BX400ii Interposer Board
User’s Manual
March 29, 2000
Order Number: 273224-003
BX400ii Interposer Board
Contents
Introduction.........................................................................................................................5
Key Terms .............................................................................................................5
Related Documents...............................................................................................5
Low Power Pentium II Processor Module .............................................................6
BX400ii Interposer Board Features .......................................................................6
BX400ii Interposer Board Dimensions ..................................................................8
Getting Started ...................................................................................................................9
Unpacking Instructions ..........................................................................................9
Installation .............................................................................................................9
2.2.1 BX400ii.....................................................................................................9
2.2.2 Emulator/Logic Analyzer ........................................................................10
Hardware Reference ........................................................................................................11
Jumper Settings ..................................................................................................11
3.2.1 Voltage Regulator Settings.....................................................................11
Test Points ..........................................................................................................12
Figures
BX400ii Keepout Space Requirements.................................................................8
BX400ii Connector Clearance ...............................................................................8
BX400ii Interposer Board Stack Mounting ..........................................................10
BX400ii Board Layout Drawing ...........................................................................13
Tables
Related Documents...............................................................................................5
Vendor Reference .................................................................................................5
Voltage Regulator Jumper Settings.....................................................................11
User’s Manual
3
1.0
Introduction
This document introduces the BX400ii Interposer Board and provides installation instructions.
®
®
The BX400ii Interposer Board with the Intel Mobile Pentium II Processor emulates the
®
®
functionality of the Intel Pentium II Processor Mobile Module to provide a bus interconnect for
emulation and logic analysis tools. This board is used for Intel Pentium II Processor Mobile
Module system designs.
Note: Due to additional signal loading and trace lengths, the BX400ii Interposer Board may not function
in all system designs.
1.1
1.2
Key Terms
®
®
LPM refers to the Intel Low Power Pentium II Processor module. This module is identical to
the Intel Pentium II Processor Mobile Module Connector (MMC-2). A complete description of this
module is located in the Intel Pentium II Processor Mobile Module: Mobile Module Connector
2 (MMC-2) datasheet (http://developer.intel.com/design/mobile/datashts).
®
®
82443BX refers to the Intel 82443BX Host Bridge Controller.
Related Documents
Table 1. Related Documents
Document
Order #
Intel® Pentium® II Processor Mobile Module: Mobile Module Connector 2 (MMC-2) datasheet
Intel® Pentium® II Processor at 233 MHz, 266 MHz and 300 MHz datasheet
Mobile Pentium® II Processor Specification Update
243668
243669
243887
290633
Intel® 440BX AGPset: 82443BX Host Bridge/Controller datasheet
Table 2. Vendor Reference†
Vendor Name
Contact Information
(714) 731-1661
American Arium
(800) 426 3925
Applied Microsystems Corporation
Hewlet Packard
(800) 452-4844
(800) 886-7333
Microtek International
(800) TEK-WIDE
Tekt ronix
(800) 404-0204
Ironwood Electronics (for adapters only)
†
Intel does not endorse or recommend third-party vendors.
BX400ii Interposer Board User’s Manual
5
Introduction
®
1.3
Pentium II Processor Mobile Module: Mobile Module
Connector 2 or Low Power Pentium II Processor Module
The Pentium II Processor Mobile Module: Mobile Module Connector 2 (400-pin MMC-2) or Low
Power Pentium II Processor Module (LPM) is a small, highly integrated assembly containing an
Intel Pentium II processor and its immediate system-level support. Specifically, the processor
module contains a power regulator, level 2 (L2) cache memory, and the core logic required to
bridge the processor to standard system buses. The module interfaces electrically to its host system
via a 3.3 V PCI bus, a 3.3 V memory bus and some Intel 82443BX Host Bridge Controller signals.
1.4
BX400ii Interposer Board Features
The BX4000ii Interposer Board contains the same system level support provided by the Pentium II
processor mobile module with a few exceptions.
