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PC87366 Datasheet(PDF) 125 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza PC87366
Descripción Electrónicos  128-Pin LPC SuperI/O with System Hardware Monitoring, MIDI and Game Ports
PDF  240 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87366 Datasheet(HTML) 125 Page - National Semiconductor (TI)

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4.0 Fan Speed Control (Continued)
125
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4.3.3
Fan Speed Control Duty Cycle Register (FCDCR)
Location:
Device specific
Type:
R/W
4.4
FAN SPEED CONTROL BITMAP
Bit
76543210
Name
Duty Cycle Value
Reset
11111111
Bit
Description
7-0
Duty Cycle. The binary value of this 8-bit field determines the number of clock cycles, out of a 256-cycle period,
during which the PWM output is high (while FANOUT is either equal to or the inverse of the PWM output,
depending on the Inverse FANOUT configuration bit).
00h: PWM output is continuously low
01h - FEh: PWM output is high for [Duty Cycle Value] clock cycles and low for [256-Duty Cycle Value] clock
cycles
FFh: PWM output is continuously high
Register
Bits
Offset
Mnemonic
76543210
Device
specific
Note 1.
Note 1. The location of this register is defined in the
Device Architecture and Configuration chapter.
FCPSR
Clock
Select
Pre-Scale Value
Device
specific
Note 1.
FCDCR
Duty Cycle Value



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