User Guide

Software Functional Overview
FIC M785 Service Manual 3-11
3.3.11 MBus 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.
SIS961 SMBus Connection Devices
SMBus Device Master/Slave Address BIOS Need to Initialization
SIS650 – Core Logic Both Host and
Slave
02h Enable SMBus interface and
SMBus interrupt
SO-DIMM Slave A0h Not Need
ICS952001, ICS93722
CLK Generator
Slave D2h Program the desired clock
frequency (Pin23 output 24MHz,
Pin22 output 48MHz)
PMU 08 SMBus Connection Devices
SMBus Device Host/Slave Address
A7 ~ A1
BIOS Need to Initialization
PMU08 Master 10h Enable PS01 decode interface
MAX1617 (Thermal
sensor)
Slave 9Ch Program the desired temperature
range
Battery (1
st
Battery) Slave A8h No Need
3.3.12 Resource Allocation
This section summarizes the resource allocation of the notebook computer.
l I/O Map
Hex Address Device
000 - 01F 8237-1
020 - 021 8259-1
022 SIS 962
040 - 05F 8254
060 - 064 Keyboard Controller
068 – 06C PMU08 Controller
070 - 07F RTC & NMI Mask
080 - 08F DMA Page Registers
092 System Control Port
0A0 - 0A1 8259-2
0B2 Advanced Power Management Control Port
0B3 Advanced Power Management Status Port
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com