for a 640x480 display  
resolution.  
A full explanation of the graphics controller operation can be found in the Intel PXA27x  
Processor Family Developer’s Manual included on the Development Kit CD.  
The ZEUS-FPIF interface board allows the user to easily wire-up a panel using pin and  
crimp style connectors (see page 122). Contact Eurotech Sales (see page 97) for  
purchasing information. Alternatively, the display interface is connected to an LVDS  
interface (see the section LVDS interface, page 47). This may be useful when driving  
displays located more than 300mm (12") from the ZEUS.  
The following tables provide a cross-reference between the flat panel data signals and  
their function when configured for different displays.  
TFT panel data bit mapping to the ZEUS  
The PXA270 can directly interface to 18-bit displays, but from a performance  
point of view it is better to use 16-bit only. 18-bit operation requires twice the  
bandwidth of 16-bit operation.  
The following table shows TFT panel data bit mapping to the ZEUS:  
Panel data bus bit  
FPD 15  
FPD 14  
FPD 13  
FPD 12  
FPD 11  
GND  
18-bit TFT  
R5  
12-bit TFT  
9-bit TFT  
R3  
R2  
R1  
R0  
-
R2  
R1  
R0  
-
R4  
R3  
R2  
R1  
-
R0  
-
-
FPD 10  
FPD 9  
G5  
G3  
G2  
G1  
G2  
G1  
G0  
G4  
FPD 8  
G3  
continued…  
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Panel data bus bit  
18-bit TFT  
G2  
12-bit TFT  
9-bit TFT  
FPD 7  
FPD 6  
FPD 5  
FPD 4  
FPD 3  
FPD 2  
FPD 1  
FPD 0  
GND  
G0  
-
-
G1  
-
G0  
-
-
B5  
B3  
B2  
B1  
B0  
-
B2  
B1  
B0  
-
B4  
B3  
B2  
B1  
-
B0  
-
-
STN panel data bit mapping to the ZEUS  
Panel data bus bit Dual scan colour STN Single scan colour STN  
Dual scan mono STN  
FPD 15  
FPD 14  
FPD 13  
FPD 12  
FPD 11  
FPD 10  
FPD 9  
FPD 8  
FPD 7  
FPD 6  
FPD 5  
FPD 4  
FPD 3  
FPD 2  
FPD 1  
FPD 0  
DL7(G)  
DL6(R)  
DL5(B)  
DL4(G)  
DL3(R)  
DL2(B)  
DL1(G)  
DL0(R)  
DU7(G)  
DU6(R)  
DU5(B)  
DU4(G)  
DU3(R)  
DU2(B)  
DU1(G)  
DU0(R)  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
D7(G)  
D6(R)  
D5(B)  
D4(G)  
D3(R)  
D2(B)  
D1(G)  
D0(R)  
DL3  
DL2  
DL1  
DL0  
DU3  
DU2  
DU1  
DU0  
The table below explains the clock signals required for passive and active type  
displays:  
ZEUS  
Active display signal (TFT)  
Clock  
Passive display signal (STN)  
Pixel Clock  
PCLK  
LCLK  
FCLK  
BIAS  
Horizontal Sync  
Vertical Sync  
Line Clock  
Frame Clock  
Bias  
DE (Data Enable)  
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Detailed hardware description  
LCD logic and backlight power  
The display signals are +3.3V compatible. The ZEUS contains power control circuitry  
for the flat panel logic supply and backlight supply. The flat panel logic is supplied with  
a switched 3.3V (default) or 5V supply (for details see the section JP3 – LCD logic  
supply selection, page 94). The backlight is supplied with a switched 5V supply for the  
inverter.  
The power switches (TPS2033D) for flat panel logic and backlight have the current-  
limiting (1.5A) and thermal protection features which eliminates the need for the fuses.  
The PXA270 GPIO101 pin (LCDEN signal) controls the supply voltage to the LCD  
display.  
LCDEN  
(CPU_GPIO101)  
Selected LCD function  
LCD power off (default)  
LCD power On  
0
1
The PXA270 GPIO19 pin (BKLEN signal) controls the supply voltage to the backlight  
inverter:  
BKLEN  
(CPU_GPIO19)  
Selected backlight function  
BKLSAFE Power Off (Default)  
BKLSAFE 5V Power On  
0
1
The BKLEN signal is also routed to the connector J14. See the section J14 – LCD  
connector, page 85, for J14 pin assignment and connector details.  
Signals BKLEN and BKLSAFE are also routed to the connector J24. See the section  
J24 – Backlight power, page 92, for further details.  
Typically the power up sequence is as follows (please check the datasheet for the  
particular panel in use):  
1
2
3
Enable display power.  
Enable flat panel interface.  
Enable backlight.  
Power down is in reverse order.  
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Detailed hardware description  
LCD backlight brightness control  
GPIO16 of the PXA270 processor is used for backlight brightness control (signal  
PWM0 on the J14 connector). The control of the backlight brightness is dependent  
upon the type of backlight inverter used with the display. Some inverters have a ‘DIM’  
function, which uses a logic level to choose between two levels of intensity. If this is the  
case then GPIO16 (Alternative Function 0) is used to set this. Other inverters have an  
input suitable for a pulse-width modulated signal or analogue voltage control. In this  
case GPIO16 should be configured as PWM0 (Alternative Function 2).  
Signal PWM0 is also routed through a low-pass filter on the ZEUS to enable analogue  
voltage control of backlight brightness (signal BRT_CTRL on connector J24 – Backlight  
power - see page 92). The voltage range of BRT_CTRL is 0-2.5V.  
STN bias voltage  
The ZEUS provides a negative and a positive bias voltage for STN type displays  
(turned on by the PXA270 GPIO101 pin). The negative and positive bias voltages are  
factory set to -22V and +22V respectively. Pin connections for these can be found in  
the section J14 – LCD connector, page 85. Please contact Eurotech Technical Support  
(see page 97) for details of other bias voltages.  
Do not exceed 20mA load current.  
LVDS interface  
There is an optional Low-Voltage Differential Signalling (LVDS) interface available on  
the ZEUS. LVDS combines high data rates with low power consumption. The benefits  
of LVDS include low-voltage power supply compatibility, low noise generation, high  
noise rejection and robust transmission signals.  
The National Semiconductor transmitter DS90C363 is used to convert 16-bits of LCD  
data signals into three LVDS data streams. A phase-locked transmit clock is  
transmitted in parallel with the data streams over a fourth LVDS link. The LVDS signals  
are routed to the connector J16. For the connector details see the section J16 – LVDS  
connector, page 86.  
The LVDS transmitter is enabled using the signal LVDS_EN (GPIO21 on PXA270).  
Details are shown in the following table:  
LVDS_EN  
(CPU_GPIO 21)  
Selected LVDS function  
LVDS power down (default)  
LVDS enable  
0
1
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Detailed hardware description  
The LVDS transmitter can be programmed for rising edge strobe or falling edge strobe  
operation through a signal LVDS_FES# (Expander 2 – GPIO1, I2C address 0x22).  
Details are shown in the following table:  
LVDS_FES#  
(EXP2_GPIO1)  
Selected LVDS function  
Falling edge strobe  
0
1
Rising edge strobe (default)  
Connector J24 should be used to supply the power and brightness control for the  
backlight inverter when the LVDS interface is used. See the section J24 – Backlight  
power, page 92, for details.  
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Detailed hardware description  
Audio  
A Wolfson WM9712L AC’97 audio CODEC is used to support the audio features of the  
ZEUS. Audio inputs supported by the WM9712L are stereo line in and a mono  
microphone input.  
The WM9712L provides a stereo line out that is amplified by a National Semiconductor  
LM4880 250mW per channel power amplifier, suitable for driving an 8Ω load. The  
WM9712L AC’97 codec may be turned off if it is not required. See the section Audio  
power management, page 71, for details.  
Connection to the ZEUS audio features is via header J4.  
See the section J4 – Audio connector, page 79, for connector and mating connector  
details. The table below shows pin assignments:  
Frequency  
Function  
Pin Signal  
Signal levels (max)  
response (Hz)  
10 MIC input  
9
7
MIC voltage reference  
output  
Microphone  
1Vrms  
20 – 20k  
Audio ground reference.  
1
5
3
Line input left  
Line in  
Line input right  
1Vrms  
1Vrms  
20 – 20k  
20 – 20k  
20 – 20k  
Audio ground reference  
2
6
4
Line output left  
Line out  
Amp out  
Line output right  
Audio ground reference  
8
Amp output left  
1.79V peak  
1.26Vrms  
11 Amp output right  
12 Audio ground reference  
(8Ω load) 223mW  
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Touchscreen controller  
The ZEUS supports 4-wire and 5-wire analogue resistive touchscreens using the  
controller available within the Wolfson WM9712L audio CODEC. The touchscreen  
controller supports the following functions:  
•
•
•
•
X co-ordinate measurement.  
Y co-ordinate measurement.  
Pen down detection with programmable sensitivity.  
Touch pressure measurement (4-wire touchscreen only).  
The touchscreen can be used as a wake-up source for PXA270 from sleep mode.  
The touchscreen interface is broken out on the header J1. For details see J1 –  
Touchscreen connector, page 77.  
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USB  
There are two USB host interfaces on the ZEUS. These comply with the Universal  
Serial Bus Specification Rev. 1.1, supporting data transfer at full-speed (12Mbit/s) and  
low-speed (1.5Mbit/s).  
There are four signal lines associated with each USB channel: VBUS, DATA+, DATA-,  
GND. The USB host ports are connected to a dual USB connector, type A (J8).  
A USB power control switch controls the power and protects against short-circuit  
conditions. If the USB voltage is short-circuited, or more than 500mA is drawn from  
either supply, the switch turns the power supply off and automatically protects the  
device and board. The VBUS power supply is derived from the ZEUS +5V supply. To  
switch the VBUS1 and VBUS2 power on, use the PXA270 GPIO89 and GPIO22  
respectively (set them to logic ‘1’).  
USB port 2 can be configured as a client port internally within the PXA270 USB  
controller, and is connected to 5-pin header J10.  
For details of connector pinouts, see the sections J8 – USB connector, page 81, and  
J10 – USB client header, page 82.  
More information about the USB bus and the availability of particular USB peripherals  
can be found at www.usb.org.  
Host port 2 on J8 and client port on J10 can only be used one at a time.  
DO NOT connect both devices at the same time.  
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Ethernet  
The ZEUS SBC provides two 10/100-BaseTX interfaces with MAC and complies with  
both the IEEE802.3u 10/100-BaseTX and the IEEE 802.3x full-duplex flow control  
specifications.  
Two single 10/100-BaseTX Ethernet controllers, Davicom DM9000A, are used to  
implement Ethernet interfaces on ZEUS. DM9000A device provides an embedded PHY  
and MAC and connects to 10/100-BaseTX magnetics. DM9000A also supports AUTO-  
MDIX feature. Configuration data and MAC information are stored in an external serial  
EEPROM (93LC46).  
The DM9000A devices are connected to the PXA270 data bus (16-bit), and are  
memory mapped. Connection to the ZEUS Ethernet ports is via dual RJ45 connector,  
J6, with speed and link/activity status LEDs. For pin assignment and connector details,  
see J6 – Ethernet connector, page 80.  
The link/activity LED (yellow) is illuminated when a 10/100-BaseTX link is made, and  
when there is Tx/Rx activity. The speed LED (green) is illuminated when 100MB/s  
speed is selected.  
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Serial COM ports  
There are seven serial communications ports available on the ZEUS. Three are  
provided by the PXA270 and are used for the optional wireless modem, GPS and  
IEEE802.15.4 / ZigBee ports.  
There are four additional high-speed, 16550 compatible serial UARTs implemented by  
an EXAR ST16C554Q Quad UART device. Two of these channels (COM1, COM2) can  
be used as standard RS232 serial interfaces, COM3 can be configured as RS232 or  
RS485/422, and COM4 can be configured as RS422 or RS485. The table below  
provides a summary of the four additional serial ports.  
