SBS Technologies CR7 Instructions for use

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CR7
CeleronTM / Pentium®III
PC/AT Compatible 6U CompactPCI®
Single Board Computer
Hardware User’s Manual
Revision 1.3
Copyright © 1999 by SBS Technologies
www.sbs.com

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 2 of 51
Revision By Date Chapter Comments
V0 prel. PS 05/04/1999 First Draft
V1 prel. PS 06/14/1999 Second Draft
V1 PS 09/02/1999 First Release
1.2 PS 04/26/2001 supports now also Board Version 3.x
1.1 new CPUs added
1.3 Power consumption updated
1.2 Order information of board types removed
2.2 Placement plan of actual version V3 inserted
1.1/2.7 all LVDS notes removed
2.7.2 IO connector L1_xx and L2_xx exchanged
2.7.7 Parallel connector pin number of 'D1' corrected
3.10.1 Temperature sensor MAX1617A added
1.3 GB 07/23/2002 All Manual changed to new style
MF
For Immediate Contact
Europe USA & Rest of World
Sales:
SBS Technologies GmbH & Co.KG SBS Technologies, Inc.
Memminger Str. 14 6301 Chapel Hill Road
86159 Augsburg Raleigh, NC 27607
Germany USA
Tel.: [phone] Phone [phone]
Fax.: [phone] Fax [phone]
Email [e-mail] Email [e-mail]
Technical Support
Tel.: [phone] Phone [phone]
Fax.: [phone] Fax [phone]
Email [e-mail] Email [e-mail]

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 3 of 51
Unpacking and Handling Instructions
1. Please read this manual carefully before unpacking the module or fitting it into your system. This will
certainly save time and avoid trouble.
2. Please observe the precautions for electrostatic sensitive modules.
3. If the product contains batteries, please do not place the board on conductive surfaces or anti-static
plastic or sponge, which can cause shorts and lead to battery or board trace damage.
4. Please do not exceed the specified operational temperatures. Please note that batteries might have
temperature restrictions.
5. Keep all original packaging material for future storage or warranty shipments of the board.
Caution
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by SBS Technologies. Dispose
of used batteries according to the instructions of SBS Technologies.
Vorsicht!
Explosionsgefahr bei unsachgemäßem Austausch der Batterie.
Ersatz nur durch denselben oder einen von SBS Technologies empfohlenen gleichwertigen
Typ. Entsorgung gebrauchter Batterien nach Angaben des Herstellers.
Notes
Drain static electricity before you install or remove any parts. Installing or removing modules without
observing this precaution could result in damage to this and/or other modules in your system.
Installation
Use the following steps to install your SBS Technologies hardware.
General Advisories
1. Before installing or removing any board, please ensure that the system power and external supplies
have been turned off.
2. Check that the jumpers and piggybacks are correctly configured for your application.
3. Mount the board/piggyback/transition module very carefully. See also additional advisories for
VMEbus and CompactPCI products below.
4. Connect all I/O cables.
5. Once you are certain that all modules are correctly fitted into the system and all connections have been
made properly, restore the power.
Advisories for VMEbus products
On a standard VMEbus backplane, remove the jumpers on the IACKIN - IACKOUT interrupt daisy
chain (1 jumper) and on the BGxIN - BGxOUT busgrant daisy chains (4 jumpers) for the slot where the
board is to be mounted. The daisy chain jumpers on the VMEbus backplane should be mounted on all
free slots.
Setting jumpers is not necessary for the SBS Technologies Auto-Daisy-Chain VMEbus backplane
(order number: VBUSxxAD). Please read additional advisories within the manual.

