SBS Technologies V5C User manual

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V5C
Technical Manual
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V5C
Pentium PC/AT Compatible VMEbus Single Board Computer
Technical Manual
Copyright © 2002 by SBS Technologies Inc.
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V5C Technical Manual
Document Number A-943-MN-04304-01
Part Number 9100-31-045-01
This manual applies to the V5C Embedded PC, revision A2 and above, until superceded.
Revision Date by Comments
05-09-2001 jev Initial Release
09-19-2001 jev Updated logo, some typo’s and Power info in specifications.
10-11-2001 jev Changed Bit 0 & 4 under Reset Control Register on Page 6-3.
11-06-2002 jev Correction to Keyboard/Mouse connector drawings on Page 3-6
The information contained within this document has been carefully checked and is believed to be
entirely reliable and consistent with the product that it describes. However, no responsibility is
assumed for inaccuracies. SBS Technologies Inc. assumes no liability due to the application or use of
any product or circuit described herein. SBS Technologies Inc. reserves the right to make changes to
any product and product documentation in an effort to improve performance, reliability, or design.
Furthermore, the information contained herein is of a proprietary nature and is not to be reproduced
without prior written consent of SBS Technologies Inc.
Intel, Pentium, Celeron and Pentium III are trademarks of Intel Corporation.
IBM, PC/AT, and AT are trademarks of International Business Machines Corporation.
MS-DOS is a trademark of Microsoft Corporation.
Tundra and Universe are trademarks of Tundra Semiconductor, Inc.
This manual uses some generally accepted conventions for clarity and accuracy. These include:
• The use of an ‘H’ suffix before a number indicates hexadecimal (base sixteen) notation.
• The use of a ‘-’ (minus) suffix to a signal name indicates an active low signal. The signal is either
true when it is at a logic zero level or the signal initiates actions on a high-to-low transition.
• Text in Courier Font indicates a command entry or output from an SBS embedded PC product
using its built-in character set.
This manual is designed to provide information regarding the general use and application of the V5C
Embedded PC, as well as detail the hardware design. Some software programming information is also
provided in Chapters 6 and 7 of this manual.
ii
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Contents
Chapter 1: Introduction 1-1
Chapter Scope 1-1
PC99 Design Guide Compatibility Features 1-1
VMEbus VME64 Compatibility Features 1-3
Chapter 2: Unpacking, Inspection, and Initial Operation 2-1
Chapter Scope 2-1
Electrostatic Discharge Notice 2-1
Unpacking and Handling 2-2
Initial Inspection 2-2
Included Items 2-2
Minimum System Requirements 2-3
Initial Power-On Operation 2-4
Chapter 3: Installation and Interfacing 3-1
Chapter Scope 3-1
Installing the V5C 3-1
Installation Requirements 3-1
Interfacing the V5C to External Devices 3-5
Keyboard/Mouse Interface 3-6
Serial Ports 3-7
Extended COM-2 Functionality 3-7
Parallel Port 3-8
Video Interface 3-9
Ethernet Interface 3-9
USB Ports 3-10
Chapter 4: Booting and Operation 4-1
Chapter Scope 4-1
In Case of Problems 4-1
Mode Switch 4-1
Setup Key Commands 4-2
Main Setup Menu 4-2
Standard CMOS Setup 4-3
BIOS features Setup 4-5
PnP/PCI Configuration 4-7
Integrated Peripherals 4-8
Chapter 5: Board Resources 5-1
Chapter Scope 5-1
V5C Options 5-1
Front Panel LEDs 5-2
PC Interrupts 5-4
DMA Channels 5-4
V5C Registers 5-4
V5C Memory Map 5-5
V5C Block Diagram 5-6
Contents iii
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V5C Technical Manual
iv
Chapter 6: PC/AT Devices Programming 6-1
Chapter Scope 6-1
PC/AT Compatible ROM BIOS 6-1
Serial Communications Interface 6-2
Parallel Port 6-2
Keyboard/Mouse Port 6-2
Real Time Clock 6-2
Non-Volatile RAM 6-3
Reset Control Register 6-3
BIOS Control Register 6-4
User Register 6-5
Serial EEPROM Register 6-5
Serial EEPROM 6-6
Byte Swapping Control Register 6-6
PLD Revision Register 6-7
Board Status Register 6-7
Board Status Register 2 6-8
Intel Dual HiQVideo Accelerator Engine 6-8
