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PC87372 Datasheet(PDF) 61 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87372
Description  LPC SuperI/O with Glue Functions
PDF  144 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87372 Datasheet(HTML) 61 Page - National Semiconductor (TI)

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3.0 Device Architecture and Configuration (Continued)
61
www.national.com
Revision 1.2
3.14.3 Fan Speed Monitor Configuration Register (FSMCF)
This register is reset to 00h.
Power Well: VDD3
Location:
Index F0h
Type:
Varies per bit
Bit
76543210
Name
LOCKFCF
Reserved
FANMON
_EN2
Reserved
FANMON
_EN1
Reserved
Reset
00000000
Bit
Type
Description
7
R/W1S LOCKFCF (Lock Fan Speed Configuration). When set to 1, this bit locks the bits of the FSMCF
register by disabling writing to them (including the LOCKFCF bit itself). Once set, this bit can be cleared
by VDD3 Power-Up reset (or Hardware reset).
0: R/W bits are enabled for write (default)
1: All bits are RO
6-5
−
Reserved.
4
R/W or
RO
FANMON_EN2 (Fan Monitor Enable 2). When this bit is set to 1, the Fan Speed Monitor 2 is enabled
and the rate of pulses received at the FANTACH2 tachometer input is measured.
0: Disabled (default)
1: Enabled
3-2
−
Reserved.
1
R/W or
RO
FANMON_EN1 (Fan Monitor Enable 1). When this bit is set to 1, the Fan Speed Monitor 1 is enabled
and the rate of pulses received at the FANTACH1 tachometer input is measured.
0: Disabled (default)
1: Enabled
0
−
Reserved.



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