• It includes a 240-pin connector for the Mobile Pentium II processor in mini-cartridge
• It provides two additional interfaces for debug tools:
— 30-pin debug port connector
— 190-pin processor system bus connector
6
BX400ii Interposer Board User’s Manual
Introduction
Figure 1. Top View of BX400ii Interposer Board Assembly
Mobile Pentium® II Processor in Minicartridge
30-Pin Debug Port Connector
190-Pin
System Bus
Connector
82443BX Host
Bridge Controller
Dashed line
indicates
400-Pin LPM
Connector
on underside
A6366-01
The same 400-pin system interface is still provided to allow connection to the target system. In
addition, a top side 240-pin connection is added for the Intel Mobile Pentium II Processor in mini-
cartridge. This processor, plus the BX400ii Interposer Board, provides compatible functionality
with the Pentium II processor Mobile Module.
The 30-pin debug port connector connects to the run control cable, or debug port, of the emulator
or logic analyzer. The 190-pin processor system bus connector connects directly to the emulator or
logic analyzer bus preprocessor. This connection allows for full bus trace and triggering. Contact
your emulator or logic analyzer vendor for specific tool capabilities. See Table 2 for a reference list
of vendors.
BX400ii Interposer Board User’s Manual
7
Introduction
1.5
BX400ii Interposer Board Dimensions
This section provides the physical dimensions for the BX400ii Interposer Board.
compared to the Low Power Module (LPM).
Figure 2. BX400ii Keepout Space Requirements
190-Pin Connector
Top View
BX-400ii
LPM
400-Pin Connector on the LPM
(Low Power Module)
2.5"
4"
A6372-01
Figure 3. BX400ii Connector Clearance
Side View
BX400ii Interposer Board
Clearance ~ 3 mm
OEM System Motherboard
A6869-01
The clearance between the BX400ii Interposer Board and the OEM system board is approximately
approximately 8 mm of additional clearance. Contact your Intel Field Sales Representative or a
tools vendor to request a socket saver.
8
BX400ii Interposer Board User’s Manual
Getting Started
2.0
Getting Started
The BX400ii Interposer Board requires a Mobile Pentium II Processor in mini-cartridge at a
frequency corresponding to the mobile module that is being emulated.
2.1
Unpacking Instructions
Carefully unpack the contents of the box and verify that all of the items in the packing list are
present. If items are missing or damaged, contact Intel or your authorized distributor.
2.1.1
Important Static Electricity Precautions
Take appropriate measures to prevent static electricity damage when removing the Interposer
Board from the antistatic bag. This board should only be handled in a static free area.
• Before handling any components or touching any other system units, discharge your body’s
static electric charge by touching a grounded surface.
• Wear a grounded wrist strap if one is available.
• Remove the board from the antistatic bag only when you are ready to install it.
• Do not lay the board or other components on the bag, only the insides are antistatic.
• When handling the board or other components, hold them by their edges or metal mounting
brackets.
• Never slide the board or other components over any surface.
2.2
Installation
Pay careful attention when installing the 400-pin high density connectors. Successful module
insertion and extraction consists of 3 major elements:
1. Alignment - Rough alignment is required before applying forces to reduce the possibility of
contact damage. Fine alignment is provided by the connector housing. Rough alignment is
achieved by visually aligning the connector housing and mounting holes.
2. Insertion - Insertion forces must be applied only on the board surface. Do not apply force to
any component. Best results and lower insertion forces are achieved when using a 2-step
rolling or "zippering" process. Align the connector length wise from one end of the connector,
roll the connector on until the board/module/mini-cartridge is parallel, and then apply force
straight down to secure the connector.
3. Extraction - Extraction forces must be applied while securely controlling the board. Rolling
out the connector opposite of the insertion process is recommended. Twisting the board or
excessively tilting it while removing can result in connector damage.
2.2.1
BX400ii
The BX400ii Interposer Board, with the processor securely mounted on top of the it, replaces the
mobile module in the system. First, remove the mobile module and its associated mounting
hardware, then carefully install the BX400ii Interposer Board on the 400-pin connector.
BX400ii Interposer Board User’s Manual
9
Getting Started
Note: Please consider the thermal requirements of your Mobile Pentium II processor and ensure that the
proper thermal management solution is in place.