FIFO depth  
Port  
Address  
IRQ  
RX / TX Signals  
COM1 0x10000000 –  
0x1000000F  
GPIO9  
16/16  
16/16  
16/16  
RS232: Rx, Tx, CTS, RTS, RI,  
DSR, DCD, DTR  
COM2 0x10800000 –  
0x1080000F  
GPIO10  
GPIO12  
RS232: Rx, Tx, CTS, RTS, RI,  
DSR, DCD, DTR  
COM3 0x11000000 –  
0x1100000F  
RS232: Rx, Tx, CTS, RTS, RI,  
DSR, DCD, DTR  
or  
RS422/485: Rx, Tx  
COM4 0x11800010 –  
0x1180001F  
GPIO11  
16/16  
RS422/RS485: Rx, Tx  
COM1/2 – RS232 interface  
Supported on Channel A and B of the external Quad UART, the ports are buffered to  
RS232 levels with ±15kV ESD protection, and support full handshaking and modem  
control signals. The maximum baud rate is 921.6 Kbaud. COM1 and COM2 ports can  
be accessed using DB9 connectors J11 and J15, respectively. For pin assignment and  
connector details, see J11 – Serial port – COM1 on page 83 and J15 – Serial port –  
COM2 on page 86.  
A factory fit option configures COM1 as TTL Level signals to interface to certain  
specialized modems. Please contact Eurotech Technical Support (see page 97) for  
details.  
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COM3 – RS232/RS485/RS422 interface  
Supported on Channel C of the external Quad UART, COM3 port can be configured by  
software as RS232 or RS485/RS422.  
The port is buffered to RS232 (or RS485/RS422) levels with ±15kV ESD protection.  
RS232 interface supports full handshaking and modem control signals. The maximum  
baud rate on this channel is 921.6 Kbaud. COM3 RS232 interface is connected to the  
connector J19, and RS485/422 interface is connected to the connector J18. For pin  
assignment and connector details, see J18 – Serial port (RS485/422) – COM3 on page  
87 and J19 – Serial ports – COM3/4 on page 88.  
Three control outputs of I2C GPIO expander (I2C address 0x21) are used to select one  
of the operating modes RS232, RS485 or RS422. The selection is implemented by  
using two control signals (U3_RS232EN, U3_RS422EN) to enable/disable the associated  
transceivers. The control signal combinations are shown in the following table:  
U3_RS232EN U3_RS422EN  
(EXP1_GPIO 0) (EXP1_GPIO 1) Selected COM3 function  
1
0
0
X
0
1
RS232  
RS485 Full duplex  
RS422 Half duplex  
U3_RS232EN and U3_RS422EN are at logic ‘1’ upon  
reset.  
The control signal U3_TERM# is used to enable/disable the RS485/422 line  
termination and must be enabled if the ZEUS board is at the end of the network. The  
following table shows the usage of U3_TERM# signal:  
U3_TERM# (EXP1_GPIO 2)  
Termination resistors (120Ω)  
Connected  
0
1
Disconnected  
U3_TERM# is at logic ‘1’ upon reset.  
The RS485/422 driver (LTC2859) on ZEUS features a logic-selectable reduced slew  
mode that softens the driver output edges to control the high frequency EMI emissions  
from equipment and data cables. The reduced slew rate mode is entered by taking the  
SLO# pin low, where the data rate is limited to about 250kbps. Slew limiting also  
mitigates the adverse effects of imperfect transmission line termination caused by  
stubs or mismatched cables.  
U3_RS485_SLO# (EXP2_GPIO 5) Slew rate  
0
1
Reduced  
Normal  
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COM4 – RS422/485 interface  
Supported on Channel D of the external Quad UART, and buffered to RS422/485  
levels with ±15kV ESD protection, this channel provides support for RS422 or RS485  
(software selectable) interfaces. The maximum baud rate on this channel is 921.6  
Kbaud. COM4 port is connected to the connector J19.  
The GPIO15 pin of the I2C GPIO expander (I2C address 0x21) is used to select RS422  
or RS485 interface mode as shown in the following table:  
U4_RS485EN (EXP1_GPIO 15) Selected COM4 function  
0
1
RS422 Full duplex  
RS485 Half duplex  
U4_RS485EN is at logic ‘1’ upon reset.  
The GPIO16 pin of the I2C GPIO expander (I2C address 0x21) is used to  
enable/disable the RS485/422 line termination and must be enabled if the ZEUS board  
is at the end of the network. The following table shows the usage of U4_TERM# signal:  
U4_TERM# (EXP1_GPIO 16) Termination resistors (120Ω)  
0
1
Connected  
Disconnected  
U4_TERM# is at logic ‘1’ upon reset.  
The RS485/422 driver (LTC2859) on ZEUS features a logic-selectable reduced slew  
mode that softens the driver output edges to control the high frequency EMI emissions  
from equipment and data cables. The reduced slew rate mode is entered by taking the  
SLO# pin low, where the data rate is limited to about 250kbps. Slew limiting also  
mitigates the adverse effects of imperfect transmission line termination caused by  
stubs or mismatched cables.  
U4_RS485_SLO#  
(EXP2_GPIO 6)  
Slew rate  
Reduced  
Normal  
0
1
Further details about the RS422 and RS485 interfaces are provided below.  
RS422  
The RS422 interface provides full-duplex communication. The signals available are  
TX+, TX-, RX+, RX- and ground. The maximum cable length for an RS422 system is  
1200m (4000ft). It supports one transmitter and up to ten receivers.  
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RS485  
This is a half-duplex interface that provides combined TX and RX signals (TX+/RX+  
and TX-/RX-). A ground connection is also required for this interface. The maximum  
cable length for this interface is the same as RS422 - 1200m (4000ft), but RS485  
supports up to 32 transmitters and receivers on a single network. Only one transmitter  
should be switched on at a time. The ZEUS uses the RTS# signal to control  
transmission. When this signal is at logic 1, the driver is switched off and data can be  
received from other devices. When the RTS# line is at logic 0, the driver is on. Any  
data transmitted from the ZEUS is automatically echoed back to the receiver. This  
enables the serial communications software to recognize that all data has been sent,  
and disable the transmitter when required.  
Typical RS422 and RS485 connection  
RS422 POINT-TO-POINT  
RS422 MULTI-DROP  
RS485 MULTI-DROP  
Number of Wires  
Transmitters Enabled  
Receivers Enabled  
Duplex Mode  
5
always  
always  
full  
Number of Wires  
5
active RTS#  
always  
Number of Wires  
3
active RTS#  
always  
Transmitters Enabled  
Receivers Enabled  
Duplex Mode  
Transmitters Enabled  
Receivers Enabled  
Duplex Mode  
full  
half  
RS485EN  
LOW  
RS485EN  
LOW  
RS485EN  
HIGH  
Only set U3_TERM# (U4_TERM#) at logic low if the ZEUS is at the end of the  
network.  
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CAN bus  
A Microchip MCP2515 CAN 2.0B protocol compatible controller and MCP2551  
transceiver are used on the ZEUS to provide Controller Area Network (CAN) bus  
connectivity. CAN is a high-integrity serial data communications bus for real-time  
applications. It operates at data rates of up to 1 Mbit/s and has excellent error  
detection capabilities. A 16MHz clock is supplied to the CAN controller.  
The MCP2515 controller connects to the SPI serial interface of the PXA270 processor.  
A MCP2551 transceiver is opto-isolated from the rest of the circuit (3.75kV isolation  
voltage), but an external isolated 5V supply needs to be provided to supply the  
transceiver and the opto-isolators. Alternatively, non-isolated operation is available  
through a factory fit option. Contact Eurotech Technical Support (see page 97) for  
details.  
The CAN bus interface is broken out to the header J17. For connector details see the  
section J17 – CAN bus, page 87.  
Jumpers JP5, JP6 can be used to connect 62Ω termination resistors when the ZEUS is  
at the end of the network. Split termination concept is used on ZEUS (see figure  
below). For details see the section JP5 & JP6 – CAN bus termination, page 95.  
CAN_H  
JP5  
62 Ohm  
Split  
Termination  
C
62 Ohm  
CAN Transceiver  
JP6  
CAN_L  
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I²C bus  
The PXA270 I²C interface is brought out to the COMs connector J19. See the section  
J19 – Serial ports – COM3/4, page 88, for connection details.  
I²C bus is also used with the Quick Capture interface. See the section Quick Capture  
camera interface, page 59.  
The following table lists the on-board I²C devices:  
Device name  
I²C address  
0x20  
External General Purpose I/O  
On-board GPIO Expander 1  
On-board GPIO Expander 2  
Temperature Sensor (LM75A)  
RTC (Intersil ISL1208)  
Config EPROM  
0x21  
0x22  
0x48  
0x6F  
0x50-0x57  
The I²C unit supports a fast mode operation of 400KB/s and a standard mode of  
100KB/s.  
Fast-mode devices are downward compatible and can communicate with standard-  
mode devices in a 0 to 100KB/s I²C bus system. As standard-mode devices, however,  
are not upward compatible, they should not be incorporated in a fast-mode I²C bus  
system as they cannot follow the higher transfer rate and unpredictable states would  
occur.  
The I²C interface does not support the hardware general call, 10-bit addressing,  
high-speed mode (3.4Mbit/s) or CBUS compatibility.  
You should keep the total bus load below 200pF.  
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Quick Capture camera interface  
The Quick Capture camera interface is a component of Intel Quick Capture technology  
which provides a connection between the PXA270 processor and a camera image  
sensor. The Quick Capture interface is designed to work primarily with CMOS-type  
image sensors and supports up to 4 Megapixel resolution. However, it may be possible  
to connect some CCD-type image sensors to the PXA27x processor (PXA27x  
processor), depending on a specific CCD sensor’s interface requirements.  
The Quick Capture interface acquires data and control signals from the image sensor,  
and performs the appropriate data formatting prior to routing the data to memory, using  
direct memory access (DMA). A broad range of interface and signalling options  
provides direct connection. The image sensor can provide raw data through a variety  
of parallel and serial formats. For sensors that provide pre-processing capabilities, the  
Quick Capture interface supports several formats for RGB and YCbCr colour space.  
The Quick Capture interface signals are connected to the header J9. The I2C interface  
is available on the same header since most of the camera image sensors require an  
I2C control interface. For I2C bus address map on the ZEUS, see the section I²C bus  
on the previous page. For connector details, see the section J9 – Camera interface  
connector, page 82.  
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External General purpose I/O  
A Maxim MAX7313 I²C I/O Expander provides sixteen general purpose input/output  
lines on the header J7. Each I/O port can be individually configured as either an open-  
drain current-sinking output rated at 50mA with10K pull-up to 5V, or a logic input with  
transition detection. The I/O Expander inputs are 5V tolerant.  
The I/O Expander is addressable at I²C serial bus address 0x20 and is accessed in  
fast-mode operation at 400 kbps. On power-up all control registers are reset and the  
MAX7313 enters standby mode. Power-up status makes all ports into inputs, so the  
state of all 17 ports (P0-P16) is logic high (through 10K pull-up to 5V).  
See the section J7 – GPIO connector, page 81, for connector pinout and mating  
connector details. The signals on J7 correspond to the pin names of the MAX7313  
(P0-P15).  
+5V  
10K  
P(0-15)  
I2C  
P16  
PXA270  
MAX7313  
J7  
Port 16 of the MAX7313 is configured as an interrupt, so that any I/O Expander GPIO  
pin configured as an input can cause the PXA270 to be interrupted on GPIO1. These  
can also be used as PXA270 wake-up sources from sleep mode.  
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Temperature sensor  
There is a Philips LM75A temperature sensor on the ZEUS. The LM75A is a  
temperature-to-digital converter using an on-chip band-gap temperature sensor and  
sigma-delta A-to-D conversion technique. The device is also a thermal detector  
providing an over-temperature detection output (OVERTEMP signal on GPIO96 of  
PXA270). The accuracy of LM75A is ±2 °C (at -25 °C to 100 °C), and ±3 °C (at -55 °C  
to 125 °C). LM75A is connected to the I2C bus of PXA270 processor, and is accessible  
at I2C bus address 0x48.  
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JTAG and debug access  
Debug access to the PXA270 processor is via the JTAG connector J5. A standard ARM  
20-pin header is used for the JTAG interface. See J5 – JTAG connector, page 79, for  
details.  
Jumper JP7 needs to be inserted to enable the JTAG interface for PXA270 debug. See  
section JP7 - JTAG Enable, page 95 for details.  
The Macraigor Wiggler (see www.macraigor.com/wiggler.htm) and usb2Sprite (see  
www.macraigor.com/usb2sprite.htm) probes have been used to debug the PXA270  
processor on the ZEUS. There are many other debug tools that can be interfaced to  
the ZEUS for access to the JTAG Interface of the PXA270 processor.  
