ATX6021/5 User’s Manual 5 PCI System Backplane I. Board Dimensions 12.0 132.0 40.0 37.0 25.0 12.0 6.0 6.17 31.26 9.0 34.59 P1 P2 P3 P4 SMI+ SMI- 1 1 1 CN7 CN6 2 KCLK 1 KDTA CN5 CN10 JP4 JP1 1 1 KGND KVCC 1 CN9 9.0 CN8 1 GND GND 5VSB VCC3 -5V +5V -12V +12V SMI+ SMIPI GND PO 5VSB JP3 2 PSON GND 1 JP2 CN4 125.74 CN2 SYS 20.32 1 ATX6021/5 User’s Manual 5 PCI System Backplane II. Jumper Settings & Connectors Embedded Control Logic Settings Jumper JP2 Description Open: System power ON/OFF via JP1 Short: System power ON/OFF via power supply switch JP1 Short 1-2: System power ON/OFF either by front panel power button CN8 or via ACPI compliant Microsoft Windows software Short 2-3: System power ON/OFF via front panel power button CN8 CN8 Power ON/OFF push button connector to front panel CN7 6-pin cable to CPU card; used for Microsoft Windows Soft-power ON/OFF (ACPI compliant) CN6 External SMI connector to front panel III. Pin Assignments 20-pin ATX Power Connectors: CN4 2 Brown 3.3V 11 1 3.3V Brown Blue -12V 12 2 3.3V Brown Black Grey GND PS-ON 13 14 3 4 GND 5V Black Red Black Black GND GND 15 16 5 6 GND 5V Black Red Black White Red Red GND -5V 5V 5V 17 18 19 20 7 8 9 10 GND PW-OK 5VSB 12V Black Orange Purple Yellow ATX6021/5 User’s Manual 5 PCI System Backplane Standard PS/2 Power Connector: CN2 Pin Signal P8 & P9 Color 1 NC (P.G.) Orange 2 +5V DC Red 3 +12V DC Yellow 4 -12V DC Blue 5-8 GND Black 9 -5V DC White 10 +5V DC Red 11-12 +5V DC Red External Power Connector: CN9 1 GND 2 GND 3 5VSB 4 5 3.3V -5V 6 7 +5V -12V 8 +12V Keyboard Connectors: CN5 & CN10 1 KBCLK 2 KBDATA 3 4 No Connector KBGND 5 KBVcc 3 ATX6021/5 User’s Manual 5 PCI System Backplane IV. 3.3V Power Sources for PCI Slots There are two alternative sources for the 3.3V power supply of the four PCI slots. Power source may be generated from either the ATX power supply or the CPU card. The following diagram and table illustrate the jumper settings for each alternative. CN4: ATX Power Connector System CPU Board JP3 JP4 1 3 5 7 9 1 3 5 7 9 2 4 6 8 10 P 1 Options 11 12 13 14 15 16 17 18 19 20 2 4 6 8 10 P 2 P 3 1 2 3 4 5 6 7 8 9 10 P 4 Settings 3.3V Source from System Slot JP3: Short 1-2, 3-4, 5-6, 7-8, 9-10 JP4: All Open 3.3V Source from ATX P/S (default) JP3: All Open JP4: Short 1-2, 3-4, 5-6, 7-8, 9-10 Copyright 1999 by AXIOM Technology Co., Ltd. All rights reserved. November 1999, Version A1 Printed in Taiwan Trademarks Acknowledgments AXIOM is a trademark of AXIOM Technology Co., Ltd. Other brand names and trademarks are the properties and registered brands of their respective owners. Specifications are subject to change without notice. 4