W83637HF Winbond Electronics Corp America, W83637HF Datasheet - Page 73

• Manufacturer Part Number: W83637HF
• Description: Description = LPC I/o Plus H/w Monitor, Smart Fan Control, Smart Card (PC/SC) Reader, Memory Stick Reader I/F, Sd/mmc Card Reader I/f ;; Package = QFP 128
• Manufacturer: Winbond Electronics Corp America

FANPWM1 Duty Cycle Select Register-- 01h (Bank 0)
Register Location:
Power on Default Value
Attribute:
Size:
Bit 7-0: FANPWM1 duty cycle control. Write FF, duty cycle is 100%. Write 00, duty cycle is 0%.
FANPWM2 Output Frequency Configuration Register—Index02h (Bank 0)
Register Location:
Power on Default Value
Attribute:
Size:
Bit 7: FANPWM2 Clock Source Select. This bit selects the clock source of FANPWM2 output
Bit 6-1: FANPWM2 Pre-Scale divider. This is the divider of clock source of PWM output frequency. The
Set to 0, select 24 MHz.
Set to 1, select 180 KHz.
frequency.
maximum divider is 128 (7Fh). This divider should not be set to 0.
PWM frequency =
7
7
6
01h
FFh
Read/Write
8 bits
02h
01h
Read Only
8 bits
6
Pr
5
e
5
SourceCloc
_
4
scaleDivid
4
3
3
2
2
k
er
1
- 68 -
1
∗
0
256
0
1
PWM_CLK_SEL1
PWM_SCALE1
PWM1_Duty
Publication Release Date: June 25, 2003
W83637HF
Revision 1.3