ELAN DIGITAL SYSTEMS LTD.
LITTLE PARK FARM ROAD,
SEGENSWORTH WEST,
FAREHAM,
HANTS. PO15 5SJ.
TEL: (44) (0)1489 579799
FAX: (44) (0)1489 577516
e-mail: [email protected]
website: http://www.pccard.co.uk
CF232 COMPACT FLASH™ CF+ CARD
USER’S GUIDE
Also covers CF232-5
Compact Flash is a trademark of Sandisk Corporation. All other Trademarks are duly acknowledged.
REVISION HISTORY
ISSUE PAGES
DATE
NOTES
FIRST ISSUE
H/W Rev3.00
1
2
3
8
9
9
20.08.2001
23.04.2002
24.05.2002
Electrical Specs Updated
Elan Digital Systems Ltd.
1
CF232 USER’S GUIDE
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1. OVERVIEW
The CF232 card is an RS232 Serial card with the following features:
· Tiny TypeI Compact Flash form factor for CF+ equipped PDAs,
Handheld PCs, laptops etc.
· DOS, Windows 3.1x, 95, 98, 98SE, Me, NT4, 2000, XP, CE,
PocketPC compatible using O.S. standard drivers
· Industry standard 16550 register set
· Transmission rates up to 115.2K Baud as standard.
· H/W Rev3.00 cards have switchable x1 or x8 baud rate giving up
to 921Kbaud.
· Works at 3.3V or 5V
· Full hardware modem control line support
· Compatible with all standard serial comms software
· Works in PC-Card slots using Compact Flash adapter (not
supplied as standard but available as an option)
· CF232-5 has host supply pin instead of “RI” for powering
external devices
· Standard PC IO port decode for COM1 to COMn
· “Any” IO port and interrupt decode option for best pnp flexibility
· ESD protected RS232 ports.
· Software controlled power management.
· Low power consumption.
· Supplied with 300mm DB9-male terminated cable with
“standard” com port pin-out.
This guide aims to familiarise you with the way that the CF232
works and so will help you to maximise its performance in your
application.
Elan will be happy to quote for either customisation of the CF232 if
its exact specifications do not quite meet your needs, or to create
complete application software.
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2. ABOUT THE CF232
The CF232 card is an RS232 serial card with Elan’s own 16550
compatible UART ASIC device, called the VPU16550. The serial
data and control lines are buffered using ESD protected RS232
drivers.
Industry standard baud rates up to 115.2K baud are supported,
together with 16-byte deep TX and RX FIFOs. On H/W Rev3.00
cards, a small switch is located at the back edge of the card, which
allows selection of “x1” or “x8” baud rate multiplier. This feature
allows up to 921KBaud operation without needing special device
drivers on the host (in x8 mode you simply multiply the setting
shown on the host by 8 to get the real serial data rate e.g. 19200Baud
set on host with x8 mode gives 153600Baud true rate in hardware).
See section 5 for the switch settings.
For further information please refer to the VPU16550 data sheet
available from our website, http://www.pccard.co.uk
The CF232 conforms to the industry standard Compact Flash+
interface that allows connection of peripherals to the system bus of a
laptop, handheld PC or PDA. The CF+ specification extends the
earlier memory-only Compact Flash interface to allow I/O devices
and extra power for the card. The CF232 is an I/O type device and
therefore requires a CF+ capable slot.
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3. INSTALLING THE CF232
3.1 DOS & Windows 3.1x
Operation in DOS or Windows 3.1 requires 3rd party Card and
Socket Services drivers to be properly installed and configured.
Follow your software vendor’s instructions on how to do this.
The CF232 requires no extra drivers to operate in DOS. Insertion of
the card should create a familiar “happy beep” as the host software
configures the card a standard DOS COM port. Resource allocation
and troubleshooting is all down to the 3rd party software and any
issues that may arise during configuration of the CF232 should be
addressed to the vendors of this software.
The CF232 has been tested with:
SystemSoft Cardware
Award Cardwizard
3.2 Windows 95, 98, 98SE, Me, NT4, 2000, XP
The “generic” serial drivers in these Operating Systems support the
CF232. No extra driver software is needed but you will need to
install Card Center Pro, or use the INF file that can be found on the
first disk of the installation set.
Installing the supplied Card Center Pro software that comes with
your product will copy the INF file into the Windows/INF folder.
Windows will use this INF file to “recognise” the CF232 card.
