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CP308
Configuration
ID 1027-4487, Rev. 3.0
Page 4 - 21
P R E L I M I N A R Y
4.4.2
SMC Controller Status Register 1 (ICSTA1)
The SMC Controller Status Register 1 shows the overtemperature status of the GS45 GMCH
and the processor.
4.4.3
SMC Keyboard Controller-Style Interface
The host processor communicates with the SMC via a keyboard controller-style (KCS) inter-
face. This interface is for the System Management Software (SMS) used within an operating
system. The KCS interface is at the I/O location 0xCA2 and 0xCA3.
Table 4-21: SMC Controller Status Register 1 (ICSTA1)
REGISTER NAME
SMC CONTROLLER STATUS REGISTER 1 (ICSTA1)
ADDRESS
0x29E
BIT
NAME
DESCRIPTION
RESET
VALUE
ACCESS
7 - 3
Res.
Reserved
00000
R
2
ICHOT
GMCH overtemperature detection (Aux2 trip point):
0 = GMCH is at its normal operating temperature
1 = GMCH temperature is above the AUX2 trip point
0
R
1
Res.
Reserved
0
R
0
IPHOT
Processor overtemperature detection:
0 = Processor is at its normal operating temperature
1 = Processor temperature is above 105 °C
0
R
Содержание CP308
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