User Guide

Software Functional Overview
3-8 FIC MB02 Service Manual
3.3.11 PCI Device
The table below summarizes the PCI IDSEL Pin Allocation:
IDSEL Pin PCI Device
Device Number Function
Number
Device Name
AD23 Device 07 Function 0 RICOH Card Bus
Function 1 RICOH IEEE1394
AD17 Device 01 Function 0 MINI PCI
The table below summarizes the INT Pin Allocation:
INT Pin PCI Device
INTA CardBus/MiniPCI/LAN
INTB Cardbus/MiniPCI
INTC
INTD
The table below summarizes the PCI bus master Allocation:
Arbiter Signal Agents
(Master)
Function Use
REQ00/GNT00
REQ10/GNT10 RICOH Card Bus Controller
REQ20/GNT20
REQ30/GNT30
3.3.12 SMBus Devices
The SMBus is a two-wire interface through which the system can communicate
with power-related chips. The BIOS should initialize the SMBus devices during
POST.
ICH4 SMBus Connection Devices
SMBus Device Host/Slave Address BIOS Need to Initialization
SO-DIMM Slave A0h/A2
h
Memory Auto Sizing (SPD).
CY28346
CLK Generator
Slave D2h Program the desired clock frequency
(Pin23 output 24MHz, Pin22 output
48MHz)
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