W83697HG-TR Nuvoton Technology Corporation of America, W83697HG-TR Datasheet - Page 59

• Manufacturer Part Number: W83697HG-TR
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83697HG-TR

• Lead Free Status / RoHS Status: Supplier Unconfirmed

FAN 1 Duty Cycle Select Register-- 01h (Bank 0)
Power on default [7:0] 1111,1111 b
FAN 2 Pre-Scale Register-- Index 02h
Power on default [7:0] = 0000,0001 b
PWM frequency = (Input Clock / Pre-scale) / 256
BIT
BIT
7-0
6-0
7
F1_DC[7:0]
PWM_CLK_SEL2
PRE_SCALE2[6:0]
NAME
NAME
Read/Write
READ/WRITE
Read/Write
Read/Write
READ/WRIT
E
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.
PWM 2 Input Clock Select. This bit select Fan 2 input
clock to pre-scale divider.
0: 1 MHz
1: 125 KHz
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
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DESCRIPTION
DESCRIPTION
W83697HF/ HG