Chapter 7: Byte Swapping 7-1
Byte Swapping Modes 7-1
Mode M32 7-1
Mode I32 7-1
Mode I16 7-2
Byte Swapping Mode by Control Register 7-2
Chapter 8: Specifications 8-1
Specifications 8-1
Chapter 9: Support, Service, and Warranty 9-1
Chapter Scope 9-1
Warranty Statement 9-1
If You Have a Problem with an SBS Product 9-1
Product Repairs 9-2
Tables
Table 2-1: Included Items 2-2
Table 3-1: VME P1 Power Pins 3-1
Table 3-2: VME P2 Power Pins 3-2
Table 3-3: V5C P1 Signals 3-3
Table 3-4: V5C P2 Signals 3-5
Table 3-5: Keyboard/Mouse Interface Signals 3-6
Table 3-6: COM-1 and COM-2 (RS-232) Pin Assignments 3-7
Table 3-7: COM-2 RS-422 Pin Assignments 3-8
Table 3-8: COM-2 RS-485 Pin Assignments 3-8
Table 3-9: Parallel Port Signals 3-9
Table 3-10: Ethernet 10BaseT Pin Assignments 3-9
Table 5-1: PC Interrupt Allocation 5-4
Table 5-2: DMA Channel Allocation 5-4
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Figures
Figure 2-1: System BIOS Banner 2-4
Figure 3-1: Keyboard/Mouse Interface 3-6
Figure 3-2: COM Port 3-7
Figure 3-3: Parallel Port 3-8
Figure 5-1: V5C Memory Map 5-5
Figure 5-2: V5C I/O Map 5-5
Figure 5-3: V5C Block Diagram 5-6
Appendix A: VME Address Modifier Codes A-1
Contents v
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V5C Technical Manual
vi
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This chapter describes the features, capabilities and compatibilities of the V5C.
The V5C Embedded PC is compatible with software written compliant with the
PC99 Design Guide. All of the functions necessary for operation as a Pentium
based computer are included. There are also a number of features provided on
board which usually require plug-in cards in a desktop Pentium computer. The
following paragraphs describe features which relate to the V5C PC99 functionality.
Intel Pentium III Microprocessors
The V5C is available from the factory with an Intel Pentium III or Celeron processor
at a variety of speeds. Celeron processors of 450MHz and up, and Pentium III
processors of 450MHz and up (as available) are currently supported. The
Celeron has a 66MHz front side bus, and the Pentium III has a 100MHz front
side bus. Each processor will run standard software written in compliance with
the PC99 Design Guide. They provide the capability of running 8-bit (8086),
16-bit (80286), as well as full 32-bit (80386) software & operating systems, and
support MMX technology. This choice of processors allows you to select a V5C
with the performance best suited to your application.
Introduction 1-1
Chapter Scope
PC99 Design Guide
Compatibility Features
CHAPTER 1 Introduction
VMEbus P1 VMEbus P2
Row A & C = Floppy/Harddrive Interface
Row D & Z = SCSI Wide, IDE, USB Port 1
PCI Expansion
Dual
Ethernet
Connectors
Video
COM1 & COM2
Serial Ports
Parallel
Port
Reset
Keyboard/
Mouse
LED Displays
SODIMM
Memory
Slot
Compact
Flash Disk
USB
Port 0
FDOCk
CPU
Under Fan
& Heat sink
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V5C Technical Manual
1-2
Compatible ROM BIOS
The V5C uses a ROM BIOS produced by AWARD to ensure that the BIOS is
compatible with PC99 and existing Pentium systems without infringing on copyrights.
The BIOS provides low-level machine dependent software functions, relieving
the operating system from dealing with hardware directly. A substantial number
of software programs use BIOS calls rather than Operating System calls, so it is
important to have a BIOS that works exactly like the original PC99 compatible BIOS.
Compatible I/O
The V5C incorporates the I/O capabilities of a PC99 compatible system by
using the ALi 1543C Southbridge chip with its built-in super I/O controller.
These capabilities include two RS-232 serial communications ports, a parallel
printer port, and a keyboard /mouse port. The COM-2 serial port is enhanced for
selectable RS-232, RS-422 or RS-485 operation.
System Memory
The V5C default onboard memory is 256MB SDRAM, but can be customized to
512MB. There is a standard 144-pin SODIMM expansion socket onboard for
memory upgrade. An SODIMM with a minimun PC100 rating, and maximum
of 512MB can be accomodated. The socket “foot-print” size is expanded from
the industry standard to allow 2 in. deep modules.