In addition to the PXA270, there are two CPLDs (XC9536XL-CS48 and  
XC9572XL-CS48) in the JTAG chain on the ZEUS. The BSDL files can be  
found on the www.xilinx.com web site.  
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Power and power management  
Power and power management  
Power supplies  
The ZEUS is designed to operate from a single +5V±5% (4.75V to +5.25V) input or the  
onboard 10V to 30V DC/DC PSU.  
DC input voltage (10-30V)  
DC input voltage (10-30V) is connected through a front panel locking DC jack J3 (see  
the section J3 – Power connector (10-30V), page 78). When operating from the 10 to  
30V input, the 5V connector (J2) is NOT fitted. The input rails are protected from  
overcurrent, overvoltage, undervoltage and reverse battery conditions, and include  
transient suppression to achieve compatibility with vehicle power supplies. The on-  
board DC/DC converter can provide a maximum current of 5A at 5V at a temperature  
range of 0-70°C (32-158°F).  
For vehicle-based applications, the supervisory circuit monitors the auxiliary ignition  
supply input (Vig), and provides feedback of ignition status to the PXA270 (IG_FAIL  
signal at GPIO115). If the Vig falls below 9.2V, IG_FAIL becomes logic ‘1’. This can be  
used to instigate an orderly shutdown or to store ignition status data.  
5V only operation  
For 5V only operation, the ATX style connector J2 is used as the main power input for  
the ZEUS. In this case, connector J3 and the entire DC/DC PSU circuit is depopulated.  
The power connector J2 has a +12V connection too, but it is not required for the ZEUS  
under normal operation. It can be used to supply +12V to the PC/104 stack if required.  
For details of the 5V power connector see the section J2 – Power connector (5V  
option), page 78. Contact Eurotech Sales (see page 97) for details.  
If a CompactFlash and an LCD display are used, ensure the total current  
requirement on the 3.3V rail does not exceed 900mA. Please check the  
datasheets of the devices you are using.  
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Power and power management  
On-board supplies  
There are seven on-board supply voltages derived from the +5V supply. They are listed  
in the following table:  
Supply rail  
Power domains  
Voltage  
Reset threshold  
VCC_BATT  
PXA270 Sleep-control subsystem,  
oscillators and real time clock  
3.3V or 3.0V  
2.25V  
VCC_CORE PXA270 core and other internal units  
0.85V-1.55V  
91% of  
nominal  
VCC_PLL  
PXA270 Phase-locked loops  
1.3V  
1.1V  
3.3V  
1.18V  
1V  
VCC_SRAM PXA270 Internal SRAM units  
+3V3  
PXA270 I/O, PXA270 internal units,  
on-board 3.3V peripherals  
3.05V  
VCC_PER  
PC/104, Audio Amp, CAN Bus  
transceiver, External GPIO pull-ups  
5V  
5V  
4.63V  
(PC/104 only)  
VCC_MODEM Zeus Modem  
NA  
Reset will be generated if the supplies fall below the thresholds shown in the table.  
VCC_CORE, VCC_PLL and VCC_SRAM rails are controlled by PWR_EN signal of the  
PXA270. They are switched off when PXA270 is in sleep or deep-sleep mode.  
VCC_PER, VCC_MODEM and +3V3 supply rails are controlled by SYS_EN signal of  
the PXA270. They are switched off when PXA270 is in deep-sleep mode.  
VCC_PER rail is also monitored, and reset will be generated to the PC/104 interface if  
the voltage falls below 4.63V. This can also generate an interrupt on pin GPIO20 of the  
PXA270.  
Power management IC  
The Linear Technology device LTC3445 is used to provide the power supply for the  
PXA270. It is specifically designed for the PXA27x family of microprocessors.  
The LTC3445 contains a high efficiency buck regulator (VCC_CORE), two LDO  
regulators (VCC_PLL, VCC_SRAM), a PowerPath controller and an I2C interface. The  
buck regulator has a 6-bit programmable output range of 0.85V to 1.55V. The buck  
regulator uses either a constant frequency of 1.5MHz, or a spread spectrum switching  
frequency. Using the spread spectrum option gives a lower noise regulated output, as  
well as low noise at the input. In addition, the regulated output voltage slew rate is  
programmable via the Power Management I2C interface of the PXA270.  
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Power and power management  
Battery backup  
An on-board non-rechargeable coin cell battery (CR2032) provides a 3V battery  
backup supply for the ISL1208 RTC, external SRAM and the supply supervisor, when  
there is no +5V supply to the board. The ZEUS is normally shipped with battery  
disconnected. See JP2 – Battery disconnect, page 93, for details.  
The table below shows the typical and maximum current load on the backup battery:  
Device load on battery  
SRAM  
Typical (µA)  
Maximum (µA)  
0.3  
0.4  
0.5  
1.2  
3
ISL1208 RTC (with Clock Out Off)  
Supply Supervisor  
Total  
0.95  
0.5  
1.45  
An onboard Schottky diode drops 13mV from VBAT at +25°C (+77°F). At -40°C  
(-40°F) this may increase to 170mV and at +85°C (+185°F) it may decrease  
below 10mV. The SRAM and ISL1208 minimum voltages are 1.5V and 1.8V  
respectively. Reliable operation below these minimum voltages cannot be  
guaranteed.  
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Processor power management  
First available in the PXA270 processor, Wireless Intel SpeedStep Technology  
dynamically adjusts the power and performance of the processor based on CPU  
demand. This can result in a significant decrease in power consumption.  
In addition to the capabilities of Intel Dynamic Voltage Management, the Intel XScale  
micro architecture of the PXA27x family incorporates three new low power states.  
These are deep idle, standby and deep sleep. It is possible to change both voltage and  
frequency on the fly by intelligently switching the processor into the various low power  
modes. This saves additional power while still providing the necessary performance to  
run rich applications.  
Wireless Intel SpeedStep technology includes the following features:  
•
•
Five reset sources: power-on, hardware, watchdog, GPIO and exit from sleep and  
deep-sleep modes (sleep-exit).  
Multiple clock-speed controls to adjust frequency, including frequency change,  
turbo mode, half-turbo mode, fast-bus mode, memory clock, 13M mode, A-bit mode  
and AC ’97.  
•
•
•
•
Switchable clock source.  
Functional-unit clock gating.  
Programmable frequency-change capability.  
One normal-operation power mode (run mode) and five low power modes to control  
power consumption (idle, deep-idle, standby, sleep and deep-sleep modes).  
•
Programmable I2C-based external regulator interface to support changing dynamic  
core voltage, frequency change and power mode coupling.  
The PXA270 power consumption depends on the operating voltage and frequency,  
peripherals enabled, external switching activity, external loading and other factors. The  
tables below contain power consumption information at room temperature for several  
operating modes: active, idle and low power. For active power consumption data, no  
PXA270 peripherals are enabled except for on-chip UARTs.  
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Conditions  
Active power Idle power  
consumption consumption  
VCC_SRAM = 1.1V; VCC_PLL = 1.3V;  
VCC_MEM, VCC_BB,  
System bus  
Frequency frequency  
VCC_USIM, VCC_LCD = 1.8V;  
VCC_IO, VCC_BATT,VCC_USB=3.0V  
typ.  
typ.  
520MHz  
416MHz  
312MHz  
312MHz  
208MHz  
104MHz  
13MHz  
208MHz  
747 mW  
570 mW  
390 mW  
375 mW  
279 mW  
116 mW  
44.2 mW  
222 mW  
186 mW  
154 mW  
109 mW  
129 mW  
64 mW  
-
VCC_CORE = 1.45V  
VCC_CORE = 1.35V  
VCC_CORE = 1.25V  
VCC_CORE = 1.1V  
VCC_CORE = 1.15V  
VCC_CORE = 0.9V  
VCC_CORE = 0.85V  
208MHz  
208MHz  
104MHz  
208MHz  
104MHz  
CCCR[CPDIS]=1  
Conditions  
VCC_MEM, VCC_BB, VCC_USIM, VCC_LCD = 1.8V  
VCC_IO, VCC_BATT, VCC_USB= 3.0V  
Power consumption  
typ.  
PXA270 low power modes  
13MHz idle mode (LCD on)  
13MHz idle mode (LCD off)  
Deep sleep mode  
15.4mW  
8.5mW  
0.1mW  
0.16mW  
1.7mW  
VCC_CORE, VCC_SRAM, VCC_PLL = 0.85V  
VCC_CORE, VCC_SRAM, VCC_PLL = 0.85V  
VCC_CORE, VCC_SRAM, VCC_PLL = 0V  
VCC_CORE, VCC_SRAM, VCC_PLL = 0V  
VCC_CORE, VCC_SRAM, VCC_PLL = 3.0V  
Sleep mode  
Standby mode  
Wake-up sources  
The PXA270 offers two sleep modes:  
•
Sleep mode offers lower power consumption by switching off most internal units.  
There is no activity inside the processor, except for the units programmed to retain  
their state in the PSLR register, the real time clock and the clocks and power  
manager. Because internal activity has stopped, recovery from sleep mode must  
occur through an external or internal real time clock event. External wake-up  
sources are GPIO<n> edge detects (they are listed in the section PXA270 GPIO  
pin assignments, page 22).  
•
Deep-sleep mode offers the lowest power consumption by powering most units off.  
There is no activity inside the processor, except for the real time clock (RTC) and  
the clocks and power manager. Because internal activity has stopped, recovery  
from deep-sleep mode must be through an external event or an RTC event. In  
deep-sleep mode, all the PXA270 power supplies (VCC_CORE, VCC_SRAM,  
VCC_PLL, VCC_IO excluding VCC_BATT) are powered off for minimized power  
consumption. On the ZEUS, the main +3.3V rail supplies the VCC_IO power domain  
of the PXA270. Since the +3.3V supply is switched off in deep-sleep mode, all the on-  
board peripherals are powered off and it is not possible to use external wake-up  
sources. In this situation, recovery from deep-sleep mode must be through an  
internal RTC event.  
For more information on PXA270 power management, see section 3.6 in the Intel  
PXA27x Processor Family Developer’s Manual, included on the Development Kit CD.  
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Power and power management  
Peripheral devices power management  
The following table gives the estimated power consumption of on-board peripherals:  
Low power mode  
On-board  
peripheral  
Maximum power  
consumption  
Minimum consumption  
Operating mode  
Quad UART  
66mW ([email protected])  
10mW ([email protected])  
Idle  
Ethernet 2x  
DM9000A  
607mW ([email protected])  
46mW ([email protected])  
Power-down  
CAN MCP2515 50mW (10mA@5V)  
CAN transceiver 375mW (75mA@5V)  
0.025mW (5uA@5V)  
1.8mW (200uA@5V)  
0.001mW  
Sleep  
Standby  
OFF  
AC’97 Codec  
WM9712L  
80mW  
Boomer Amp  
LM4880  
30mW (6mA@5V)  
0.025mW (5uA@5V)  
Shut-down  
SDRAM x4  
Flash  
2640mW ([email protected]) 26.4mW ([email protected]) Power-down  
165mW ([email protected])  
72mW ([email protected])  
6.6mW ([email protected])  
66mW ([email protected])  
0.015mW ([email protected])  
0.001mW ([email protected])  
5mW ([email protected])  
20mW ([email protected])  
0.17mW (55uA@3V)  
0.02mW ([email protected])  
0.012mW ([email protected])  
Standby  
Standby  
Disable  
Idle  
SRAM  
RS485  
CPLD x2  
LVDS transceiver 165mW ([email protected])  
I/O expander x2 1.6mW ([email protected])  
Power-down  
Idle  
RTC  
0.4mW ([email protected])  
3.3mW ([email protected])  
Idle  
Temperature  
sensor  
0.010mW ([email protected]) Shut-down  
Config PROM  
3.3mW ([email protected])  
0.003mW ([email protected])  
Standby  
Total  
4.5W  
102mW  
External peripheral devices include CF+ card (1.5W max), two USB devices (5W max),  
add-on PC/104 cards (5W max), wireless modem (8.5W peak), LCD and Inverter (4W  
max), GPS module (50mW max), ZigBee module (30mW max), SDIO (350mW max)  
and Quick Capture camera (50mW max).  