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 4 of 51
A board with system controller functionality must be fitted at slot 1 (for SBS Technologies products,
see additional notes within the manual).
Advisories for Compact PCI products
Mount the CPU board carefully on the first CPCIbus slot (called system slot). Note that on some boards
connectors are used for I/O purposes which must not be inserted into a CPCIbus backplane. A transition
module must be used instead.
Disclaimer
The information in this document has been carefully checked and is believed to be entirely reliable.
However, no responsibility is assumed for inaccuracies.
SBS Technologies reserve the right to make changes without further notice to any products herein to
improve reliability, function or design. SBS Technologies do not assume any liability arising out of the
application or use of any product or circuit described herein; neither do they convey any license under their
patent rights nor the rights of others. The software described herein will be provided on an "as is" basis and
without warranty. SBS Technologies accept no liability for incidental or consequential damages arising
from use of the software. This Disclaimer of warranty extends to SBS Technologies licensee, to licensee's
transferees and to licensee's customers or users and is in lieu of all warranties whether expressed, implied
or statutory, including implied warranties of salability or fitness for a particular purpose.
SBS Technologies do not accept any liability concerning the use of their products in life support systems.
Warranty
SBS Technologies grants the original purchaser of SBS Technologies products a warranty of 12 month
from the date of delivery. For details refer to the "Allgemeine Geschäftsbedingungen".
In the event of repair, please return the product together with additional written information about
the kind of defect
is the defect restricted to certain environmental conditions
what was the hardware environment when the defect appeared
were there input signals; if yes which
warranty/no warranty repair
Please use the error report form sheet at the end of this manual and use the original packing material to
avoid damage. Otherwise warranty may be lost.
Trademarks
Product and company names listed are trademarks or trade names of their respective companies owners.

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 5 of 51
Table of Contents
Unpacking and Handling Instructions.......................................................................................................3
Notes........................................................................................................................................................3
Installation ...............................................................................................................................................3
Disclaimer................................................................................................................................................4
Warranty..................................................................................................................................................4
Trademarks ..............................................................................................................................................4
Table of Contents ....................................................................................................................................5
1 General Information .........................................................................................................................7
1.1 Features ...........................................................................................................................................7
1.2 Board Types ....................................................................................................................................9
1.3 Specification....................................................................................................................................9
2 Hardware Installation.....................................................................................................................13
2.1 Front Panel ....................................................................................................................................14
2.2 Placement Plan Component side...................................................................................................15
2.3 Placement Plan Solder side ...........................................................................................................16
2.4 CTM6/CTM7 transition module placement plan ..........................................................................17
2.5 CTM6A/B/C transition module placement plan ...........................................................................17
2.6 Socket Installation.........................................................................................................................18
2.6.1 Serial Port Configuration for COM1 and COM2..................................................................18
2.6.2 Jumper Configuration............................................................................................................18
2.7 Connectors ....................................................................................................................................18
2.7.1 CompactPCI bus Connector (P7201, P7202)........................................................................19
2.7.2 I/O Connector (P7204, P7205)..............................................................................................20
2.7.2.1 I/O Connector (P7204, P7205) optional configurations................................................21
2.7.3 I/O Connector2 (P7203)........................................................................................................22
2.7.4 Flashdisk Connector (P1800), IDE connector (CTM6-P6, CTM6A-P18)............................23
2.7.5 Keyboard/PS-2 Mouse Interface (P2000, CTM6-P15, CTM6A-P27) ..................................24
2.7.6 Ethernet Interface 10BaseT and 100BaseTX (P5000, CTM6-P3, CTM6A-P15) .................24
2.7.7 Parallel Interface LPT1, 2 (CTM6-P2, CTM6-P13, CTM6A-P24, CTM6A-P13) ...............25
2.7.8 Serial Interfaces (P2200, CTM6-P5, 8, 11, 10, CTM6A-P16, P23, P26, P17) .....................25
2.7.9 VGA Interface (P4200, CTM6-P4, CTM6A-P12)................................................................26
2.7.10 USB Interface (P1700, CTM6-P15, CTM6A-P27)...........................................................26
2.7.11 Floppy connector (CTM6-P7, CTM6A-P19, CTM6A-P21).............................................27
2.7.12 LCD/Panel connector (CTM6-P9, CTM6A-P11) .............................................................28
2.7.13 Flat Panel Display connector (CTM6A-P14)....................................................................28
2.7.14 Wide SCSI connector (CTM7-P14, CTM6B-P25) ...........................................................29
2.7.15 SCSI connector (CTM6-P12, CTM6A-P22).....................................................................30
2.7.16 MIL 1553 connector (CTM6B-P10) .................................................................................30
2.7.17 PMC connectors (P7001, P7002) ......................................................................................31
2.7.18 PMC-I/O connector (P7003, CTM6B-P20) ......................................................................31
2.7.19 Misc. connector (CTM6-P15, CTM6A-P27) ....................................................................32
2.8 Memory Map.................................................................................................................................33
2.9 Register Set ...................................................................................................................................33
2.9.1 Standard Register Set ............................................................................................................34
2.9.2 Extended Register Set ...........................................................................................................34
2.10 Interrupts ...................................................................................................................................35
2.11 DMA .........................................................................................................................................35
3 Function Blocks ...............................................................................................................................36
3.1 EIDE/ATAPI Interface..................................................................................................................36
3.2 Serial Interfaces.............................................................................................................................36