Compact Flash
The V5C has an on-board Compact Flash Drive slot, compatible with standard units
such as Sandisk© ATA Flashdrive. Currently available memory sizes are supported.
Floppy Controller
The ALI 1543C Southbridge chip also includes a fully PC99 compatible floppy
disk controller onboard the V5C. It can control one 3.5” 1.44M floppy disk drive.
The floppy control signals are provided through the P2 connector for simple
connection to an SBS Embedded Computers VME-6200 series disk drive mod-
ule, or to an external disk drive setup using SBS Embedded Computers’ VME-
TB21 transition board, or VME-TB51 for VME64 5-row expansion.
Primary Integrated Drive Electronics (IDE) Controller
The onboard Enhanced Integrated Drive Electronics (EIDE) controller provided
by the ALi chip set is an industry standard IDE interface for disk drives or other
IDE peripherals. IDE control signals are provided through the P2 connector for
easy connection to VME-6200 series disk drive modules, or to an external disk
drive setup using a VME-TB21/VMETB-51.
Secondary Integrated Drive Electronics (IDE) Controller
The secondary IDE can operate from a TB51 with 5-row P2, or is shared with
on board Compact Flash Interface. If Compact Flash IDE is used, the second IDE
drive must be a slave device.
Small Computer Systems Interface (SCSI) Controller
The Symbios 53C875E Small Computer Systems Interface (SCSI) controller
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provides an Ultra Fast 40 SCSI compatible interface for hard disk drives or
other SCSI peripheral devices. The SCSI control signals are provide through the
P2 connector for painless connection to a VME-6200 series disk drive module, or
to an external disk drive setup using a VME-TB21. This interface can be either
8-bit (6200, TB21) or 16-bit (TB51 only).
Video Accelerator
The V5C uses the 69030 Dual HiQVideo Accelerator, with 4 Megabytes of
embedded SDRAM memory. The 69030 is designed to support high perfor-
mance graphics and acceleration for all supported display resolutions, display
types, and color modes (up to 1600 x 1200, @ 60Hz refresh). A standard 15-pin
VGA connector is provided through the front panel for attaching VGA and
SVGA capable monitors.
On-Board Ethernet
The V5C incorporates dual high-performance Intel 82559 Ethernet controllers
on-board. The 82559 is a fully IEEE 802.3 compatible, low power ethernet con-
troller in a small BGA package. The V5C comes with two Twisted-Pair
(10/100BaseT) physical interfaces provided through dual RJ45 connectors
mounted on the front panel. (100BaseT is indicated by a yellow LED.)
PCI Expansion
The V5C provides a primary bus PCI connect to the SBS Embedded Computers
TPMCC carrier. Since the V5C does not contain a PCI Bridge, a 21150 PCI
Bridge is included on the TPMCC for using PCI Mezzanine Cards (PMC).
To meet the VME64 ANSI/VITA 1-1994 standard, the V5C uses the Tundra
Universe IIB VMEbus Interface chip. The VMEbus interface of the V5C is
high-speed and very flexible, yet is easy for software to utilize.
A complete technical manual for the Tundra Universe IIB chip can be down-
loaded via the Internet from Tundra Semiconductor Corporation’s website at
http://www.tundra.com.
Introduction 1-3
VMEbus VME64
Compatibility Features
Dual
Ethernet
Controllers
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V5C Technical Manual
1-4
Full Universe IIB VMEbus Master/Slave Operation
The V5C was designed to provide both VMEbus Master and VMEbus Slave
capability. As such, it can initiate data transfers over the VMEbus and receive
data from other VMEbus Masters. A number of facilities have been provided to
enhance VMEbus Master and Slave operation.
The VMEbus interface provides 8 master and 8 slave VMEbus access paths. A
path configured as a slave allows access to the V5C System DRAM and other
local resources from the VMEbus. The interface can be configured to allow all,
part, or none of the local address space to be accessible, allowing local data to
be configured as inaccessible from the VMEbus.
An access path configured as a master allows the V5C to perform data transfers
on the VMEbus. A path can be configured to appear anywhere in available local
address space, and map anywhere on the VMEbus, providing for a very flexible
interface.
