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參數資料
型號: W83697HF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: WINBOND I/O
中文描述: MULTIFUNCTION PERIPHERAL, PQFP128
封裝: PLASTIC, QFP-128
文件頁數: 134/167頁
文件大小: 1094K
代理商: W83697HF
W83697HF/F
Publication Release Date: Feb. 2002
- 125 - Revision 0.70
9.7.51 FAN 1 Duty Cycle Select Register-- 01h (
Bank 0
)
Power on default [7:0] 1111,1111 b
Bit
Name
Read/Write
Description
7-0
F1_DC[7:0]
Read/Write
FanPWM1 Duty Cycle.
This 8-bit register determines
the number of input clock cycles, out of 256-cycle period,
during which the PWM output is high. During smart fan 1
control mode, read this register will return smart fan duty
cycle.
00h: PWM output is always logical Low.
FFh: PWM output is always logical High.
XXh: PWM output logical High percentage is
(XX/256*100%) during one cycle.
9.7.52 FAN 2 Pre-Scale Register-- Index 02h
Power on default [7:0] = 0000,0001 b
Bit
Name
Read/Write
Description
7
PWM_CLK_SEL2
Read/Write
PWM 2 Input Clock Select.
This bit select Fan 2 input
clock to pre-scale divider.
0: 1 MHz
1: 125 KHz
6-0
PRE_SCALE2[6:0]
Read/Write
Fan 2 Input Clock Pre-Scale.
The divider of input clock
is the number defined by pre-scale. Thus, writing 0
transfers the input clock directly to counter. The
maximum divider is 128 (7Fh).
01h : divider is 1
02h : divider is 2
03h : divider is 3
:
:
PWM frequency = (Input Clock / Pre-scale) / 256
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W83697 WINBOND I/O
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