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Software Functional Overview
Device
Number
Function
Number
Device Name
AD11 Device 00 Function 0 SIS645DX - Host to PCI bridge
Device 01 Function 0 SIS961 – PCI to PCI bridge
AD19 Device 08 Function 0 LAN / Modem
Function 0 SIS961 - PCI to ISA bridge
Function 5 SIS961 - IDE interface
Function 2 SIS961 - USB Port 0-1 interface
AD13 Device 02 Function 3 SIS961 - USB Port 2-3 interface
Function 4 SIS961 - PMU and SMBus interface
Function 7 SIS961 - AC97 Audio interface
Function 6 SIS961 - AC97 Modem interface
AD23 Device 0C Function 0 OZ6912 - Card Bus Socket A
AD24 Device 0D Function 0 IEEE1394
The table below summarizes the INT Pin Allocation:
INT Pin PCI Device
INTA CardBus/1394/LAN/Modem
INTB LAN/Modem
INTC NVIDIA
INTD USB (Embedded in SIS961)
The table below summarizes the PCI bus master Allocation:
Arbiter Signal Agents
(Master)
Function Use
REQ00/GNT00 Realtek 8100BL LAN Controller
SIS 961
REQ10/GNT10 OZ6912 Card Bus Controller
REQ20/GNT20 ASKEY
1456VQL19R-4
MODEM Controller
REQ30/GNT30 Lucent FW 323 1394 controller
REQ40/GNT40 None None
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.
FIC M295 / M296 Service Manual 3-11