Byte Swapping Capability
The V5C features hardware implemented byte swapping. This allows for faster data
transfers than possible using software implemented byte swapping. Supported
modes of byte swapping are M32(no swapping), I32(Intel swapping), and I16(D16
byte swap). These modes can be specified for both master and slave transfers.
VMEbus System Controller Capability
The V5C can be software configured as a VMEbus System Controller, independent
of VMEbus Master or Slave operation. This is especially important if the V5C is
going to be the only CPU card in the VMEbus system. Also, the V5C can
automatically detect if it is in the VME slot one and turn on the System Controller
function.
Interrupter and Interrupt Handler
The Universe IIB chip provides a flexible scheme to map interrupts to either the
PCI bus or the VMEbus. The Universe IIB Interrupter provides an 8-bit STA-
TUS/ID to a VMEbus interrupt handler during the IACK cycle, and optionally
generates an internal interrupt to signal that the interrupt vector has been provid-
ed. A VMEbus interrupt can trigger the Universe IIB to generate a normal
VMEbus IACK cycle. When the IACK cycle is complete, the Universe IIB
releases the VMEbus and the interrupt vector is received by the PCI resource
servicing the interrupt output.
Universe
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This chapter covers the suggested inspection, preparation considerations and
background information necessary prior to using the V5C. Unpacking, initial
inspection, and first-time operation of the V5C are also covered. Following the
procedures given in this chapter is recommended, since these will verify proper
operation, both after shipping and before the product is integrated into your
VMEbus system.
Proper handling of the V5C is critical to ensure proper operation and long-term
reliability. When unpacking the board, and whenever handling it thereafter, be
sure to hold the V5C by the front panel or the card ejectors as shown in the
drawing on the left. Do not hold the V5C by the circuit card edges, the heat
sink, or the VMEbus connectors.
The discharge of static electricity, known as ElectroStatic Discharge or ESD, is
a major cause of electronic component failure. The V5C has been packaged in a
static-safe bag which protects the board from ESD while the board is in the bag.
Before removing the V5C or any other electronic product from its static-safe
bag, be prepared to handle it in a static-safe environment.
You should wear a properly-functioning antistatic strap and ensure you are fully
grounded. Any surface upon which you place the unprotected V5C should be
static-safe, usually facilitated by the use of antistatic mats. From the time the
board is removed from the antistatic bag until it is in its card cage and functioning
properly, extreme care should be taken to avoid “zapping” the board with ESD.
You should be aware that you could “zap” the board without your knowing it; a
small discharge, imperceptible to the eye and touch, can often be enough to
damage electronic components. Extra caution should be taken in cold and dry
weather when static easily builds up.
Unpacking, Inspection, and Initial Operation 2-1
Chapter Scope
Electrostatic Discharge
Notice
CHAPTER 2 Unpacking, Inspection,
and Initial Operation
ATTENTION
Static Sensitive Devices
Handle only at Static Safe Work Stations
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V5C Technical Manual
2-2
Although the V5C is carefully packaged against the rigors of shipping, it is still
possible that shipping damage can occur. Careful inspection of the shipping carton
should reveal some information about how the package was handled by the
shipping service. If evidence of damage or rough handling is found, you should
notify the shipping service and SBS Embedded Computers as soon as possible.
Only after ensuring that both you and the surrounding area are protected from
ESD, carefully remove the V5C from the shipping carton by grasping it by the
front panel and the VME connectors. Place the board, in its anti-static bag, flat
down on a suitable surface. You may then remove the board from the anti-static
bag by tearing the ESD warning labels.
After unpacking the V5C, you should inspect it for visible damage that could
have occurred during shipping or unpacking. If damage is observed (usually in
the form of bent component leads or loose socketed components), contact SBS
Embedded Computers for additional instructions. Depending on the severity of
the damage, it may need to be returned to the factory for repair. DO NOT apply
power to the board if it has visible damage. Doing so may cause further, possibly
irreparable damage, as well as introduce a fire or shock hazard. Since the V5C
incorporates a number of socketed components, including the CPU, memory, Etc.,
these should be inspected to make sure they are seated fully in their sockets.
Table 2-1 lists accessories which are included with each V5C. You may want to
make sure that you have the items shown in the event that you need them during
installation or configuration.
Initial Inspection
Included Items
Qty. Item Purpose
1 Cable Adapter Custom PC Keyboard/Mouse Adapter
Table 2-1 Included Items
Static-Safe Bag
V5C
Shock Absorbent
Packing
Packing
w/Cutout
Shock Absorbent
Packing
Retain all packing materials in case of future need.
