Nexcom PEAK 637 User manual

PEAK 637 User‘s Guide
Specification 1-1
PEAK 637
Single Board Computer
User′
′′′s Guide
@Copyright 2000
All Rights Reserved
Manual edition 1, May 2001
The information in this document is subject to change without prior notice
in order to improve reliability, design and function and does not represent commitment on
the part of the manufacturer.
In no event will the manufacturer be liable for direct, indirect, special, incidental, or
consequential damages arising out of the use or the possibility of such damages.
This document contains proprietary information protected by copyright. All rights are
reserved. No part of this manual may be reproduced by any mechanical, electronic, or other
means in any form without prior written permission of the manufacturer.
Trademarks
PEAK 637 is registered trademarks of NEXCOM Co., Ltd., IBM PC is a registered trademark of
International Business Machines Corporation. Intel and Pentium III are registered
trademarks of Intel Corporation. Award is a registered trademark of Award Software, Inc.
Other product names mentioned herein are used for identification purposes only and may be
trademarks and/or registered trademarks of their respective companies.

PEAK 637 User‘s Guide
Specification 1-2
Chapter 1: Specification
The PEAK 637 is a full size Single Board Computer. It applies single Socket 370 FC-PGA based
processor, supporting both 66 MHz (Celeron) and 100 MHz (Pentium III) FSB CPU up to 850 M+Hz and
future Intel 100MHZ FSB CPU to 1GHZ or 1.1GHZ. The memory it can accommodate is 512 MB
SDRAM up to 100 MHz.
PEAK 637 will be offered at extraordinary good pricing while also equip with powerful features.
System architecture
 Full size SBC with PCI/ISA Gold finger
 Intel Brand New Socket 370 Celeron/Pentium III with 66/100MHz FSB
 PCI V2.1 complied
 PICMG 1.0 (Rev.2.0) complied
CPU Support
 Intel Celeron/Pentium III (FC-PGA) CPU with 128/256 cache on die up 850MHz, and future Intel
100MHZ FSB CPU to 1GHZ or 1.1GHZ
 Supports streaming SIMD instruction
Main Memory
 Support SDRAM up to 512MB (Max.)
 168 pin DIMM socket ×2
BIOS
 Award System BIOS
Chip Set
 Intel 82440BX AGP set
 66/100MHz FSB support
 PCI V2.1 complied
On Board RTC
 High precision real time clock/calendar with battery back up
Watchdog Timer
 1, 2, 4 ….. 64 seconds time-out intervals

PEAK 637 User‘s Guide
Specification 1-3
On Board I/O
 Winbond 83977 Super I/O ON BOARD
 IDE Enhanced IDE mode 4, UltraDMA33, Two 40-pin connectors on the board.
 FDD Supports FDD, One 34-pin connector on the board.
 Serial Port Two serial ports
 COM1 9-pin D-sub connector at the I/O bracket
 COM2 10-pin flat-cable connector on the board
 Parallel Port Bi-directional SPP/EPP/ECP support, One 26-pin connector on board
 Keyboard One PS/2-type connector
 Mouse One PS/2-type connector
 USB Supports 2 USB channels (share one USB power fuse, 6pin header)
Dimensions
 338 mm (D) * 122 mm (W)
Power Requirements
 +5V：10A (Max.)
 +12V: 500mA (Max.)
 -12V: 50mA (Max.)
Environments
 Operating temperatures: -10°C to 60°C
 Storage temperatures: -40°C to 80°C
 Relative humidity: 5 ~ 95%RH (no-condensing))
Certification
 FCC Class A, CE marking
Operating System
 Supports DOS 6.X and above, Windows NT, Windows 95 and 98, WindowsMe, Windows2000,

PEAK 637 User‘s Guide
Jumper Setting and Pin Assignment 2-1
Chapter 2 Switches and Connectors
This chapter gives the definitions and shows where to locate the positions of switches and
connectors.
Connector Function
J1 CPU Fan Header
J2 SMBUS Connector
J3, J4 DIMM Socket
J8 Primary IDE Connector
J9 Secondary IDE Connector
J10 Reset Connector
J12 ATX Power Connector
J13 IDE Active LED
J15 Parallel Connector
J16 ATX Power Button
J17 FDD Connector
J18 Speaker Connector
J19 USB Connector
J20 External Keyboard Connector
J21 MOUSE Connector
J22 KEYBOARD Connector
J23 COM2
J24 COM1
J25 Wake On LAN Connector
JP3 Key Lock
JP5 IR Connector
 J16: ATX Power Button
PIN No. Description
1 +3.3V
2 PWRBT#
 RTC Clear
JP4
Enabled 1-2
*Disabled N/C

PEAK 637 User‘s Guide
Jumper Setting and Pin Assignment 2-2
 AT/ATX FUNCTION SELECT
*AT Function ATX Function
JP2 *1-2 2-3
J11 *1-2 2-3
 J10: Reset Connector
PIN No. Description
1 RESET
2 GND
 J12 ATX Power Connector
PIN No. Description
1 5VSB
2 GND
3 Power On#
 J13: IDE Active LED
PIN No. Description
1 +5V
2 ACTIVE#
 J1: CPU Fan Header Connector
PIN No. Description
1 GND
2 +12V
3 Sense
 J8 /J9: IDE Connector
PIN No. Description PIN No. Description
1 Reset# 2 Ground
3 Data 7 4 Data 8
5 Data 6 6 Data 9
7 Data 5 8 Data 10
9 Data 4 10 Data 11
11 Data 3 12 Data 12
13 Data 2 14 Data 13
15 Data 1 16 Data 14
17 Data 0 18 Data 15
19 Ground 20 N/C
21 DMA REQ 22 Ground
23 IOW# 24 Ground
25 IOR# 26 Ground
27 IOCHRDY 28 Ground
29 DMA ACK 30 Ground
31 Interrupt 32 NC
33 SA1 34 N/C
35 SA0 36 SA2
37 HDC CS1# 38 HDC CS3#
39 HDD Active# 40 Ground