2.2.2
Emulator/Logic Analyzer
Connect the 30-pin cable from the emulator or logic analyzer to the debug port connector on the
BX400ii Interposer Board. If you have a debug port designed into your system, only the debug port
on the BX400ii Interposer Board will function. The port on the system board will not function with
the BX400ii in place.
Connect the probe from the Mobile Pentium II processor logic analyzer to the 190-pin connector.
Contact your logic analyzer vendor for specific details. A list of some third-party vendors is
Figure 4. BX400ii Interposer Board Stack Mounting
Mobile Pentium® II Processor
in Mini-cartidge
190-Pin System Bus Connector
BX400ii Interposer Board
30-Pin Debug Port
Connector
240-Pin Connector
OEM System
Board
PCI Slot
(optional)
400-Pin LPM Connector
APG Slot
(optional)
A6367-01
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BX400ii Interposer Board User’s Manual
Hardware Reference
3.0
Hardware Reference
3.1
Connector Definitions
Changes to the hardware are not required for the BX400ii Interposer Board. If necessary, you can
®
refer to the Mobile Pentium II Processor at 233 MHz, 266 MHz and 300 MHz datasheet (order
number 243669), Intel® Pentium® II Processor Mobile Module: Mobile Module Connector 2
(MMC-2) datasheet (order number 243668) for connector definitions.
3.2
Jumper Settings
Changes to the jumper settings are not required for normal operation of the BX400ii Interposer
Board.
3.2.1
Voltage Regulator Settings
The voltage setting for the V core is determined by the VID pins, which are signal outputs of the
CC
Mobile Pentium II processor. Jumper settings are available to vary the V core voltage, however,
CC
these should only be used for validation/debug purposes. For reference purposes, the jumper
Table 3. Voltage Regulator Jumper Settings
JP1
JP2
JP3
JP4
+VCC_CPU
NS
NS
NS
NS
NS
NS
NS
NS
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
NS
NS
NS
NS
1-2
1-2
1-2
1-2
NS
NS
NS
NS
1-2
1-2
1-2
1-2
NS
NS
1-2
1-2
NS
NS
1-2
1-2
NS
NS
1-2
1-2
NS
NS
1-2
1-2
NS
1-2
NS
1-2
NS
1-2
NS
1-2
NS
1-2
NS
1-2
NS
1-2
NS
1-2
1.25 V
1.30 V
1.35 V
1.40 V
1.45 V
1.50 V
1.55 V
1.60 V
1.65 V
1.70 V
1.75 V
1.80 V
1.85 V
1.90 V
1.95 V
2.00 V
NOTE: 1-2 = Populate Jumper, NS = No Shunt.
BX400ii Interposer Board User’s Manual
11
Hardware Reference
3.3
Test Points
Table 4. Power Measurement Header Descriptions
Effective
Resistance (Ω)
Header
Voltage Rail
Resistor
Description
P1
P2
+VGTLREF_BX (5/9 VTT)
+V3_AGPREF (3.3V)
R28
R45
0.01
0.01
GTL reference voltage for 440BX
3.3 V rail for 440BX AGPset:
82443BX reference
P5, P6
P7
+V3_BX (3.3V)
+V3_PU (3.3V)
R57
R58
0.01
0.01
3.3 V rail for BX core
3.3 V rail for pull-ups
3.3 V rail for voltage regulator
subsystems
P8
+V3_VR (3.3V)
+VTT MPII (1.6V)
+ VTT_BX
R59
R10, R117
R90
0.01
0.0005
0.01
P15
P16
Core Processor Voltage
Low Power GTL +voltage rail for
443BX Host Bus interface pins
2.5V used for clock on system
electronics and pullup voltage for
CPU cmos compatibility signals
P17
P19
P20
P21
+V CPUIO (2.5V)
+VTT_GTL_PU
+ V5_VTT (5V)
R97
R101
R75
0.01
0.01
1.0
Low Power GTL +voltage rail for all
GTL termination resistors and
443BX GTL reference
5 V input to Voltage Regulator
subsystem generating core VTT to
the CPU
Primary DC system power supply
[4.75 V-21 V] from system
electronics board
+ VIN (4.75V - 21V)
R17
0.025
12
BX400ii Interposer Board User’s Manual
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