Dual-Channel Temperature Monitors and
Fan-Speed Controllers with Thermistor Inputs
12   ______________________________________________________________________________________
Table 3. Register Map
R/W ADD
POR
STATE
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
R
00h
0000
0000
Temperature
channel 1
MSB
(128癈)






LSB (1癈)
R
01h
0000
0000
Temperature
channel 2
MSB
(128癈)






LSB (1癈)
R/W   02h
0001
1000
C onfi g
ur ati on
b yte
Standby:
0 = run;
1 =
standby
POR:
1 = reset
Timeout:
0 =
enabled;
1 =
disabled
Fan 1
PWM
invert
Fan 2
PWM
invert
Min duty
cycle: 0 =
0%; 1 =
fan-start
duty
cycle
Temp
Ch2
sources:
1 = local;
0 =
remote2
Spin-up
disable: 0
= enable;
1 =
disable
R/W   03h
0110
1110
Temperature
channel 1
OT limit
MSB






LSB (1癈)
R/W   04h
0101
0000
Temperature
channel 2
OT limit
MSB






LSB (1癈)
R
05h
00xx
xxxx
OT status
C hannel 1:
1 = faul t
C hannel
2: 1 =
faul
t






R/W   06h
00xx
xxxx
OT mask
C hannel 1:
1 =
m asked
Channel
2: 1 =
masked






R/W   07h
0110
000x
96 =
40%
PWM1 start
duty cycle
MSB
(128/240)





LSB
(2/240)

R/W   08h
0110
000x
96 =
40%
PWM2 start
duty cycle
MSB
(128/240)





LSB
(2/240)

R/W   09h
1111
000x
240 =
100%
PWM1 max
duty cycle
MSB
(128/240)





LSB
(2/240)

R/W   0Ah
1111
000x
240 =
100%
PWM2 max
duty cycle
MSB
(128/240)





LSB
(2/240)

R/W   0Bh
0000
000x
PWM1 target
duty cycle
MSB
(128/240)





LSB
(2/240)

R/W   0Ch
0000
000x
PWM2 target
duty cycle
MSB
(128/240)





LSB
(2/240)

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