FIC A360 User Manual
Software Functional Overview
3-12
FIC A360 Service Manual
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.
3.3.12 VT82C686B SMBus Connection Devices
related chips. The BIOS should initialize the SMBus devices during POST.
3.3.12 VT82C686B SMBus Connection Devices
SMBus Device
Master/Slave
Address
BIOS Need to Initialization
VT82C686B – Core
Logic
Logic
Both Host and
Slave
02h
Enable SMBus interface and
SMBus interrupt
SMBus interrupt
SO-DIMM Slave
A0h
Not
Need
PMU07
Master
10h
Enable PS01 decode interface
MAXIM1617 –
Temperature Sensor
Temperature Sensor
Slave
9Ch
Program the desired temperature
range.
range.
OZ168 Slave
34h
Audio
DJ
Battery Slave
A8h
No
Need
Clock Synthesizer
Slave
D2h
Program the desired clock
frequency (Pin23 output 24MHz,
Pin22 output 48MHz)
frequency (Pin23 output 24MHz,
Pin22 output 48MHz)
3.3.13 Resource Allocation
This section summarizes the resource allocation of the notebook computer.
I/O Map
I/O Map
Hex Address
Device
000 - 01F
8237-1
020 - 021
8259-1
022 VIA
VT82C686B
040 - 05F
8254
060 - 064
Keyboard Controller
068 – 06C
PMU07 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
0C0 – 0DF
8237-2
0F0 – 0FF
Math Coprocessor
170 - 177
IDE Secondary Command Block
1F0 - 1F7
IDE Primary Command Block
200 - 20F
Game Port
220 - 22F
Sound Blaster
279
ISA PnP Address