MAX6653AEE View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX6653AEE Datasheet PDF : 24 Pages
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Temperature Monitors and
PWM Fan Controllers
Register Summary (continued)
Addr(H)
23
24
25
READ/WRITE POR STATE
DESCRIPTION
Fan filter register:
Bit 7: Fan spin-up disable:
0: Spin-up enabled; 1: spin-up disabled.
Bits [6:5]: Fan ramp rate: These bits set the amount the PWM duty cycle can change
on each monitoring cycle:
R/W
0101 1101
00 = 1 (0.416%)
01 = 2 (0.833%)
10 = 4 (1.667%) (default)
11 = 8 (3.333%)
Bits [4:2]: Temperature measurement rate (see Table 5).
Bit 1: Unused.
Bit 0: Fan filter enable. Setting the bit to 1 enables the fan filter function.
Local temp TMIN/ TRANGE register:
Bits [7:3]: Local TMIN: Contains the temp threshold for the automatic fan-speed control
mode. When the local temperature exceeds this value, the PWM output
becomes active:
00000 = 00C
00001 = +40C
|
01000 = +320C (default)
R/W
0100 0001
|
11110 = +1200C
11111 = +1240C
Bits [2:0]: Local TRANGE: Contains the local temperature range for automatic fan-
speed control mode. When the temperature reaches TMIN + TRANGE, the
PWM duty cycle reaches 100%:
000 = +50C
001 = +100C (default)
010 = +200C
011 = +400C
100 = +800C
Remote temp TMIN/TRANGE register:
Bits [7:3]: Remote TMIN. Contains the temp threshold for the automatic fan-speed
control mode. When the remote temperature exceeds this value, the PWM
output becomes active.:
00000 = 00C
00001 = +40C
|
01100 = +480C (default)
R/W
0110 0001
|
11110 = +1200C
1111 = +1240C
Bits [2:0]: Remote TRANGE: Contains the remote temperature range for automatic fan-
speed control mode. When the temperature reaches TMIN + TRANGE, the
PWM duty cycle reaches 100%:
000 = +50C
001 = +100C (default)
010 = +200C
011 = +400C
100 = +800C
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