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Power and power management  
The table below gives examples of power drawn by specific external peripheral  
devices:  
Device  
Part number  
Condition  
Power (mW)  
64MB Sandisk  
CompactFlash  
SDCFJ-64  
Sleep  
1
Writing consistently  
220  
Socket WiFi 802.11b  
SDIO  
WL6200-480  
FDU100A  
Idle (listening)  
Transmitting  
50  
925  
64MB FlashDio USB  
memory stick  
Inserted (no access)  
Reading consistently  
375  
605  
NEC 5.5" LCD +  
Inverter  
NL3224BC35-20  
+ 55PW131  
LCD and backlight on  
3250  
825  
LCD on and backlight off  
GSM/GPRS module  
GPS module  
Siemens MC39i  
Data mode GPRS 900  
Power down mode  
2100  
0.18  
Fastrax iTRAX03/08 Continuous mode  
Sleep mode  
100  
0.06  
ZigBee module  
Eurotech ZM1  
Dialog DA3520  
Rx  
25  
Power down  
0.1  
VGA CMOS sensor  
module  
Active  
50  
When PXA270 is placed in deep-sleep mode, the power to all the peripherals  
(on-board and external) is switched off by SYS_EN signal of the PXA270.  
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Power and power management  
CompactFlash power management  
The power supply to the CompactFlash interface is controlled via software, and  
supports hot swap card insertion and CompactFlash power down states. GPIO97 on  
the PXA270 (signal CF_PWEN) is used to control the power supply switch. Setting this  
line to logic ‘0’ switches off the power to the CompactFlash interface. The current-  
limiting (1A) and thermal protection features of the power switch eliminate the need for  
the fuse. The power supply to the CompactFlash is derived from 3.3V supply.  
CPU_ GPIO97 (CF_PWEN)  
CF power  
0
1
Power off  
Power on  
Wireless modem power management  
The power supply to the wireless modem interface (VCC_MODEM) is controlled by  
SYS_EN signal of the PXA270, and is switched off when PXA270 is in deep-sleep  
mode. The current-limiting (2A) and thermal protection features of the power switch  
eliminate the need for the fuse. VCC_MODEM power supply is derived from the ZEUS  
+5V supply.  
GSM_ON and GPS_ON control signals are provided on the ZEUS Modem connector  
(J23). They are controlled by on-board GPIO expander (see On-Board GPIO  
expanders pin assignments, page 29). For details on how to use these signals, and  
other power management features of the specific wireless and GPS devices, please  
consult the datasheet of the device used.  
USB power management  
A USB power control switch controls the power, and protects against short-circuit and  
over-current conditions, on USB host ports.  
If the USB voltage VBUSx is short-circuited, or more than 500mA is drawn from any  
VBUSx supply, the switch turns off the power supply and protects the device and board  
automatically. The VBUSx power supplies are derived from the ZEUS +5V supply.  
The following table shows the PXA270 assignments for power enable and over-current  
signals:  
Host 1/2 functions PXA270 GPIO  
Active  
High  
Low  
USB_PWE1  
USB_OC1#  
USB_PWE2  
USB_OC2#  
GPIO89  
GPIO88  
GPIO22  
GPIO114  
High  
Low  
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Power and power management  
Ethernet power management  
The Ethernet controllers (Davicom DM9000A) incorporate a number of features to  
maintain the lowest power consumption.  
The device can be put into a power-reduced mode by setting the PHY control register  
bit 16.4. In power-reduced mode, the device transmits the fast link pulses with  
minimum power consumption. It also monitors the media for the presence of a valid  
signal and, if detected, the device automatically wakes up and resumes normal  
operation. The power consumption in power-reduced mode (without the cable) is  
31mA.  
The PHY can be put into a sleep mode by setting the PHY control register bit 16.1,  
which powers down all the circuits except the oscillator and clock generator circuit.  
The PHY can be put into a power-down mode by setting the PHY control register bit  
0.11, which disables all transmit and receive functions but not access to PHY registers.  
The power consumption in power-down mode is 63mW. The system clock can be  
turned off, by using the SCCR register (bit 0) of DM9000A, to further reduce the power  
consumption to 22mW.  
For more information about power management, refer to the DM9000A datasheet on  
the Development Kit CD.  
Audio power management  
The audio CODEC (Wolfson WM9712L) supports the standard power down control  
register defined by AC’97 standard (26h). In addition, the individual sections of the chip  
can be powered down through register 24h. Significant power savings can be achieved  
by disabling parts of WM9712L that are not used.  
Shutting down all the clocks and digital and analogue sections can reduce WM9712L  
consumption down to near zero (1.65μW).  
For more information about power management, refer to the WM9712L datasheet on  
the Development Kit CD.  
LVDS power management  
If not used, the DS90C363 LVDS transmitter can be placed in power down mode by  
applying a low-level to GPIO21 of PXA270 (signal LVDS_EN). The power consumption  
in power down mode is 180μW.  
CPU_ GPIO21 (LVDS_EN)  
LVDS operation status  
0
1
Power down mode  
Normal operation  
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CAN bus power management  
The Microchip MCP2515 CAN bus controller has an internal sleep mode that is used to  
minimize the current consumption of the device. The SPI interface remains active for  
reading even when the MCP2515 is in sleep mode, allowing access to all registers. To  
enter sleep mode, the mode request bits are set in the CANCTRL register  
(REQOP<2:0>).  
When in internal sleep mode, the wake-up interrupt is still active (if enabled) which  
means that upon detecting activity on the bus, it can be used as a wake-up source for  
PXA270. When in sleep mode, the MCP2515 stops its internal oscillator. The  
MCP2515 will wake up when bus activity occurs, or when the PXA270 sets the  
CANINTF.WAKIF bit to ‘generate’ a wake-up attempt, via the SPI interface. The power  
consumption in sleep mode is near zero (15μW).  
The transceiver device (MCP2551) may be placed in sleep mode by applying a high-  
level to GPIO2 of Expander 2 (I2C address 0x22, signal CAN_SHDN). In sleep mode,  
the transmitter is switched off and the receiver operates at a lower current. The receive  
pin on the controller side (RXD) is still functional but will operate at a slower rate. The  
power consumption in sleep mode is 1.8mW.  
EXP2_GPIO2 (CAN_SHDN)  
MCP2551 operation status  
0
1
Normal operation  
Sleep mode  
For more information about power management, refer to the MCP2515 and MCP2551  
datasheets contained on the Development Kit CD.  
Clock generator power management  
Two clock synthesizer IC’s (Cypress CY22381) can be placed in low power mode by  
shutting down the clock outputs in case the corresponding interfaces are not used. You  
can do this by applying a low-level to the GPIO0 pin on the Expander 2 (I2C address  
0x22, signal CLK_SHDOWN#). The following clocks are affected:  
•
•
•
•
•
ST16C554Q UART 14.7456MHz clock.  
Ethernet PHY 25MHz clock.  
PC/104 8MHz and 14MHz clocks.  
CAN bus 16MHz clock.  
Audio clock 24.576MHz.  
This can reduce the power consumption of each clock generator IC down to 66 μW.  
EXP2_GPIO0 (CLK_SHDOWN#) Clock operation status  
0
1
Shutdown mode  
Normal operation  
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COM Ports power management  
RS232 transceivers can be placed in low power mode in case they are not used. This  
can reduce the power consumption of each RS232 transceiver down to 33 μW. GPIO  
pins 3 and 4 of Expander 2 (I2C address 0x22) are used to shut down COM1 and  
COM2. GPIO pin 1 of Expander 1 (I2C address 0x21) is used to shut down COM3.  
EXP2_GPIO3 (U1_RS232_SHDN#) COM1 RS232 operation status  
0
1
Shutdown mode  
Normal operation  
EXP2_GPIO4 (U2_RS232_SHDN#) COM2 RS232 operation status  
0
1
Shutdown mode  
Normal operation  
EXP1_GPIO1 (U3_RS232_EN)  
COM3 RS232 operation status  
0
RS232 Shutdown mode  
(RS422/485 enabled)  
1
Normal operation  
Temperature sensor power management  
The LM75A device can be set to operate in two modes: normal or shut-down. In  
normal operating mode, the temp-to-digital conversion is executed every 100ms and  
the Temp register is updated at the end of each conversion. In shut-down mode, the  
device becomes idle, data conversion is disabled and the Temp register holds the  
latest result. However, the device I2C interface is still active and register write/ read  
operation can be performed. The device operating mode is controllable by  
programming bit B0 of the configuration register. The temperature conversion is  
initiated when the device is powered-up or put back into normal mode from shut-down.  
The power consumption in shut-down mode is near zero (11.5μW).  
For more information about power management, refer to the LM75A datasheet on the  
Development Kit CD.  
I/O expander power management  
When the serial I2C interface is idle and the PWM intensity control is unused, the  
MAX7313 automatically enters standby mode. If the PWM intensity control is used, the  
operating current is slightly higher because the internal PWM oscillator is running. The  
power consumption in standby mode (with PWM disabled) is near zero (4μW).  
Configuration PROM power management  
When the serial I2C interface is idle the 24AA01 automatically enters standby mode.  
The power consumption in standby mode is near zero (3.3μW).  
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Connectors, LEDs and jumpers  
Connectors, LEDs and jumpers  
The following diagram shows the location of the connectors, LEDs and jumpers on the  
ZEUS:  
J4  
J7 JP2  
JP3 J9 J24  
J14  
JP4  
J1  
J2  
J16  
JP5&JP6  
J17  
J5  
J18  
J19  
JP1  
J3  
D3  
J6  
J8 J10 J11 J12&13 D10  
J15  
J3  
D3  
J6  
J8  
J11  
J15  
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J21  
J22  
J20  
J23  
The connectors on the following pages are shown in the same orientation as  
the pictures above, unless otherwise stated.  
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Connectors  
There are 24 connectors on the ZEUS for accessing external devices:  
Connector Function Connector details in section…  
J1 – Touchscreen connector, page 77  
J1  
J2  
J3  
Touchscreen controller  
Power (5V DC)  
J2 – Power connector (5V option), page 78  
J3 – Power connector (10-30V), page 78  
Power (10-30V DC)  
(Please note that J3 is not fitted when J2 is  
fitted. See the sections J2 – Power connector  
(5V option), page 78, and J3 – Power connector  
(10-30V), page 78, for details.)  
J4  
Audio  
J4 – Audio connector, page 79  
J5 – JTAG , page 79  
J5  
JTAG  
J6  
10/100BaseTX Ethernet  
GPIO  
J6 – Ethernet connector, page 80  
J7 – GPIO , page 81  
J7  
J8  
Dual USB host  
Camera interface  
USB client  
J8 – USB , page 81  
J9  
J9 – Camera interface connector, page 82  
J10 – USB client header, page 82  
J11 – Serial port – COM1, page 83  
J10  
J11  
J12  
J13  
J14  
J15  
J16  
J17  
J18  
Serial port – COM1  
64-way PC/104 expansion J12 & J13 – PC/104 , page 84  
40-way PC/104 expansion J12 & J13 – PC/104 , page 84  
LCD panel interface  
Serial port – COM2  
J14 – LCD , page 85  
J15 – Serial port – COM2, page 86  
LCD panel LVDS interface J16 – LVDS , page 86  
CAN bus  
J17 – CAN bus, page 87  
Serial port (RS422/485)  
J18 – Serial port (RS485/422), page 87  
continued…  
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Connector Function  
Connector details in section…  
J19 – Serial ports – COM3/4, page 88  
J20 – CompactFlash , page 89  
J19  
J20  
J21  
Serial ports (COM3/4)  
CF+ interface  
IEEE802.15.4 / ZigBee  
J21 – IEEE802.15.4 / ZigBee connector, page  
90  
J22  
J23  
SDIO  
J22 – SDIO socket, page 90  
J23 – Wireless modem/GPS module interface,  
page 91  
Wireless interface  
J24  
Backlight power  
J24 – Backlight power, page 92  
J1 – Touchscreen connector  
Connector: Neltron 2417SJ-5-F4, 5-way, 2mm (0.079") pitch wire-to-board header  
Mating connector: Molex 87369-0500 2mm (0.079") pitch crimp housing  
Mating crimps: Molex 50212  
Pin  
1
Signal name  
TSRY+/TR  
TSRY-/BL  
TSRX+/BR  
TSRX-/TL  
TSW  
5
2
3
4
1
5
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J2 – Power connector (5V option)  
Connector: Neltron 5566S-08, 8-way, 4.2mm (0.165") pitch mini fit header  
Mating connector: Molex 39-01-2085, 8-way, 4.20mm (0.165") pitch mini-fit, receptacle  
housing  
Mating crimps: Molex 44476-1112  
Pin Signal name  
Pin Signal name  
5
8
1
4
1
2
3
4
GND  
GND  
GND  
+12V  
5
6
7
8
+5V  
+5V  
+5V  
NC  
+12V connection is defined, but is not required for the ZEUS under normal  
operation. It can be used to supply +12V to the PC/104 stack if required.  
