Rainbow Electronics MAX6616 - Manual (Page 12)

MAX6615/MAX6616
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°C)
— — — — — — LSB (1°C)
R 01h
0000
0000 Temperature
channel 2
MSB
(128°C)
— — — — — — LSB (1°C)
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°C)
R/ W 04h
0101
0000
Temperature
channel 2
OT limit
MSB — — — — — — LSB (1°C)
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)
—