PEAK 637 User‘s Guide
Jumper Setting and Pin Assignment 2-3
 J2: SMBUS Connector
PIN No. Description
1 SMBCLK
2 SMBDATA
 J15: Parallel Port Connector
PIN No. Description PIN No. Description
1 Strobe# 2 Data 0
3 Data 1 4 Data 2
5 Data 3 6 Data 4
7 Data 5 8 Data 6
9 Data 7 10 Acknowledge
11 Busy 12 Paper Empty
13 Printer Select 14 Auto Form Feed#
15 Error# 16 Initialize
17 Printer Select IN# 18 Ground
19 Ground 20 Ground
21 Ground 22 Ground
23 Ground 24 Ground
25 Ground 26 N/C
 J17: FDD Connector
PIN No. Description PIN No. Description
1 Ground 2 Density Select
3 Ground 4 N/C
5 N/C 6 Drate0
7 Ground 8 Index#
9 Ground 10 Motor Enable A#
11 Ground 12 Drive Select B#
13 Ground 14 Drive Select A#
15 Ground 16 Motor Enable B#
17 Ground 18 Direction#
19 Ground 20 Step#
21 Ground 22 Write Data#
23 Ground 24 Write Gate#
25 Ground 26 Track 0#
27 Ground 28 Write Protect#
29 N/C 30 Read Data#
31 Ground 32 Head Side Select#
33 Ground 34 Disk Change#
 J18: Speaker Connector
PIN No. Description
1 +5V
2 GND
3 GND
4 Speaker Signal

PEAK 636F User‘s Guide
Jumper Setting and Pin Assignment 2-4
 J19: USB Connector
PIN No. Description
1 +5V
2 USBD0-
3 USBD0+
4 USBD1-
5 USBD1+
6 GND
 J20: External Keyboard Connector
PIN No. Description
1 Keyboard Clock
2 Keyboard Data
3 N/C
4 GND
5 +5V
 J21: Mouse Connector
PIN No. Description
1 MOUSE DATA
2 N/C
3 GND
4 5V
5 MOUSE CLK
6 N/C
 J22: Keyboard Connector
PIN No. Description
1 KBDATA
2 N/C
3 GND
4 5V
5 KBCLK
6 N/C
 J23/J24: RS232 Connector
PIN No. Description
1 Data Carrier Detect (DCD)
2 Receive Data (RXD)
3 Transmit Data (TXD)
4 Data Terminal Ready (DTR)
5 Ground (GND)
6 Data Set Ready (DSR)
7 Request to Send (RTS)
8 Clear to Send (CTS)
9 Ring Indicator (RI)

PEAK 636F User‘s Guide
Jumper Setting and Pin Assignment 2-5
 J25: Wake On LAN Connector
PIN No. Description
1 5VSB
2 GND
3 PME#
 JP3: KEYLOCK Connector
PIN No. Description
1 VCC
2 N/C
3 GND
4 KEYLOCK
5 GND
 JP5: IR Connector
PIN No. Description
1 5V
2 IRRXH
3 IRRX
4 GND
5 IRTX

PEAK 636F User‘s Guide
Jumper Setting and Pin Assignment 2-6
Note: Watch Dog Timer
Watch Dog Timer Working Procedure
The Watch Dog Timer (WDT) is the special hardware device. The WDT function
is to monitor the computer system whether work normally, otherwise, it will
have some measures to fix up the system.
It contains a receivable SQW signal from RTC, and could set time and can clear
the counter function. When time is up, WDT can send Reset or NMI signal.
Operator has to write a value into WDT Configuration Register (Write the control
value to the Configuration Port), and clear WDT counter (read the Configuration
Port).
Watch Dog Timer character and function
WDT Configuration port F2 Default at F2
Watch Dog Timer Disabled 1. Default at disabled
Enabled 2. Enabled for user′s programming
WDT Time out active for Reset Default at Reset
NMI
WDT Active Time 1 sec
2 sec
4 sec
8 sec
16 sec
32 sec
64 sec
Default at 64 sec

PEAK 636F User‘s Guide
Jumper Setting and Pin Assignment 2-7
Watch Dog Timer Control Register
The Watch Dog Timer Control Register is to control the WDT working mode. You can
write the value to WDT Configuration Port.
The following is the Control Register bit definition.
7 6543210
XxX
111 : N/A
110 : Select 1 second
101 : Select 2 second
100 : Select 4 second
011 : Select 8 second
010 : Select 16 second
001 : Select 32 second
000 : Select 64 second
1 : Enable watch dog timer
0 : Disable watch dog timer
1 : Select NMI
0 : Select Reset
Don’t care
Watch Dog Timer Programming Procedure
•
••
•Power on or reset the system
The initial value of WDT Control Register (D4~D0) is zero, when power is on or reset
the system. The following means the initial value of WDT ( 00000000b ) :
Bit Value Mean
4 0 Select Reset
3 0 Disable watch dog timer
2, 1, 0 0 0 0 Select 64 second
•
••
•Initialize the SQW of RTC (set SQW output period=0.5 second)
To initialize the SQW of RTC processor is to set the SQW signal which is output
period=0.5 second. It offers the basic frequency of the WDT counter.
The following is an example of initializing the SQW signal program in Intel 8086
assembly language.