J3 is not fitted when J2 is fitted.  
J3 – Power connector (10-30V)  
Connector: Kycon KPJX-4S-S, 4-way DC power socket  
Mating connector: Kycon KPPX-4P plug  
Pin Signal name  
1
2
3
4
PWR_IN  
IGNITION  
GND_IN  
GND_IN  
2
4
1
3
As viewed from the front panel  
J2 is not fitted when J3 is fitted.  
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J4 – Audio connector  
Connector: Neltron 2417SJ-12-PHD, 12-way, 2mm header  
Mating connector: JST PHDR-12VS  
Mating crimps: JST SPHD-002T-P0.5  
Pin Signal name  
Pin Signal name  
1
LEFT IN  
GND  
2
4
6
8
LEFT OUT  
GND  
3
1
11  
12  
5
RIGHT IN  
GND  
RIGHT OUT  
AMP LEFT OUT  
7
2
9
MIC VREF OUT  
10 MIC IN  
11  
AMP RIGHT OUT 12 GND  
J5 – JTAG connector  
Connector: Oupiin 2015-2x10-G-D W/ROHS, 20-way, 2.54mm (0.1") header  
Mating connector: FCC 71600-020LF  
Pin Signal name  
Pin Signal name  
1
3
5
7
9
+3V3  
TRST#  
TDI  
2
4
6
8
NC  
GND  
GND  
GND  
19  
20  
TMS  
TCLK  
10 GND  
12 GND  
14 GND  
16 GND  
18 GND  
20 GND  
11 NC  
13 TDO  
15 SRST#  
17 NC  
2
1
19 NC  
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J6 – Ethernet connector  
Connector: Dual RJ45 shielded with LEDs, Xmultiple XRJM-S-02-8-8-1  
Pin Signal name  
Pin Signal name  
1A TX0+  
2A TX0-  
3A RX0+  
4A N.C.  
5A N.C.  
6A RX0-  
7A N.C.  
8A N.C.  
1B TX1+  
2B TX1-  
3B RX1+  
4B N.C.  
5B N.C.  
6B RX1-  
7B N.C.  
8B N.C.  
LINK/ACT  
ETH1  
100  
ETH0  
8A  
1A 8B  
1B  
9A LED0_SPEED# 9B LED1_SPEED#  
As viewed from the front panel  
10A +3V3  
10B +3V3  
11A LED0_LINK#  
12A +3V3  
11B LED1_LINK#  
12B +3V3  
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J7 – GPIO connector  
Connector: Molex 87832-2020, 20-way, 2mm (0.079") header  
Mating connector: Molex 51110-2051, 2mm (0.079") pitch, milli-grid crimp housing  
Mating crimps: Molex 50394  
Pin Signal name  
Pin Signal name  
1
3
5
7
9
+5V  
P0  
P2  
P4  
P6  
2
+5V  
P1  
4
6
P3  
1
19  
20  
8
P5  
10  
12  
14  
16  
18  
20  
P7  
11 GND  
13 P8  
GND  
P9  
2
15 P10  
17 P12  
19 P14  
P11  
P13  
P15  
J8 – USB connector  
Connector: USB type A dual stacked connector  
PORT 2  
5
6
7
8
Pin Signal name Pin Signal name  
1
2
3
4
VBUS1  
D1-  
5
6
7
8
VBUS2  
D2-  
1
2
3
4
D1+  
D2+  
PORT 1  
GND  
GND  
As viewed from the front panel  
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J9 – Camera interface connector  
Connector: Neltron 2417RJ-20-PHD 'LEAD FREE', 20-way, 2mm (0.079") header  
Mating connector: JST PHDR-20VS  
Mating crimps: JST SPHD-002T-P0.5  
Pin Signal name  
Pin Signal name  
1
+3V3  
2
+2V8  
3
CIF_MCLK  
CIF_LV  
4
CIF_PCLK  
CIF_FV  
CIF_DD1  
CIF_DD3  
CIF_DD5  
CIF_DD7  
I2C_SDA  
CIF_DD9  
GND  
5
6
1
2
19  
7
CIF_DD0  
CIF_DD2  
CIF_DD4  
8
9
10  
12  
14  
16  
18  
20  
20  
11  
As viewed from the connector pins  
13 CIF_DD6  
15 I2C_SCL  
17 CIF_DD8  
19 GND  
J10 – USB client header  
Connector: Oupiin 2011-1x5-G-S W/ROHS, 2.54mm (0.1") header  
Mating connector: Molex 22-01-2055 2.54mm (0.1") pitch crimp terminal housing  
Mating crimps: Molex 4809  
Pin Signal name  
1
2
3
4
5
NC  
D2-  
D2+  
GND  
GND  
5
1
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Connectors, LEDs and jumpers  
J11 – Serial port – COM1  
Connector: 9-pin D-type Plug male type  
Pin Signal name  
1
2
3
4
5
6
7
8
9
DCD1  
RX1  
TX1  
1
5
DTR1  
GND  
DSR1  
RTS1  
CTS1  
RI1  
6
9
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Connectors, LEDs and jumpers  
J12 & J13 – PC/104 connectors  
Connector:  
•
•
Samtec ESQ-132-12-G-D, 64-way, 2.54mm (0.1") PC/104 compatible connector  
(row A & B)  
Samtec ESQ-120-14-G-D, 40-way, 2.54mm (0.1") PC/104 compatible connector  
(row C & D)  
J13  
J12  
Row B  
IOCHCK# GND  
Pin Row D  
Row C  
Pin Row A  
1
2
3
4
5
6
7
8
9
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
RSTDRV  
+5V  
IRQ9  
NC  
NU (DRQ2)  
NC  
NC  
+12V  
0
GND  
GND  
1
2
3
4
5
6
7
8
9
MEMCS16# SBHE#  
10 IOCHRDY KEY  
IOCS16#  
IRQ10  
IRQ11  
IRQ12  
IRQ15  
IRQ14  
LA23  
LA22  
LA21  
LA20  
LA19  
LA18  
11 AEN  
12 A19  
13 A18  
14 A17  
15 A16  
16 A15  
17 A14  
18 A13  
SMEMW#  
SMEMR#  
IOW#  
IOR#  
NU (DACK3)  
NU (DRQ3)  
NU (DACK1)  
NU (DRQ1)  
NU (REFSH)  
8MHz Clk  
IRQ7  
NU (DACK0) LA17  
NU (DRQ0) MEMR#  
10 NU (DACK5) MEMW# 19 A12  
11 NU (DRQ5) D8  
12 NU (DACK6) D9  
13 NU (DRQ6) D10  
14 NU (DACK7) D11  
15 NU (DRQ7) D12  
16 +5V  
17 NC (Master) D14  
18 GND  
19 GND  
20 A11  
21 A10  
22 A9  
23 A8  
24 A7  
25 A6  
26 A5  
27 A4  
28 A3  
29 A2  
30 A1  
31 A0  
32 GND  
IRQ6  
IRQ5  
IRQ4  
IRQ3  
D13  
NU (DACK2)  
NU (TC)  
BALE  
D15  
KEY  
+5V  
OSC  
GND  
GND  
NU – Not Used  
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Connectors, LEDs and jumpers  
J14 – LCD connector  
Connector: Oupiin 3214-40GRB, 40-way, 1.27mm (0.05") x 2.54mm (0.1") right angled  
boxed header  
Mating connector: Oupiin 1203-40GB (available from Eurotech Sales on request - see  
page 97 for contact details)  
Pin Signal name  
Pin Signal name  
1
3
5
7
9
BKLEN  
PWM0  
NEGBIAS  
GND  
2
4
6
8
BKLSAFE  
LCDSAFE  
POSBIAS  
GND  
FPD1  
10 FPD0  
12 FPD2  
14 FPD4  
16 GND  
18 FPD6  
20 FPD8  
22 FPD10  
24 GND  
26 FPD12  
28 FPD14  
30 FPD16  
32 GND  
34 GND  
36 GND  
38 GND  
11 FPD3  
13 FPD5  
15 GND  
17 FPD7  
19 FPD9  
As viewed from the connector pins  
21 FPD11  
23 GND  
25 FPD13  
27 FPD15  
29 FPD17  
31 GND  
33 BIAS / DE  
35 FCLK / VSYNC  
37 LCLK / HSYNC  
39 PCLK / CLOCK 40 GND  
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Connectors, LEDs and jumpers  
J15 – Serial port – COM2  
Connector: 9-pin D-type plug, male type  
Pin Signal name  
1
2
3
4
5
6
7
8
9
DCD2  
RX2  
TX2  
1
5
DTR2  
GND  
DSR2  
RTS2  
CTS2  
RI2  
6
9
J16 – LVDS connector  
Connector: Hirose DF13-20DP-1.25V(55), 1.25mm pitch double row straight pin header  
Mating connector: Hirose DF13-20DS-1.25C  
Mating crimps: Hirose DF13-2630SCFA  
Pin Signal name  
Pin Signal name  
1
3
5
7
9
+3V3  
2
4
6
8
+3V3  
2
1
GND  
GND  
LVDS_D0-  
GND  
LVDS_D0+  
LVDS_D1-  
20  
19  
LVDS_D1+  
10 GND  
11 LVDS_D2-  
13 GND  
12 LVDS_D2+  
14 LVDS_CLK-  
16 GND  
15 LVDS_CLK+  
17 NC  
18 NC  
19 GND  
20 MSL  
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Connectors, LEDs and jumpers  
J17 – CAN bus  
Connector: Neltron 2417SJ-5-F4, 5-way, 2mm (0.079") pitch wire-to-board header  
Mating connector: Molex 87369-0500 2mm (0.079") pitch crimp housing  
Mating crimps: Molex 50212  
Pin  
Signal name  
1
VCC_CAN (+5V)  
1
2
3
4
5
CANH  
CAN_SCRN  
CANL  
5
GND  
J18 – Serial port (RS485/422) – COM3  
Connector: Neltron 2417SJ-5-F4, 5-way, 2mm (0.079") pitch wire-to-board header  
Mating connector: Molex 87369-0500 2mm (0.079") pitch crimp housing  
Mating crimps: Molex 50212  
Pin  
Signal name  
1
TX3- (RS422)  
RX3/TX3- (RS485)  
5
1
2
TX3+ (RS422)  
RX3/TX3+ (RS485)  
3
4
5
RX3- (RS422)  
RX3+ (RS422)  
GND  
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Connectors, LEDs and jumpers  
J19 – Serial ports – COM3/4  
Connector: Oupiin 3012-20GRB W/ROHS, 20-way, 2.54mm (0.1") dual row IDC boxed  
header  
Mating connector: FCC 71600-020LF  
Pin Signal name  
Pin Signal name  
1
3
5
I2C_SCL  
2
4
6
I2C_SDA  
GND (I²C )  
3.3V (I²C )  
TX4+ (RS422)  
(TX4+/RX4+ RS485)  
TX4- (RS422)  
(TX4-/RX4- RS485)  
1
2
19  
7
9
RX4+ (RS422)  
GND  
8
RX4- (RS422)  
10 GND  
12 DSR3  
14 RTS3  
16 CTS3  
18 RI3  
20  
11 DCD3  
13 RX3  
15 TX3  
As viewed from the connector pins  
17 DTR3  
19 GND  
20 NC  
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Connectors, LEDs and jumpers  
J20 – CompactFlash connector  
Connector: 3M N7E50-M516RB-50, 50-way CompactFlash type II connector  
Pin Signal name Pin Signal name  
1
GND  
D4  
2
4
6
8
D3  
D5  
D7  
A10  
3
5
D6  
7
CE1#  
OE#  
A8  
9
10 A9  
11  
12 A7  
13 +3.3V  
15 A5  
14 A6  
16 A4  
1
17 A3  
18 A2  
19 A1  
20 A0  
21 D0  
22 D1  
23 D2  
24 IOCS16#  
26 CD1#  
28 D12  
30 D14  
32 CE2#  
34 IORD#  
36 WE#  
38 +3.3V  
40 NC  
25 CD2#  
27 D11  
29 D13  
31 D15  
33 GND  
35 IOWR#  
37 RDY/BSY  
39 GND  
41 RESET#  
43 NC  
50  
42 WAIT  
44 REG#  
46 NC  
45 NC  
47 D8  
48 D9  
49 D10  
50 GND  
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Connectors, LEDs and jumpers  
J21 – IEEE802.15.4 / ZigBee connector  
Connector: Harwin M50-4321005, 20-way, 1.27mm dual row socket  
Mating connector: M50-4921005, 20-way, 1.27mm dual row header  
Pin Signal name  
Pin Signal name  
1
3
5
7
9
+3V3  
2
4
6
8
+3V3  
GND  
GND  
NC  
RESET#  
ZB_BTTXD  
ZB_BTRXD  
2
1
20  
19  
ZB_BTCTS# 10 ZB_BTRTS#  
11 NC  
13 NC  
15 NC  
17 NC  
19 NC  
12 NC  
14 NC  
16 NC  
18 NC  
20 NC  
J22 – SDIO socket  
Connector: Molex 67913-0002, 2.50mm (0.098") Pitch SDIO Memory Card Connector,  
Reverse-Mount Type  
Pin  
Signal name  
1
MMDAT3  
MMCMD  
GND  
2
3
4
+3V3  
5
MMCLK  
GND  
6
7
MMDAT0  
MMDAT1  
MMDAT2  
MMC_WP  
+3V3  
8
9
10  
11  
12  
MMC_CD  
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Connectors, LEDs and jumpers  
J23 – Wireless modem/GPS module interface  
Connector: Hirose DF17(4.0)-40DP-0.5V(57), 40-way, 0.5mm pitch header  
Mating connector: Hirose DF17(3.0)-40DS-0.5V(51), 40-way, 0.5mm pitch socket  
Pin  
Signal name  
Pin  
Signal name  
1
VCC_MODEM  
2
VCC_MODEM  
3
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
GSM_FFTXD  
GSM_FFDTR#  
GSM_FFRTS#  
GSM_ON  
PTT  
4
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
GSM_STS  
GSM_FFRXD  
GSM_FFDSR#  
GSM_FFRI#  
GSM_FFDCD#  
GSM_FFCTS#  
GPS_BOOT  
+3V3  
5
6
7
8
9
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
39  
1
2
40  
GPS_PSUON  
+3V3  
GPS_ON  
GPS_PPS  
GPS_STDRXD  
GND  
GPS_STDTXD  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
If you require a custom wireless modem adapter, please contact the Eurotech  
Sales team (see page 97).  