Unpacking and Handling
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As shipped, the V5C has been thoroughly tested and burned-in, and is nearly
ready for use in your VMEbus system. In order to verify V5C operation for the
first time, it is suggested that you only configure a minimal system. It is not
necessary to have disk drives or other accessories connected in order to perform
the V5C confidence tests. The following items are all that are required:
VMEbus Backplane and Power Supply
You will need a standard VMEbus P1 or combination P1/P2 backplane wired
into a regulated power supply capable of providing stable low noise +5 volt,
+12 volt, and -12 volt sources. Make sure that the supply is capable of meeting
the total power requirements of the V5C. Please refer to chapter 8 for the V5C
Specifications. Initially, you may plug the V5C into any available 6U slot of
your VMEbus backplane. Later you will need to select the proper slot for your
particular application. Make certain the power supply is NOT turned ON when
the V5C is plugged into your backplane.
Never install or remove any VMEbus card while power is applied unless it is
certified for hot-insertion (the V5C is not).
Keyboard/Mouse connector
You should have a PC99 compatible keyboard for initial system operation.
Depending on your application, this keyboard may be a standard full-travel
keyboard, or one which utilizes membrane switches for harsh environments.
The miniature DIN keyboard connector is located on the front panel and is
directly compatible with existing PC99 compliant keyboards. If your keyboard
has the normal IBM PC-type keyboard connector you will need to use the supplied
cable adapter for proper mouse operation.
NOTE:
The V5C has a single connector defined for both keyboard and mouse. The
definition is such that without an SBS adapter, only the keyboard is available. With
the SBS adapter, keyboard and mouse port access are provided.
Unpacking, Inspection, and Initial Operation 2-3
Minimum System
Requirements
Typical VMEbus backplane Assembly
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V5C Technical Manual
2-4
Plug your adapter into the keyed PS2 connector on the front panel, then plug the
keyboard and mouse into the adapter before power is applied. Plugging and
unplugging the keyboard while power is applied is not recommended and can
cause a software failure or damage to the keyboard and/or on-board circuitry.
Video Monitor
Any VGA-compatible video monitor can be used initially for display output.
The 15-pin front panel connector is fully compatible with the VGA standard
connector and pinout. Plug your video monitor into the connector labeled ‘VIDEO’.
After making sure that you have installed the V5C properly into your VMEbus
backplane, apply power to your video monitor and then the VMEbus supply.
When the board is completely reset, the processor should begin executing initial
BIOS-resident routines.
After a few seconds, the V5C System BIOS banner will be displayed similar to
that shown in Figure 2-1.
If you have seen all the messages to this point, you can be confident that the
board is running properly and is ready to be installed and setup for your application.
You may now shut off power to the VMEbus chassis and begin board setup and
configuration as described in Chapter 3.
If the board did not perform as described above, some damage may have
occurred in shipping or the board is not installed or setup properly. Contact SBS
technical support as described in Chapter 9 for further instructions.
Initial Power-On Operation
Figure 2-1 System BIOS Banner
Award Modular BIOS
Copyright (C) 1984-98, Award Software, Inc.
SBS Embedded Computers - V5C ver. 0.9 R.C. - 11/17/2000
INTEL Pentium III - 600 CPU found
Memory Test: 512,000k OK
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This chapter covers installing the V5C in a VMEbus system and interfacing the
V5C to external devices and peripherals.
The V5C is designed to conform to the VMEbus physical specifications for a
6U×4HP dual eurocard (dual-height, single-width). It can be plugged directly
into any standard card cage designed for these types of cards. Installation of the
V5C is relatively simple as described below. The V5C with Pentium III requires
full P1 and P2 Backplane installation to prevent +5V power starvation.
The following paragraphs describe requirements which your VMEbus system
must meet in order to install and successfully integrate the V5C. If you are
uncertain about any requirements, be sure to contact SBS Embedded Computers
Technical Support before installing your V5C.
VMEbus Power Requirements
Power is supplied to the V5C via the VMEbus P1 connector as shown in Table
3-1 below.