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 6 of 51
3.3 Parallel Interfaces..........................................................................................................................36
3.4 Floppy Controller..........................................................................................................................36
3.5 Graphics Controller.......................................................................................................................37
3.5.1 Features .................................................................................................................................37
3.5.2 Supported Panel Types..........................................................................................................37
3.5.2.1 LCD Signal Mapping ....................................................................................................38
3.5.3 Software Installation .............................................................................................................39
3.6 PMC Slot.......................................................................................................................................39
3.7 SCSI Interface ...............................................................................................................................40
3.7.1 Software Installation .............................................................................................................41
3.8 Ethernet Interface ..........................................................................................................................42
3.8.1 Software Installation .............................................................................................................42
3.9 MIL-STD-1553 Interface ..............................................................................................................43
3.9.1 1553 Control Registers..........................................................................................................43
3.9.2 1553 Address Mapping .........................................................................................................44
3.9.3 1553 I/O Connection.............................................................................................................45
3.10 Additional devices.....................................................................................................................46
3.10.1 SMB bus devices...............................................................................................................46
3.10.1.1 Temperature Sensor ......................................................................................................46
3.10.1.2 Serial EEPROM ............................................................................................................46
3.10.2 Watchdog, Powerfail Monitor...........................................................................................46
3.10.3 LED Output.......................................................................................................................47
3.10.4 NMI Timer ........................................................................................................................47
3.10.5 Reset Button ......................................................................................................................47
3.10.6 Speaker..............................................................................................................................47
Appendix ..................................................................................................................................................48
Software Guide .....................................................................................................................................48
Error Report Form .................................................................................................................................49

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 7 of 51
1General Information
1.1 Features
•Microprocessor IntelCeleronprocessor 300 - 500 MHz in PPGA package
Version 3.0 and higher also supports following CPUs:
IntelCeleronprocessor 566 – 850 MHz in FCPGA package
Intelmobile Celeronprocessor 400 MHz in BGA2 package
IntelPentiumIIIprocessor 600 – 850 MHz in FCPGA package
Intelmobile PentiumIIIprocessor 400 – 700 MHz in BGA2 package
•Cache RAM 32 Kbytes instruction + 32 Kbytes data first level cache,
128 Kbytes (Celeron) /256 Kbytes (Pentium III) second level cache
•DRAM 64 - 256 Mbytes onboard ECC-SDRAM running at 66/100MHz
•Chipset Intel82443BX with 82371EB (PIIX4) ISA bridge
•Flash BIOS Easy updating, In-system programmable
AMI BIOS
Symbios SCSI BIOS
Intel (Chips&Tech) VGA BIOS
AMD Ethernet BOOT module
•Flash Disk 1.8" ATA Flash drive onboard
•EEPROM Serial EEPROM 512 Bytes for user purposes
•CMOS RAM 114 byte non-volatile RTC, MC146818 compatible RTC with onboard
Lithium battery
•Keyboard/Mouse IBM PC/AT compatible keyboard controller with PS/2 style connector
•USB 2 high-speed 12 Mbit/sec USB ports
•Watchdog Watchdog activates reset under software control
•NMI-Timer User programmable timer, allows "Real Time Functions" with Windows
3.11, Windows 95 and Windows NT
•LCD/VGA PCI VGA with 64-bit Windows accelerator and LCD flat panel
interface. Resolution up to 1600x1200 on CRT , 65536/16.7 Mio colors,
135MHz, 2MB RAM or 170 MHz, 4MB RAM, TFT or STN panel,
supports SS and DD type with max. 24-bit interfaces
•Fast Ethernet High speed PCIbus Ethernet controller (AMD 79C973) with 10BaseT
and 100BaseTX interface and integrated FIFO buffer
•SCSI PCI Wide SCSI-2 controller (SYM53C875) with up to 40 Mbytes/s
transfer rate
•Floppy Supported formats: 3.5 inch, 720 Kbyte - 1.44 Mbyte