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Connectors, LEDs and jumpers  
J24 – Backlight power (for flat panel displays)  
Connector: Molex 53047-0710, 7-way 1.25mm (0.049") pitch header with friction lock  
Mating connector: Molex 51021-0700, 7-way 1.25mm (0.049") housing, female  
Mating crimps: Molex 50058  
Pin Signal name  
1
2
3
4
5
6
7
BKLSAFE  
BKLSAFE  
GND  
1
7
GND  
BKLEN  
BRT_CTRL  
GND  
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Connectors, LEDs and jumpers  
Jumpers  
There are six user selectable jumpers on the ZEUS. Their use is explained below.  
JP1 – User jumpers  
Connector: 8-way, 2.54mm (0.1") dual row through-hole header  
Pin Signal name  
Pin  
2
Signal name  
GPIO  
8
2
7
1
1
3
5
7
GND  
GND  
GND  
GND  
USER_LINK1  
USER_LINK2  
USER_LINK3  
USER_LINK4  
CPU_GPIO 13  
CPU_GPIO 102  
EXP1_GPIO 6  
EXP1_GPIO 14  
4
6
8
These are four user configurable jumpers connected to GPIO pins of PXA270 and  
MAX7313 GPIO Expander 1.  
JP1  
Description  
GPIO read as ‘0’  
GPIO read as ‘1’ (Default)  
User jumpers 1 and 2 (GPIO 13 and 91) may be  
connected to an external momentary push switch and  
used to wake the ZEUS from sleep.  
JP2 – Battery disconnect  
Connector: 2-way, 2.54mm (0.1") through-hole header  
Pin Signal name  
1
2
Battery Plus Terminal  
1
2
Battery Backup switch input  
Normally supplied with jumper removed.  
This jumper is used to disconnect the backup battery to prevent it from draining.  
JP2  
Description  
Battery connected  
Battery disconnected (default)  
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Connectors, LEDs and jumpers  
JP3 – LCD logic supply selection  
Connector: 3-way, 2.54mm (0.1") single row through-hole header  
Pin Signal name  
1
2
3
+5V  
LCD Logic Supply  
+3V3  
3
1
This jumper selects the supply voltage for the LCD logic supply.  
JP3  
Description  
Supply LCD Logic with 5V  
3
1
1
Supply LCD Logic with 3.3V (Default)  
3
If the LCD requires a 5V supply, please refer  
to the LCD datasheet to ensure that the  
display is compatible with 3.3V logic.  
JP4 – LVDS MSL selection  
Connector: 2-way, 2.54mm (0.1") through-hole header  
Pin Signal name  
1
1
2
MSL  
3.3V  
2
This is an optional LVDS Mode select signal (routed to LVDS connector J16, pin 20).  
JP4  
Description  
MSL set to ‘1’  
MSL set to ‘0’ (Default)  
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Connectors, LEDs and jumpers  
JP5 & JP6 – CAN bus termination  
Connector: 2-way, 2.54mm (0.1") through-hole header  
JP5  
JP6  
JP6  
JP5  
Pin Signal name  
Pin Signal name  
1
2
CANH  
1
2
Centre tap  
CANL  
2
1
1
2
Centre Tap  
JP5 & JP6  
Description  
62Ω Termination connected  
62Ω Termination disconnected  
(default)  
Only insert jumpers JP5 and JP6 if the ZEUS is at the end of the network.  
JP7 - JTAG Enable  
Connector: 2-way, 2.54mm (0.1") through-hole header  
Pin Signal name  
2
1
1
2
VCC (+5V)  
VCC_JTAG  
This jumper is used to enable debug of PXA270 using JTAG interface.  
JP7  
Description  
JTAG Enable  
Normal Operation (Default)  
Only insert jumper JP7 for JTAG access to PXA270.  
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Connectors, LEDs and jumpers  
Status LEDs  
Flash LED  
There is a single status LED (D10) on the ZEUS, which indicates access to the Flash  
memory.  
User LEDs  
There are three user LEDs on the ZEUS front panel (D3). They are connected to the  
GPIO pins of the on-board GPIO Expander 1 MAX7313 (I2C bus address 0x21), as  
shown in the table below:  
EXP1_GPIO Signal name  
Active  
LED1  
LED2  
3
4
5
USER_LED1# Low  
USER_LED2# Low  
USER_LED3# Low  
LED3  
As viewed from the front panel  
© 2007 Eurotech Ltd Issue D  
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Appendix A - Contacting Eurotech  
Appendix A - Contacting Eurotech  
Eurotech sales  
Eurotech’s sales team is always available to assist you in choosing the board that best  
meets your requirements.  
Eurotech Ltd  
3 Clifton Court  
Cambridge  
CB1 7BN  
UK  
Tel:  
+44 (0)1223 403410  
+44 (0)1223 410457  
Fax:  
Email: [email protected]  
Comprehensive information about our products is also available at our web site:  
www.eurotech-ltd.co.uk.  
While Eurotech’s sales team can assist you in making your decision, the final  
choice of boards or systems is solely and wholly the responsibility of the buyer.  
Eurotech’s entire liability in respect of the boards or systems is as set out in  
Eurotech’s standard terms and conditions of sale. If you intend to write your  
own low level software, you can start with the source code on the disk supplied.  
This is example code only to illustrate use on Eurotech’s products. It has not  
been commercially tested. No warranty is made in respect of this code and  
Eurotech shall incur no liability whatsoever or howsoever arising from any use  
made of the code.  
Eurotech technical support  
Eurotech has a team of dedicated technical support engineers available to provide a  
quick response to your technical queries.  
Tel:  
Fax:  
+44 (0)1223 412428  
+44 (0)1223 410457  
Email: [email protected]  
Eurotech Group  
Eurotech Ltd is a subsidiary of Eurotech Group. For further details see  
www.eurotech.com  
© 2007 Eurotech Ltd Issue D  
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Appendix B - Specification  
Appendix B - Specification  
Microprocessor  
•
PXA270 312/416/520MHz processor (520MHz as standard option).  
Cache  
•
32K data cache, 32K instruction cache, 2K mini data cache.  
System memory  
•
Fixed on-board memory: 64/128MB/256MB SDRAM (32-bit wide SDRAM data  
bus).  
Flash memory  
•
Fixed on-board memory: 32/64MB Flash.  
SRAM  
•
•
256KB of SRAM - battery backed on board.  
256KB of SRAM internal to PXA270.  
Serial ports  
•
4x UART fast serial ports:  
- 4x 16550 compatible UARTs (921.6 Kbaud):  
- 1x RS422/485 (software selectable).  
- 1x RS232/422/485 (software selectable).  
- 2x RS232.  
USB support  
•
•
2x USB 1.1 host controller ports.  
USB 1.1 client controller port (software selectable on port 2).  
Network support  
•
•
2x IEEE 802.3u 10/100Base-T Ethernet controllers.  
Option for external PoE.  
Wireless support  
•
•
•
GPS with full PVT functionality on low profile add-on module.  
GSM/GPRS, iDEN, CDMA modem on low profile add-on module.  
IEEE802.15.4 / ZigBee radio interface on low profile add-on module.  
Expansion interfaces  
•
•
•
Compact Flash CF+ extension socket.  
SDIO socket to support MMC/SD/SDIO cards.  
16-bit PC/104 interface.  
Date/time support  
•
•
Real time clock – battery backed on-board.  
Accuracy +/- 1min/month.  
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Appendix B - Specification  
Video  
•
•
18-bit flat panel interface for STN and TFT displays.  
Optional LVDS interface.  
Audio and touchscreen  
•
•
AC’97 compatible CODEC.!  
Touchscreen support – 4/5-wire analogue resistive.  
Quick Capture camera interface  
•
Intel Quick Capture technology.  
I2C bus  
•
Multi-master serial bus.  
Configuration EPROM  
•
I2C EPROM for storing configuration data.  
CAN bus  
•
Optional CAN 2.0B protocol controller and opto-isolated transceiver.  
Watchdog timer  
•
External to PXA270, generates reset on timeout. Timeout range 1ms-60s.  
16 x general purpose I/O.  
General I/O  
•
Temperature sensor  
•
I2C temperature sensor.  
User LEDs  
•
Front panel user LEDs (3x yellow).  
Test support  
•
JTAG interface (standard 20-pin ARM header).  
Power requirements  
•
5V +/-5% operation (ATX style connector) or vehicle compatible 10-30V input (front  
panel connector).  
•
•
Consumption: 2W typical (no CF, LCD, PC/104, USB devices fitted).  
Sleep mode: 20mA (100mW) typical.  
Mechanical  
•
•
EPIC form factor (115mm x 165mm).  
Environmental  
Operating temperature:  
- Commercial: -20°C (-4°F) to +70°C (+158°F).  
- Industrial: -40°C (-40°F) to +85°C (+185°F).  
•
•
Humidity: 10% to 90% RH (non-condensing).  
RoHS Directive (2002/95/EC) compliant.  
© 2007 Eurotech Ltd Issue D  
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Appendix C - Mechanical diagram  
Appendix C - Mechanical diagram  
All dimensions are shown in mm.  
© 2007 Eurotech Ltd Issue D  
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Appendix C - Mechanical diagram  
When mounting the ZEUS use only M3 (metric) or 4-40 (Imperial) screws. The  
mounting pad is 6.35mm (0.25") and the hole is 3.175mm (0.125"), so ensure  
any washers fitted are smaller than the pad.  
Using oversized screws and washers, or tooth locking washers, can cause  
short circuits and over-voltage conditions.  
