w83637hg Winbond Electronics Corp America, w83637hg Datasheet - Page 81

• Manufacturer Part Number: w83637hg
• Description: Winbond Lpc I/o Lpc I/o
• Manufacturer: Winbond Electronics Corp America

FANPWM3 Output Frequency Configuration Register—Index10h (Bank 0)
Register Location:
Power on Default Value
Attribute:
Size:
Bit 7: FANPWM3 Clock Source Select. This bit selects the clock source of FANPWM3 output
Bit 6-1: FANPWM3 Pre-Scale divider. This is the divider of clock source of PWM output frequency. The
FANPWM3 Duty Cycle Select Register-- 11h (Bank 0)
Register Location:
Power on Default Value
Attribute:
Size:
Bit 7-0: FANPWM3 duty cycle control. Write FF, duty cycle is 100%. Write 00, duty cycle is 0%.
FAN Configuration Register II -- Index 12h (Bank 0)
frequency.
Set to 0, select 24 MHz.
Set to 1, select 180 KHz.
maximum divider is 128 (7Fh). This divider should not be set to 0.
PWM frequency =
7
7
6
10h
01h
Read Only
8 bits
11h
FFh
Read/Write
8 bits
6
Pr
5
5
e
SourceCloc
4
_
4
scaleDivid
3
3
2
2
k
1
- 76 -
1
er
0
∗
0
256
1
PWM_CLK_SEL3
Publication Release Date: March, 2006
W83637HF/HG
Revision 1.6