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 8 of 51
•EIDE/ATAPI PCI EIDE/ATAPI interface with up to 33 MB/s transfer rate, for two
external devices and one onboard flash disk (not with I-style).
•Serial I/O Up to four async. 16550 compatible channels with 16 byte FIFO,
Transfer rates up to 115.2 Kbaud
•Parallel I/O Two fully bi-directional IEEE 1284 enhanced parallel ports support
ECP and EPP modes
•MIL-STD 1553 dual-redundant MIL-STD 1553 data bus
•PMC slot PCI mezzanine connector for standard PMC (CR7P) as well as for
rugged PMC (CR7R)
•Compact PCI PCI extension bus, 32-bit wide, 33 MHz, up to 132 MB/s, PCI-to-PCI
bridge for minimum bus load
•Temperature Sensor Shows temperatures of CPU on-die diode and system board, software
readable in 1 °C increments from -55 to +125 °C,
•H110 Backplanes When using the CR7 in backplanes providing H110 functionality at the
CPCI-J4 connector, a optional version the CR7T is available, which is
exactly the version CR7P but without the CPCI-J4 rear connector.
•I/O connections
function CR7 P U T R
VGA, Keyboard, Mouse, COM1, USB1 f r f r f r r
SCSI, Floppy, USB2, COM2-4, LPT1, Reset rrrr
MIL1553, PMC-IO r-rr
LCD, Wide SCSI, ext. IDE, LPT2 rr-r
Ethernet fffr
Reset switch fff-
LED f r f r f r
'f' = front, 'r' = rear
•Styles available
CR7R
C
I - - F
G
E
R K
N
CR7P/T
C
I F
G
- - - - - -
Front panel xxxx xx
Extended temp. x x x x x x
Parts soldered x x x x
Front stiffener bar x x x x
Middle stiffener bar xxxxxxxx
Wedge locks x x x x
Conf. coating x x x
Conduction cooling x
onboard battery xxxxxx

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 9 of 51
1.2 Board Types
The CR7P is the standard version and supplies it's IO functions also via connectors at the front panel.
The CR7U is exactly the same version, but contains no CPCI J3 connector (P7203). The CR7T has no
CPCI J4 connector (P7204) for applications were a H110 backplane is used.
The CR7R has no connectors at the front and is available in different styles for the various customer
needs. The styles are available from a standard, commercial C-Style up to a conduction cooled, rugged
N-Style. For more information please check the table above in the chapter 'Features'.
1.3 Specification
•PCB FR4 Multilayer
•Size Total size: 1 board : 6U, 4 TE
•Dimensions PCB: 233.35 mm x 160 mm x 20 mm
•Weight: CR7P about 1100 g (with frontpanel, flashdrive, CPU, heatsink)
CR7R conduction cooled N-Style about 850 g
•Power Consumption
The table below helps customers calculate the power consumption of each CR7 system. For
measurement, the CR7 is mounted on a CPCI backplane, without keyboard and hard disk. The operating
system (MSDOS) comes up from floppy disk. During measurement, the power consumption of the
backplane and the floppy drive can be ignored.
Typical Current at +5.0V Description
With
Power-
management
Without
Power-
management
CR7 128MB ECC-SDRAM, Wide SCSI,
Ethernet, 4MB VGA, COM1..4 RS232
Core
voltage
1.5 A 3.5 A Celeron 300 MHz 2.0 V
1.5 A 4.2 A Celeron 400 MHz 2.0 V
1.5 A 3.5 A Celeron FCPGA 566 MHz 1.5 V
1.5 A 4.9 A Celeron FCPGA 733 MHz 1.7 V
1.5 A 2.4 A mobile Celeron 400 MHz 1.35V
1.5 A 2.7 A mobile Pentium III 500 MHz 1.35V
1.6 A 4.6 A Pentium III 700 MHz 1.65V
1.7 A 5.4 A Pentium III 850 MHz 1.65V
For keyboard connected add 100 mA (typical)
The connectors P1700, P2000 and P4200 provide a fused VCC voltage (+5V). The total current
drawn from this VCC voltage may not exceed 1.0 Amperes.