We recommend that you use a Loctite screw thread lock or a similar product  
over tooth locking washers.  
© 2007 Eurotech Ltd Issue D  
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Appendix D - Reference information  
Appendix D - Reference information  
Product information  
Product notices, updated drivers, support material, 24hr-online ordering:  
www.eurotech-ltd.co.uk  
EPIC information  
Embedded Platform for Industrial Computing:  
www.pc104.org/technology/PDF/EPIC_Spec_2.0.pdf  
PC/104 Consortium  
PC/104 Specifications - vendor information and available add on products:  
www.pc104.org  
USB information  
Universal Serial Bus (USB) specification and product information:  
www.usb.org  
SDIO card information  
SD Card Association and product information:  
www.sdcard.org  
www.sdcard.com  
CompactFlash information  
CompactFlash Association and product information:  
www.compactflash.org  
ZigBee information  
ZigBee Alliance:  
www.zigbee.org  
Davicom Semiconductor Inc  
Davicom DM9000A Ethernet Controller documentation:  
www.davicom.com.tw/eng/index.htm  
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Appendix D - Reference information  
Intel  
PXA270 processor documentation:  
www.intel.com  
Marvell  
PXA270 processor documentation:  
www.marvell.com  
Exar Corporation  
Exar XR16C554DCQ Quad UART documentation:  
www.exar.com  
Wolfson Microelectronics  
Wolfson WM9712L AC’97Codec documentation:  
www.wolfson.co.uk  
Spansion  
Intersil  
S29GL-N MirrorBitTM Flash Family documentation:  
www.spansion.com  
RTC ISL1208 documentation:  
www.intersil.com  
Microchip  
CAN Bus Controller/Transceiver MPC2515/MPC2551 documentation and 24AA01  
EEPROM documentation:  
www.microchip.com  
Maxim  
Philips  
GPIO Expander MAX7313 documentation:  
www.maxim-ic.com  
Temperature Sensor LM75A documentation:  
www.philips.com  
© 2007 Eurotech Ltd Issue D  
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Appendix E - Wireless modem datasheets  
Appendix E - Wireless modem datasheets  
Sony Ericsson GR64  
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Appendix E - Wireless modem datasheets  
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Appendix E - Wireless modem datasheets  
Siemens MC39i  
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Appendix E - Wireless modem datasheets  
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Appendix E - Wireless modem datasheets  
Fastrax iTrax03/08  
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Appendix E - Wireless modem datasheets  
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Appendix E - Wireless modem datasheets  
Motorola iO270  
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Appendix E - Wireless modem datasheets  
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Appendix E - Wireless modem datasheets  
Telit GE863-GPS  
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Appendix E - Wireless modem datasheets  
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Appendix E - Wireless modem datasheets  
Sierra Wireless MC8775  
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Appendix E - Wireless modem datasheets  
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Appendix E - Wireless modem datasheets  
Sierra Wireless MC5720  
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Appendix E - Wireless modem datasheets  
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Appendix F - ZEUS Modem details  
Appendix F - ZEUS Modem details  
ZEUS Modem-1  
The following photos show the ZEUS Modem-1 with Fastrax GPS receiver and three  
possible options for wireless modem.  
J9 – iO270 audio  
JP1  
J4  
J3  
J1  
ZEUS host  
interface  
GPS module  
J2  
SIM select SIM card  
iO270 SONY GR64  
Siemens MC39i  
ZEUS Modem-2  
The following photos show the ZEUS Modem-2 with Telit option for wireless modem.  
J4  
SIM card  
ZEUS host  
interface  
U7  
Telit GE683-GPS  
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Appendix F - ZEUS Modem details  
ZEUS Modem-3  
The following photos show the ZEUS Modem-3 with Fastrax GPS receiver and several  
possible options for Sierra Wireless embedded modules.  
J2 – Sierra wireless  
USB data (see below)  
J4 –  
SIM card  
J1 – Sierra  
Wireless module  
ZEUS host  
interface  
GPS module  
J2 –Sierra wireless USB data connector  
Connector: NELTRON 2417RJ-3-F4, 3-way 2mm header  
Mating connector: JST PHR-3, 3-way 2mm housing, female  
Mating crimps: JST SPH-002T-P0.5S  
Pin Signal name  
1
2
3
SHIELD  
DATA-  
DATA+  
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Appendix F - ZEUS Modem details  
ZEUS Modem connector details  
ZEUS host interface  
Module connector: Hirose DF17(3.0)-40DS-0.5V(51), 40-way, 0.5mm pitch socket  
Host connector: Hirose DF17(4.0)-40DP-0.5V(57), 40-way, 0.5mm pitch header  
Pin  
1
Signal name  
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
GSM_FFTXD1  
GSM_FFDTR#1  
GSM_FFRTS#1  
GSM_ON  
Pin  
2
Signal name  
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
VCC_MODEM  
GSM_STS  
GSM_FFRXD1  
GSM_FFDSR#1  
GSM_FFRI#1  
GSM_FFDCD#1  
GSM_FFCTS#1  
GPS_BOOT  
+3V3  
3
4
5
6
7
8
9
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
2
1
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
PTT  
GPS_PSUON  
+3V3  
GPS_ON  
GPS_PPS  
GPS_STDRXD  
GND  
GPS_STDTXD  
GND  
40  
39  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
Note 1: Not used on Zeus Modem-3.  
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Appendix F - ZEUS Modem details  
The following table shows the functions of control/status pins on the host interface:  
EXP1_GPIO Signal name  
Dir  
Active  
Function  
7
PTT  
Output  
Input  
Output  
Input  
Input  
Input  
Output  
High  
Push To Talk. See note 1  
8
GSM_ON  
GSM_STS  
GPS_ON  
GPS_PSUON  
GPS_BOOT  
GPS_PPS  
See note 2 Modem enable  
9
High  
High  
High  
NA  
Modem ON/OFF status  
10  
11  
12  
13  
GPS module enable  
Not Used (PU keeps it at logic ‘1’)  
Not Used (PU keeps it at logic ‘1’)  
GPS Pulse Per Second  
NA  
Note 1: Only available with iDEN modules.  
Note 2: Please see the datasheet of the particular module used.  
GSM_ON is inverted when used with iDEN modules  
(GSM_ON=’0’ – iDEN module is on).  
J9 –iO270 audio/PTT connector  
Connector: NELTRON 2417RJ-8-F4, 8-way 2mm header  
Mating connector: JST PHR-8, 8-way 2mm housing, female  
Mating crimps: JST SPH-002T-P0.5S  
Pin Signal name  
1
2
3
4
5
6
7
8
SPKR-  
SPKR+  
3V_OPT  
VCC  
8
1
As viewed from the connector pins  
GND  
PTT  
MIC-  
MIC+  
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Appendix G - ZEUS-FPIF details  
Appendix G - ZEUS-FPIF details  
The ZEUS-FPIF allows easy connection between the ZEUS and a variety of TFT or  
STN LCD flat panel displays.  
J5  
J2  
JP1  
J1  
J3  
J4  
The connectors on the following pages are shown in the same orientation as  
the picture above.  
Connector Function  
JP1  
J1  
TFT clock delay selection  
ZEUS LCD cable connector  
J2  
Generic LCD connector  
J3  
Direct connection to a NEC NL3224BC35-20 5.5inch 320x240 TFT display  
Connects to backlight inverter  
J4  
J5  
STN bias voltages  
JP1 – TFT clock delay selection  
It has been found that some TFT displays require a delay on the clock. If this is  
required fit the jumper in position A; if not, fit it in position B.  
A
B
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Appendix G - ZEUS-FPIF details  
J1 – ZEUS LCD cable connector  
Connector: Oupiin 3215-40GSB/SN, 40-way, 1.27mm (0.05") x 2.54mm (0.1") straight-  
boxed header  
Mating connector: Oupiin 1203-40GB/SN (available from Eurotech Ltd on request)  
Pin  
Signal name  
Pin  
Signal name  
1
BKLEN  
PWM0  
2
BKLSAFE  
LCDSAFE  
POSBIAS  
GND  
3
4
5
NEGBIAS  
GND  
6
7
8
9
FPD1  
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
38  
40  
FPD0  
FPD2  
FPD4  
GND  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
35  
37  
39  
FPD3  
FPD5  
GND  
FPD7  
FPD6  
FPD8  
FPD10  
GND  
FPD9  
FPD11  
GND  
FPD13  
FPD12  
FPD14  
NC  
FPD15  
NC  
GND  
GND  
BIAS (DE)  
FCLK (VSYNC)  
LCLK (HSYNC)  
PCLK (CLOCK)  
GND  
GND  
GND  
GND  
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Appendix G - ZEUS-FPIF details  
J2 – Generic LCD connector  
Connector: Taicom TI34BHS, 34-way, 2.54mm (0.1") x 2.54mm (0.1") straight-boxed  
header  
Mating connector: Fujitsu FCN-723-B034/2  
Mating connector crimps: Fujitsu FCN-723J-AU/Q. (As it is possible to connect a crimp  
type connector to J2, a wide range of LCD displays can be connected with a custom  
cable)  
Pin  
1
Signal name  
GND  
Pin  
2
Signal name  
FPD0  
3
FPD1  
4
FPD2  
5
GND  
6
FPD3  
34  
33  
7
FPD4  
8
FPD5  
9
FPD6  
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
GND  
11  
13  
15  
17  
19  
21  
23  
25  
27  
29  
31  
33  
FPD7  
FPD8  
FPD9  
FPD10  
GND  
GND  
FPD11  
FPD13  
FPD14  
GND  
FPD12  
GND  
FPD15  
PCLK (CLOCK)  
LCDSAFE  
LCLK (HSYNC)  
GND  
GND  
2
1
LCDSAFE  
FCLK (VSYNC)  
BKLSAFE  
NC  
BIAS (DE)  
BKLEN  
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Appendix G - ZEUS-FPIF details  
J3 – Direct connection to a NEC NL3224BC35-20 5.5inch 320x240 TFT display  
Connector: Oupiin 2345-33TD2/SN  
Mating cable: Eunsung 0.5x33x190xAx0.035x0.3x5x5x10x10  
Pin  
1
Signal name  
GND  
Pin  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
Signal name  
FPD10  
GND  
2
PCLK (CLOCK)  
LCLK (HSYNC)  
FCLK (VSYNC)  
GND  
3
GND  
4
FPD0  
5
FPD1  
6
GND  
FPD2  
7
FPD11  
FPD3  
8
FPD12  
FPD4  
9
FPD13  
GND  
10  
11  
12  
13  
14  
15  
16  
17  
FPD14  
LBIAS  
LCDSAFE  
LCDSAFE  
GND  
FPD15  
GND  
FPD5  
FPD6  
GND  
FPD7  
GND  
FPD8  
GND  
FPD9  
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Appendix G - ZEUS-FPIF details  
J4 – Backlight inverter connector  
Connector: FCI 76384-407LF  
Mating connector: FCI 65240-007LF  
Mating connector crimps: FCI 76357-401LF  
Pin Signal name  
1
2
3
4
5
6
7
BKLSAFE  
BKLSAFE  
GND  
GND  
BKLEN  
BRT_CTRL  
GND  
J5 – STN Bias connector  
Connector: FCI 76384-404LF  
Mating connector: FCI 65240-004LF  
Mating connector crimps: FCI 76357-401LF  
Pin Signal name  
1
2
3
4
POSBIAS  
GND  
GND  
NEGBIAS  
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Appendix H - ZEUS-FPIF-CRT details  
Appendix H - ZEUS-FPIF-CRT details  
The ZEUS-FPIF-CRT allows the ZEUS to drive a CRT Monitor or an analogue LCD flat  
panel. Sync on green and composite sync monitors are not supported.  
J2  
J1  
The connectors on the following pages are shown in the same orientation as  
the picture above, unless otherwise stated.  
