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PC8374L Datasheet(PDF) 153 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC8374L
Description  SensorPathTM SuperI/O with Glue Functions
PDF  239 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC8374L Datasheet(HTML) 153 Page - National Semiconductor (TI)

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8.0 Health Management (HM) (Continued)
Revision 1.1
153
www.national.com
8.5 HEALTH MANAGEMENT REGISTERS
The HM registers implement health monitoring and control functionality.
Reads to reserved and undefined registers return 0. Writes to reserved and undefined registers are ignored.
Table 54 lists all HM registers. The description of each register is grouped according to register functionality. The Status
Register 1-3 (address 41h, 42h and 73h respectively) are not accessible from LPC.
All these registers are VSB3 powered and thus are reset by VSB Power-Up reset.
Table 54. Health Management Registers
Address
Register Name
Type
Section
20h
Voltage Reading 2.5V
RO
8.5.1
21h
Voltage Reading Vccp
RO
8.5.2
22h
Voltage Reading 3.3V
RO
8.5.3
23h
Voltage Reading 5V
RO
8.5.4
24h
Voltage Reading 12V
RO
8.5.5
25h
Temperature Reading Zone1
RO
8.5.6
26h
Temperature Reading Zone2
RO
8.5.7
27h
Temperature Reading Zone3
RO
8.5.8
28h
Fan Tachometer Reading 1 LSB
RO
8.5.9
29h
Fan Tachometer Reading 1 MSB
RO
8.5.10
2Ah
Fan Tachometer Reading 2 LSB
RO
8.5.11
2Bh
Fan Tachometer Reading 2 MSB
RO
8.5.12
2Ch
Fan Tachometer Reading 3 LSB
RO
8.5.13
2Dh
Fan Tachometer Reading 3 MSB
RO
8.5.14
2Eh
Fan Tachometer Reading 4 LSB
RO
8.5.15
2Fh
Fan Tachometer Reading 4 MSB
RO
8.5.16
30h
FANPWM1 Current Duty
R/W or RO1
8.5.17
31h
FANPWM2 Current Duty
R/W or RO1
8.5.18
32h
FANPWM3 Current Duty
R/W or RO1
8.5.19
33h-3Dh
Reserved
3Eh
COMPANY ID
RO
8.5.20
3Fh
Version
RO
8.5.21
40h
Configuration
R/W
8.5.22
41h
Status Register 1
RO
8.5.23
42h
Status Register 2
RO
8.5.24
43h
Tach Mode
R/W
8.5.60
44h
Voltage Low Limit 2.5V
R/W or RO2
8.5.27
45h
Voltage High Limit 2.5V
R/W or RO2
8.5.28
46h
Voltage Low Limit Vccp
R/W or RO2
8.5.29
47h
Voltage High Limit Vccp
R/W or RO2
8.5.30
48h
Voltage Low Limit 3.3V
R/W or RO2
8.5.31
Winbond Electronics Corp. Advanced PC Product Center



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