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Technical Reference
SB-6862
®
Dual Pentium Pro Single Board Computer
with Natoma Chipset
1641 McGaw Avenue
Irvine, California 92614
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Features ® Intel Pentium Pro processor, upgradeable through 180 or ® Pro upgrade 200 MHz; and dual Pentium Intel Natoma chipset Basic connectors provided for speakers, hard disk LED, reset/turbo LED, keylock, PS/2 mouse and CMOS battery System memory upgradeable to 1 GB using x 64 or x 72 dual inline memory modules (DIMM) Processor facilitated error correcting memory (ECC) using x 72 DIMM Processor-based cache: 256 KB or 512 KB on-board On-board E-IDE controller with sepera
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FCC Standards The FCC (Federal Communications Commission) restricts the amount of radiation and radio frequency emissions coming from computing equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not ins
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To ensure compliance to FCC non-interference regulations, peripherals attached to this device require shielded I/O cables. NOTICE: The use of a non-shielded I/O cable with this device is in violation of U.S. Federal law and will not allow the device to meet the maximum emission limits. CAUTION: Any changes or modifications not expressly approved by the grantee of this device could void the users authority to operate the equipment. Note: If you have purchased the miniature tower system, please n
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WARNING CAUTION: THERE IS A DANGER OF EXPLOSION IF THE BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISCARD USED BATTERIES ACCORDING TO THE MANUFACTURERS INSTRUCTIONS. ATTENTION:IL Y A DANGER DEXPLOSION SIL Y A REMPLACEMENT INCORRECT DE LA BATTERRIE. REMPLACER UNIQUEMENT AVEC UNE BATTERI DU MEME TYPE OU DUN TYPE RECOMMENDE PAR LE CONSTRUCTEUR. ETTERAU REBUT LES BATTERRIES USAGEES CONFORMEMANT AUX INSTRUCTIONS DU FABRICATANT.
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NOTICE The information within this manual is subject to change without notice. CSS Laboratories, Incorporated shall not be held liable for technical or editorial errors or omissions contained in herein; nor for incidental or consequential damages resulting from the furnishing, performance or use of this material. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, mechanical, photocopying, recording or oth
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Table of Contents Overview ............................................................................... 1 The Microprocessor .............................................................. 2 The Board ............................................................................. 3 Voltage Regulator..................................................... 4 Board Connectors ................................................................. 5 Keyboard Connector K1 ....................................
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Overview This document describes the technical features of the board. The topics include: The Microprocessor - description of the features of ® the Pentium Pro microprocessor Board - illustration and brief description of the board Connectors - description of connector locations and functions on the board Jumpers - detailed description of the jumpers used to the board System Memory - detailed description of system memory how to add memory System Memory Map - listing of traditi
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The Microprocessor The Pentium Pro microprocessor contains all the features of the Pentium and 80486 processors, and is 100% compatible with 8086/88, 80286, and 80386 DX and SX microprocessors. In addition, the Pentium features: 64-bit Data Bus Superscalar Architecture Capability for executing two instructions in parallel Pipelined Floating-Point Unit Separate 8 KB Code and 8 KB Data Caches (total 16 L1 cache) 256 KB or 512 KB internal L2 cache Bus Cycle Pipelining Writeback ME
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FLASH VOLTAGE REGULATORS JP29 JP30 JP31 JP32 JP45 U60 DIMM 1 U59 DIMM 2 DIMM 3 U58 U57 DIMM 4 The Board Figure 1: The Board SB-6862 3 J8 FLOPPY 1 1 J11 1 IDE-PRI J12 1 IDE-SEC JP24 J70 1 1 1 1 DIMM JP4 J69 KEYBOARD K1 1 J68 1 1 JP3 1 1 JP18 J97 J98 1 1 JP47 JP46 SERIAL 2 JP1 VRM VRM 1 1 SERIAL 1 JP2 1 1 1 1 1 J99 J100 1 1 1 1 J3 J4 JP7 1 JP43 JP16 DB1 PARALLEL 1 1 1 J47 1 JP27 1 JP6 JP15 Processor Dual Processor JP26 JP42 J67
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Voltage Regulator Module A voltage regulator module installed on the board ensures that the correct voltage is provided to the particular processor installed. When up grading to the faster grade of Pentium processor, make sure to have the appropriate voltage regulator installed. 4 SB-6862
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Board Connectors Connector Description K1 Keyboard J3, J4 Universal Serial Bus (USB) J8 Floppy drive J11 Primary IDE J12 Secondary IDE J98 Serial 1 J97 Serial 2 DB1 Parallel JP18, JP45 12 volt CPU fans Keyboard Connector K1 Keyboard plugs are keyed for proper installation. Pin Assignment Pin Assignment 1 Clock 4 Ground 2 Data 5 +5 Vdc 3 Not used Primary IDE Drive Header J11 J11 is the connector for the primary on-board PCI IDE drive controller. Pin 1 is marked. When connecting your hard drive,
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Secondary IDE Drive Header J12 J10 is the connector for the secondary on-board PCI IDE hard drive controller. Pin 1 is marked. Use this to cable your IDE hard drive. When connecting your hard drive, orient the ribbons pin one with pin 1 of J71. Parallel Port DB1 DB1 provides the connection for the boards parallel port. Serial Port 1 Connector J98 J98 provides the connection for serial port 1 (COM 1). Serial Port 2 Connector J97 J97 provides the connection for the boards serial port 2 (COM
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Fan Connectors JP18, JP45 These fans provide cooling for the powerful Pentium Pro processors. JP45 connects to the primary processors fan. JP18 connects to the dual processor fan. Pin Assignment 1 12 volt 2 Ground SB-6862 7
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Jumpers The boards jumpers are pre-configured at the factory. Read the following section carefully, before configuring your system. The board has the following jumpers: Jumper Description JP4 Processor bus clock speed JP26, JP27 Processor bus frequency JP32, JP31 Processor speed ratio JP30, JP29 JP69, JP24 Test pins (jumper closed) JP1, JP2, J70 J47, JP47, JP46 Test pins (jumper open) Processor Bus Clock Speed JP4, JP3 Pentium Pro processors are designed with one of two bus clock speeds. The b
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Processor Bus Frequency JP26, JP27 JP26 and JP27 synchronize the processor bus frequency with the processors speed. Processor Bus JP26 JP27 Frequency 60 MHz IN OUT 66 MHz OUT IN Processor Speed Ratio JP32, JP31, JP30, JP29 The Pentium Pro uses a clock multiplier to run at a speed faster than the processor bus. These jumpers match the installed processors speed with single board computers defined processor speed. When upgrading processors, you may need to adjust these jumpers. Processor J
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The following table matches processor speed, processor clock and the boards processor bus speed: Processor Clock Ratio Processor Type/Speed Bus Speed 180 MHz 3x 60 MHz 200 MHz 3x 66 MHz 10 SB-6862