Connector Function  
J1  
J2  
ZEUS LCD cable connector  
CRT connector  
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Appendix H - ZEUS-FPIF-CRT details  
J1 – ZEUS LCD cable connector  
Connector: Oupiin 3215-40CSB/SN, 40-way, 1.27mm (0.05") x 2.54mm (0.1") straight-  
boxed header  
Mating connector: Oupiin 1203-40GB/SN (available from Eurotech Ltd on request)  
Pin  
Signal name  
Pin  
Signal name  
40  
38  
36  
34  
32  
30  
28  
26  
24  
22  
20  
18  
16  
14  
12  
10  
8
GND  
GND  
GND  
GND  
GND  
NC  
39  
37  
35  
33  
31  
29  
27  
25  
23  
21  
19  
17  
15  
13  
11  
9
CLOCK  
HSYNC  
VSYNC  
DE  
GND  
NC  
FPD14  
FPD12  
GND  
FPD10  
FPD8  
FPD6  
GND  
FPD4  
FPD2  
FPD0  
GND  
NC  
FPD15  
FPD13  
GND  
FPD11  
FPD9  
FPD7  
GND  
FPD5  
FPD3  
FPD1  
GND  
NC  
7
6
5
4
NC  
3
NC  
2
BKLSAFE  
1
NC  
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Appendix H - ZEUS-FPIF-CRT details  
J2 – CRT connector  
Connector: Oupiin 7916-15FA/SN, 15-way, female, high density, right-angled D-Sub.  
Pin Signal name Pin Signal name Pin Signal name  
5
1
1
2
3
4
5
RED  
6
7
8
9
RED GND  
GREEN GND 12  
BLUE GND 13  
5V_VGASAFE 14  
15  
11  
NC  
GREEN  
BLUE  
NC  
NC  
10  
6
HSYNC  
VSYNC  
NC  
15  
11  
(As viewed from  
the connector pins)  
TTL GND  
10 SYNC GND  
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Appendix H - Acronyms and abbreviations  
Appendix H - Acronyms and abbreviations  
Amp  
Amplifier  
BTUART  
CCCR  
CODEC  
COM  
CPLD  
CPU  
Bluetooth Universal Asynchronous Receiver / Transmitter  
Core Clock Configuration Register  
Coder/Decoder  
Communication Port  
Complex Programmable Logic Device  
Central Processing Unit (PXA270)  
Complementary Metal Oxide Semiconductor  
Direct Memory Access  
CMOS  
DMA  
DUART  
EEPROM  
EMC  
EPIC  
EPROM  
FFUART  
FIFO  
Flash  
FPIF  
Dual Universal Asynchronous Receiver / Transmitter  
Electrically Erasable and Programmable Read-Only Memory  
Electromagnetic Compatibility  
Embedded Platform for Industrial Computing  
Erasable and Programmable Read-Only Memory  
Full Function Universal Asynchronous Receiver / Transmitter  
First-In First-Out  
A non-volatile memory that is preserved even if the power is lost  
Flat Panel Interface  
GPIO  
I²C  
IEEE  
IO  
General Purpose Input/Output  
(=IIC) Intra Integrated Circuit bus  
Institute of Electrical and Electronics Engineers  
Input/Output  
ISA  
JTAG  
LED  
Industry Standard Architecture, Bus in the IBM-PC  
Joint Test Action Group of IEEE  
Light Emitting Diode  
LCD  
Liquid Crystal Display  
LSB  
Least Significant Bit  
LVDS  
MOSFET  
NA  
Low Voltage Differential Signalling  
Metal-Oxide Semiconductor Field-Effect Transistor  
Not Applicable  
NC  
No Connect  
NU  
Not Used  
OS  
Operating System  
PC/104  
Offers full architecture, hardware and software compatibility with the  
PC ISA bus, but in ultra-compact 96mm x 91mm (3.775" x 3.550")  
stackable modules  
PCB  
PoE  
Printed Circuit Board  
Power over Ethernet  
PROM  
PWM  
RAM  
RTC  
RX  
Programmable Read-Only Memory  
Pulse-Width Modulation  
Random Access Memory  
Real Time Clock  
Receive  
SBC  
Single Board Computer  
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Appendix H - Acronyms and abbreviations  
SDIO  
SDRAM  
SRAM  
STN  
STUART  
SVGA  
TFT  
Secure Digital Input/Output  
Synchronous Dynamic Random Access Memory  
Static Random Access Memory  
Super Twisted Nematic, technology of passive matrix liquid crystal  
Standard Universal Asynchronous Receiver / Transmitter  
Super Video Graphics Adapter, display resolution 800 x 640 pixels  
Thin Film Transistor, a type of LCD flat-panel display screen  
Transmit  
TX  
UART  
USB  
Universal Asynchronous Receiver / Transmitter  
Universal Serial Bus  
VAC  
Voltage Alternating Current  
VDC  
Voltage Direct Current  
VGA  
WDT  
Video Graphics Adapter, display resolution 640 x 480 pixels  
Watchdog Timer  
ZEUS-ICE  
ZEUS-Industrial Compact Enclosure  
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Appendix I - RoHS-6 Compliance - Materials Declaration Form  
Appendix I - RoHS-6 Compliance - Materials Declaration Form  
Confirmation of Environmental Compatibility for Supplied Products  
Substance  
Maximum concentration  
Lead  
0.1% by weight in homogeneous materials  
0.1% by weight in homogeneous materials  
0.1% by weight in homogeneous materials  
0.1% by weight in homogeneous materials  
0.1% by weight in homogeneous materials  
0.01% by weight in homogeneous materials  
Mercury  
Hexavalent chromium  
Polybrominated biphenyls (PBBs)  
Polybrominated diphenyl ethers (PBDEs)  
Cadmium  
The products covered by this certificate include:  
Product Name  
Eurotech Ltd Part Number  
ZEUS-Mx-Fy-ZZZ-R6 (all variants)  
ZEUS-FPIF-R6  
ZEUS  
ZEUS-FPIF  
ZEUS-FPIF-CRT  
ZEUS MODEM -1  
ZEUS MODEM-2  
ZEUS MODEM -3  
ZEUS-FPIF-CRT-R6  
ZEUS MODEM-1-R6  
ZEUS MODEM-2-R6  
ZEUS-MODEM3-R6  
Note: All recommended wireless modems are RoHS compliant with exception of the iO270 iDEN module.  
Eurotech Ltd has based its material content knowledge on a combination of information provided by third  
parties and auditing our suppliers and sub-contractor’s operational activities and arrangements. This  
information is archived within the associated Technical Construction File. Eurotech Ltd has taken reasonable  
steps to provide representative and accurate information, though may not have conducted destructive testing  
or chemical analysis on incoming components and materials.  
Additionally, packaging used by Eurotech Ltd for its products complies with the EU Directive 2004/12/EC in  
that the total concentration of the heavy metals cadmium, hexavalent chromium, lead and mercury do not  
exceed 100 ppm.  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Index  
Index  
A
COM1 · 53, 83  
abbreviations · 131  
acronyms · 131  
COM2 · 53, 86  
COM3 · 54, 88  
active display signal · 45  
address map · 19  
anti-static · 5  
COM4 · 55, 88  
CompactFlash · 16, 34, 40  
connector · 89  
Arcom, contacting · 97  
assignments, GPIO pins · 22, 29  
audio · 16, 49  
power management · 70  
configuration PROM power management · 73  
connectors · 74, 76  
contact details · 97  
connector · 79  
power management · 71  
contacting Arcom · 97  
B
D
backlight  
debug access · 62  
display · 44  
brightness · 47  
inverter connector · 127  
power · 92  
E
Base TX Ethernet · 52  
battery  
electromagnetic compatibility · 5  
EMC · 5  
backup · 65  
disconnect · 93, 95  
block diagram · 18  
board · 6  
environmental compliance · 5, 133  
Ethernet · 17, 52  
connector · 80  
address map · 19  
block diagram · 18  
diagram · 8  
power management · 71  
expansion  
bus · 17  
features · 10  
interfaces · 38  
hardware description · 18  
mechanical diagram · 100  
specification · 98  
variants · 6  
external interrupt · 28  
F
Flash  
boot loader · 17  
bus  
LED · 96  
memory · 33  
flat panel display · 44  
flat panel interface · 13  
FPIF · 123  
expansion · 17  
I²C · 58  
C
camera interface · 59  
connector · 82  
CAN bus · 87  
power management · 72  
termination · 95  
CF+ · 40  
G
general purpose I/O · 60  
GPIO  
connector · 81  
pin assignments · 22, 29  
clock · 31  
generator power management · 72  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Index  
LCD · 13, 44, 123, 128  
backlight brightness · 47  
connector · 85  
H
hardware description · 18  
generic connector · 125  
SBC cable connector · 124, 129  
LCD logic supply selection · 94  
LEDs · 74, 96  
Linux, PC/104 interrupts · 42  
LTC3442 · 64  
I
I/O expander, power management · 73  
I²C bus · 58  
interface · 52  
internal interrupt · 28  
interrupt · 28  
LVDS  
connector · 86  
interface · 47  
MSL selection · 94  
power management · 71  
external · 28  
internal · 28  
J
M
J1 · 77  
J10 · 82  
J11 · 83  
J12 · 84  
J13 · 84  
J14 · 85  
J15 · 86  
J16 · 86  
J17 · 87  
J18 · 87  
J19 · 88  
J2 · 78  
map, address · 19  
materials declaration form · 133  
MAX6369 · 32  
mechanical diagram · 100  
memory · 33  
modem boards · 13  
P
passive display signal · 45  
PC/104 · 41  
J20 · 89  
J21 · 90  
J22 · 90  
J23 · 91  
J24 · 92  
J3 · 78  
J4 · 79  
J5 · 79  
J6 · 80  
J7 · 81  
connector · 84  
PC/104 interrupts · 42  
port, serial · 53, 57  
power · 63  
connector · 63, 78  
management · 66, 68, 70  
supply · 63  
USB · 70  
voltage · 63, 64  
processor  
J8 · 81  
J9 · 82  
power management · 66  
PXA255 · 20  
JP1 · 93  
JP2 · 93, 95  
JP3 · 94  
JP4 · 94  
JP5 · 95  
JP6 · 95  
JTAG · 62  
connector · 79  
jumper diagrams · 14  
jumpers · 74, 93  
PXA255 · 20  
Q
Quick Capture camera interface · 59  
R
RAM, static · 34  
real time clock · 31  
reference information · 102  
RoHS-6 compliance · 133  
RS232 · 16, 53, 54  
RS422 · 16, 55, 87  
RS485 · 16, 55, 87  
K
key · 14  
L
LAN · 17  
© 2007 Eurotech Ltd Issue D  
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ZEUS Technical Manual  
Index  
S
U
sales team · 97  
USB  
SDIO · 39  
client header · 82  
socket · 90  
SDRAM · 33  
connector · 81  
interface · 51  
serial ports · 16, 53, 57, 83, 86, 87, 88  
silicon disk · 33  
ports · 16  
power · 70  
sleep mode · 67  
source code · 97  
specification · 98  
static · 5  
power management · 70  
user jumpers · 93  
user LEDs · 96  
static RAM · 34  
V
STN · 13, 45, 123, 128  
bias connector · 127  
bias voltage · 47  
support products · 13  
support, technical · 97  
symbols · 14  
VBUSx · 70  
W
wake-up · 67  
watchdog timer · 32  
wireless  
T
interface · 91  
support · 35  
tables · 15  
technical support · 97  
temperature sensor · 61  
power management · 73  
TFT · 44, 123  
timer, watchdog · 32  
touch screen  
Z
ZigBee · 13  
connector · 90  
connector · 77  
touchscreen · 50  
© 2007 Eurotech Ltd Issue D  
135  
ZEUS Technical Manual  
Index  
S
U
sales team · 97  
USB  
SDIO · 39  
client header · 82  
socket · 90  
SDRAM · 33  
connector · 81  
interface · 51  
serial ports · 16, 53, 57, 83, 86, 87, 88  
silicon disk · 33  
ports · 16  
power · 70  
sleep mode · 67  
source code · 97  
specification · 98  
static · 5  
power management · 70  
user jumpers · 93  
user LEDs · 96  
static RAM · 34  
V
STN · 13, 45, 123, 128  
bias connector · 127  
bias voltage · 47  
support products · 13  
support, technical · 97  
symbols · 14  
VBUSx · 70  
W
wake-up · 67  
watchdog timer · 32  
wireless  
T
interface · 91  
support · 35  
tables · 15  
technical support · 97  
temperature sensor · 61  
power management · 73  
TFT · 44, 123  
timer, watchdog · 32  
touch screen  
Z
ZigBee · 13  
connector · 90  
connector · 77  
touchscreen · 50  
© 2007 Eurotech Ltd Issue D  
136  

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