Installation and Interfacing 3-1
Chapter Scope
Installing the V5C
Installation Requirements
CHAPTER 3 Installation and Interfacing
Signal Location on VMEbus P1
+5 Volts Row a, pin 32
Row b; pin 32
Row c; pin 32
Ground Row a; pins 9, 11, 15,17,19
Row b; pins 20,23
Row c; pin 9
+12 Volts Row c; pin 31
-12 Volts Row a; pin 31
Table 3-1 VMEbus P1 Power Pins
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V5C Technical Manual
3-2
If you are using the V5C in a full 32-bit address system, additional power and
ground pins are connected according to VMEbus specification for P2 row b as
shown in Table 3-2.
The actual electrical requirements of the V5C are defined in the Specifications
section of chapter 8.
VMEbus Backplane Requirements
Not recommended for P1 only with any Pentium III design. The V5C with Pen-
tium III requires full P1 and P2 Backplane installation to prevent +5V power
starvation.
VMEbus P1 Connector
The V5C has been designed to directly interface with any VMEbus P1 backplane
conforming to the Rev. C.1 specification. Table 3-3 summarizes the VMEbus P1
signals used.
Signal Location on VMEbus P2
+5 Volts Row b; pins 1,13,32
GND Row b; pins 2,12,22,31
Table 3-2 VMEbus P2 Power Pins
WARNING:
The P2 connector of the V5C has the a and c rows defined by SBS as the
VMEbus specification permits. However, other boards on the VMEbus may
also define these rows. Damage can result to the V5C or other boards if the
P2 a,c,d and z row signals are bussed between boards which are not compatible.
P1
P2
V5C
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VMEbus P1 Daisy Chain Signals
The VMEbus specification defines two signal paths which are connected in
daisy chain fashion, meaning that they are intercepted at each card position
before being passed on the the adjacent card. These signals are associated with
bus acquisition and interrupt acknowledgement. Before plugging the V5C into
the P1 backplane, you should make sure that the backplane slot is configured
appropriately for these signals.
Installation and Interfacing 3-3
Pin Row z Signal Row a Signal Row b Signal Row c Signal Row d Signal
1 RSRVD33 D00, Data bit 0 BBSY- D08, Data bit 8 RSRVD1
2 GND9 D01, Data bit 1 BCLR- D09, Data bit 9 RSRVD2
3 RSRVD34 D02, Data bit 2 ACFAIL- D10, Data bit 10 RSRVD3
4 GND10 D03, Data bit 3 BG0IN- D11, Data bit 11 RSRVD4
5 RSRVD35 D04, Data bit 4 BG0OUT- D12, Data bit 12 RSRVD5
6 GND11 D05, Data bit 5 BG1IN- D13, Data bit 13 RSRVD6
7 RSRVD36 D06, Data bit 6 BG1OUT- D14, Data bit 14 RSRVD7
8 GND12 D07, Data bit 7 BG2IN- D15, Data bit 15 RSRVD8
9 RSRVD37 GND1 BG2OUT- GND8 RSRVD9
10 GND13 SYSCLK BG3IN- SYSFAIL- RSRVD10
11 RSRVD38 GND2 BG3OUT- BERR- RSRVD11
12 GND14 DS1- BR0- SYSRESET- RSRVD12
13 RSRVD39 DS0- BR1- LWORD- RSRVD13
14 GND15 WRITE- BR2- AM5 RSRVD14
15 RSRVD40 GND3 BR3- A23 RSRVD15
16 GND16 DTACK- AM0 A22 RSRVD16
17 RSRVD41 GND4 AM1 A21 RSRVD17
18 GND17 AS- AM2 A20 RSRVD18
19 RSRVD42 GND5 AM3 A19 RSRVD19
20 GND18 IACK- GND6 A18 RSRVD20
21 RSRVD43 IACKIN- Not used A17 RSRVD21
22 GND19 IACKOUT- Not used A16 RSRVD22
23 RSRVD44 AM4 GND7 A15 RSRVD23
24 GND20 A07 IRQ7- A14 RSRVD24
25 RSRVD45 A06 IRQ6- A13 RSRVD25
26 GND21 A05 IRQ5- A12 RSRVD26
27 RSRVD46 A04 IRQ4- A11 RSRVD27
28 GND22 A03 IRQ3- A10 RSRVD28
29 RSRVD47 A02 IRQ2- A09 RSRVD29
30 GND23 A01 IRQ1- A08 RSRVD30
31 RSRVD48 -12V +5VSTDBY +12V RSRVD31
32 GND24 +5V1 +5V2 +5V3 RSRVD32
Table 3-3 V5C P1 Signals
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