Alternatively, when Window’s does a first-time search for the driver
for the CF232 card, you can use Disk#1 from the CCP set.
3.3 Windows CE, PocketPC
There is no need to install any software for Windows CE or
PocketPC. Simply insert the CF232 card and it will appear in a list
when you go to set up a “Connection”.
Elan Digital Systems Ltd.
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4. CF232 REGISTER INTERFACE
Full details of the CF232’s register interface can be found in the
VPU16550 data sheet, available at Elan’s website
For reference, the CF232 and the CF232-5 both behave as a 5V card
to the host system because Vs1 and Vs2 pins are no connects. This
is to make the host default to 5V when possible, giving the highest
RS232 output signals and therefore best noise margins. The Card
Information Structure does not define any 3.3V tuples because some
platforms will also take this as a sign to run at 3.3V even when 5V is
available. On a PDA or HPC, the host will power the card at 5V if
it’s available, or 3.3V otherwise (despite there being no 3.3V tuple
entries).
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5. HARDWARE SPECIFICATION
5.1 PINOUT
The CF232 is supplied with a 300mm long Type45 cable that
terminates with a DB9 Male connector with female screwlocks (to
match the port at the back of a PC)
The pin-out below applies to both the CF232 card and the DB9 male
connector on the supplied cable (the cable is pinned one-to-one).
PIN
1*
2
NAME
DCD
RX
FUNCTION
Data Carrier Detect input
Receive Data input
Transmit Data output
3
TX
Data Terminal Ready output
GROUND
4
5
DTR
GND
Data Set Ready input
6
DSR
Request To Send output
7
RTS
Clear To Send input
8
CTS
Ring Indicate input (CF232) or Host Vcc (CF232-5)
9
RI or Host Vcc*
* Total Host Vcc current available is limited by the host’s capabilities. Exceeding its maximum
could damage the CF232 and/or the host. The Host Vcc output may be at 5V or 3.3V.
For ref: mating connector type: Honda rmc-e9f2s-bsla2n-a2
*Pin 1 is nearest the edge of the card.
PIN 9
PIN 1
H/W Rev1.00 to 2.00 (incl.)
x8
PIN 9
PIN 1
x1
H/W Rev3.00 (with baud multiplier switch)
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5.2 ELECTRICAL
All figures quoted are typical parameters @ 25°C
RS232 SIGNALS:
Typical output level ±5.5V (open circuit voltages)
ESD PROTECTION:
All RS232 signal lines on the CF232 card are protected
against electrostatic discharge (ESD)
·
15kv - human body model
·
·
8kv - IEC1000-4-2,contact discharge
15kv - IEC1000-4-2,air-gap discharge
UART CLOCK SPEED:
1.8432MHz, max baud rate 115.2KBaud
On H/W Rev3.00 cards switch selectable Baud rate
multiplier:
x1: UART CLOCK is 1.8432MHz ->115.2KBaud max
x8: UART CLOCK is 14.7456MHz->921.6KBaud max
5.3 POWER CONSUMPTION
All figures quoted are typical parameters @ 25°C
VCC CURRENT:
20mA typical @ 5V, 13mA typical @ 3.3V
IN STANDBY MODE :
14mA typical @ 5V, 5mA typical @ 3.3V
5.4 MECHANICAL
MASS:
10g typical.
FORM FACTOR:
36.4mm x 42.8mm x 3.3 mm overall size
5.5 ENVIRONMENTAL
HUMIDITY:
TEMP:
<80% non-condensing
0-50°C ambient
5.6 NOTES ON SERIAL DATA THROUGHPUT
The maximum serial baud rate of 921KBits/sec does not imply that
the maximum sustained throughput rate of the serial port will be as
high. The actual throughput rate that can be achieved depends on
many factors including the host PC speed, the serial data source’s
data block size and whether the block are “back-to-back”, whether
the interrupt in use on the host is being shared by other devices
leading to increased latency etc.
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As a simple rule of thumb, using the standard serial drivers on a fast
PC will allow throughput rates of 400-600KBits/sec although these
rates can’t be guaranteed and will be application specific.
5.7 BAUD RATE SETTINGS
The table below illustrates the common baud rate values available
for each of the baud rate multiplier switch positions:
HOST SETTING
300
SWITCH = x1
300
SWITCH = x8
2400
1200
1200
9600
2400
2400
19200
4800
4800
38400
9600
9600
76800
19200
38400
57600
115200
19200
38400
57600
115200
153600
307200
460800
921600
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