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 10 of 51
The methods for measurements are defined as follows:
DOS prompt with power management :
BOOT disk with DOS 6.22
no autoexec.bat
config.sys: device=power.exe adv
wait until CPU enters HLT state
measure current on DOS prompt
DOS prompt without power management:
BOOT disk with DOS 6.22
no autoexec.bat
config.sys: device=power.exe off
measure current on DOS prompt
•Onboard Lithium Battery C,I,F,G style: CR2450, estimated life time >=10 years (45°C)
•External Battery Input K,R,N style: input range 2.7 – 4.5 V, max. current (3.0V) 2uA

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 11 of 51
Environment C,F,E-Style I,G,R,K,N-Style
High Temperature [°C]
Storage : +85°C+85°C
For the highest Operating temperature (C and I Style) please check following diagram:
0 m/s airflow means convection cooled only; the highest operating temperature for the CR7
board is always +70°C
The core temperature of the CPU can be read out via the onboard temperature sensor and the
value must keep to the limits from the table below under all operating conditions. This
temperatures are already included in the airspeed diagram above.
CPU type/speed max. Tcore
mobile Celeron 400MHz 100°C
mobile Pentium III 500MHz 100°C
Celeron 300A MHz 85°C
Celeron FCPGA 566MHz 90°C
Pentium III 700MHz 80°C
Pentium III 850MHz 80°C
For even more detailed information, please check the thermal report document of the CR7.
Low Temperature
Storage -40°C -40°C
Operating +0°C -40°C
Temp. Shock
Storage +/-10°C/min +/-20°C/min
Operating +/-5°C/min +/-10°C/min
Rel. Humidity
Storage up to 95%, non-condensing
Operating up to 95%, non-condensing
CR7
30,0
40,0
50,0
60,0
70,0
0,0 1,0 2,0 3,0 4,0 5,0 6,0 Airspeed m/s
max Tambient
mobCel400
mobPIII500
Cel300A
Cel566
PIII700
PIII850
02/26/2001 PS

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 12 of 51
Environment C,I,F,G,E,R-Style K,N-Style
Vibration
Spectrum 5 to 200 Hz 5 to 2000 Hz
Acceleration 2g 14g
Shock
Amplitude 20g 40g/100g
Duration 6ms 11ms/6ms

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 13 of 51
2Hardware Installation
The CR7 is a fully IBM-AT compatible stand-alone PC. It is equipped with all functions a conventional
Personal Computer can only offer with several add-on cards . Extension boards can be connected via the
CPCI interface. The minimized board size and the large number of interfaces and functions enable the
CR7 for use in many applications.

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 14 of 51
2.1 Front Panel

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 15 of 51
2.2 Placement Plan Component side

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 16 of 51
2.3 Placement Plan Solder side

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 17 of 51
2.4 CTM6/CTM7 transition module placement plan
For easy connection of the I/O signals to standard connectors, a transition module CTM6 is available
from SBS Technologies. The Wide SCSI connector is populated only on the version CTM7. Additional
Power should be provided to the CTM6 via P18/P17 for better supply of the IDE. The +12V to P19 are
not required when used with a CR7.
2.5 CTM6A/B/C transition module placement plan
When using the 1553 or the PMC IO signals, a different transition module CTM6A/B/C is available
from SBS Technologies. The CTM6B offers also the Wide SCSI connector. The connectors P20 (PMC-
I/O), P10 (MIL 1553) and P25 (Wide SCSI) are populated only on the version CTM6C. In difference to
CTM6, the CTM6A/B/C offers the floppy connector for foil cable as well as for standard 34 pol flat
cable and the IDE connector is a standard 40 pin connector with 2.54 mm pin spacing. Additional Power
should be provided to the CTM6A/B/C via P100/P101 for better supply of the IDE.

