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PC8374L Datasheet(PDF) 161 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) 161 Page - National Semiconductor (TI)

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8.0 Health Management (HM) (Continued)
Revision 1.1
161
www.national.com
8.5.14 Fan Tachometer Reading 3 MSB
Contains the number of 90 KHz clock cycles during a full fan revolution, MSB byte.
Location: 2Dh
Type:
RO
8.5.15 Fan Tachometer Reading 4 LSB
Contains the number of 90 KHz clock cycles during a full fan revolution, LSB byte.
Location: 2Eh
Type:
RO
8.5.16 Fan Tachometer Reading 4 MSB
Contains the number of 90 KHz clock cycles during a full fan revolution, MSB byte.
Location: 2Fh
Type:
RO
8.5.17 FANPWM1 Current Duty
Current FANPWM1 duty cycle.
Location: 30h
Type:
R/W or RO (Becomes read-only when FANPWM1 Configuration is not set for manual mode.)
Bit
76543210
Name
TACH_HIGH
Reset
11111111
Bit
Description
7-0
TACH_HIGH. Same as TACH_HIGH of Fan Tachometer Reading 1 MSB register, but for Fan Tachometer 3.
Bit
76543210
Name
TACH_LOW
Reset
1
1
111111
Bit
Description
7-0
TACH_LOW. Same as TACH_LOW of Fan Tachometer Reading 1 LSB register, but for Fan Tachometer 4.
Bit
76543210
Name
TACH_HIGH
Reset
11111111
Bit
Description
7-0
TACH_HIGH. Same as TACH_HIGH of Fan Tachometer Reading 1 MSB register, but for Fan Tachometer 4.
Bit
76543210
Name
PWM_DUTY
Reset
11111111
Winbond Electronics Corp. Advanced PC Product Center



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