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 18 of 51
2.6 Socket Installation
2.6.1 Serial Port Configuration for COM1 and COM2
The serial ports COM1 and COM2 are user configurable for either RS232 or RS422 operation (CR7P C-
Style and I-Style boards only).
COM1 RS232 COM1 RS422 COM2 RS232 COM2 RS422
U2220 X
U2230 X
U2221 X
U2231 X
U2220, U2221 = SN75C185 default
U2230, U2231 = SN75C1167 = CPC-R422C from SBS Technologies
2.6.2 Jumper Configuration
There are no user accessible jumpers on the CR7.
2.7 Connectors
This chapter describes all connector pinouts on the CR7 and on the CTM6/CTM6A transition module.
The rugged versions of the CR7 (CR7Rxxxxxx) do not have any front panel connector. The description
of the rear connector is valid for the CR7P and CR7R versions as well.
The Ethernet at the CR7P can only be used at the front connector and with the CR7R at the
rear connector or at the transition module.
CPCI connector reference: The CPCI specification numbers the CPCI connectors from bottom
to top J1, J2, J3, J4, J5. The CPCI connectors on the CR7 are P7201, P7202, P7203, P7204,
P7205 respectively.

SBS Technologies – CR7 Hardware User’s Manual V 1.3 Page 19 of 51
2.7.1 CompactPCI bus Connector (P7201, P7202)
This connector is used for connection to a standard CPCI backplane. The signals shown here form the
secondary PCI bus.
P7201 A B C D E F
1VCC nc nc nc VCC GND
2nc VCC nc nc nc GND
3\INTA \INTB \INTC VCC \INTD GND
4nc GND V_I/O nc nc GND
5nc nc \PCI_RST GND \GNT0 GND
6\REQ0 GND nc PCICLK0 AD31 GND
7AD30 AD29 AD28 GND AD27 GND
8AD26 GND V_I/O AD25 AD24 GND
9\C/BE3 nc AD23 GND AD22 GND
10 AD21 GND nc AD20 AD19 GND
11 AD18 AD17 AD16 GND \C/BE2 GND
12-14 KEY KEY KEY KEY KEY KEY
15 nc \FRAME \IRDY GND \TRDY GND
16 \DEVSEL GND V_I/O \STOP \LOCK GND
17 nc nc nc GND \PERR GND
18 \SERR GND nc PAR \C/BE1 GND
19 nc AD15 AD14 GND AD13 GND
20 AD12 GND V_I/O AD11 AD10 GND
21 nc AD9 AD8 nc \C/BE0 GND
22 AD7 GND nc AD6 AD5 GND
23 nc AD4 AD3 VCC AD2 GND
24 AD1 VCC V_I/O AD0 \ACK64 GND
25 VCC \REQ64 nc nc VCC GND
P7202 A B C D E F
1PCICLK1 GND \REQ1 \GNT1 \REQ2 GND
2PCICLK2 PCICLK3 nc \GNT2 \REQ3 GND
3PCICLK4 GND \GNT3 \REQ4 \GNT4 GND
4V_I/O nc nc GND nc GND
5nc GND V_I/O nc nc GND
6nc nc nc GND nc GND
7nc GND V_I/O nc nc GND
8nc nc nc GND nc GND
9nc GND V_I/O nc nc GND
10 nc nc nc GND nc GND
11 nc GND V_I/O nc nc GND
12 nc nc nc GND nc GND
13 nc GND V_I/O nc nc GND
14 nc nc nc GND nc GND
15 nc GND P.U. \REQ5 \GNT5 GND
16 nc nc P.U. GND nc GND
17 nc GND \RST_BUT \REQ6 \GNT6 GND
18 nc nc nc GND nc GND
19 GND GND nc nc nc GND
20 PCICLK5 GND nc nc nc GND
21 PCICLK6 GND nc nc nc GND
22 nc nc nc nc nc GND