MAX6615 MAXIM [Maxim Integrated Products], MAX6615 Datasheet - Page 13

• Manufacturer Part Number: MAX6615
• Description: Dual-Channel Temperature Monitors and Fan-Speed Controllers with Thermistor Inputs
• Manufacturer: MAXIM [Maxim Integrated Products]

Table 3. Register Map (continued)
R/W ADD
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
Fan-Speed Controllers with Thermistor Inputs
0Dh
0Eh
1Ah
1Bh
0Fh
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
( N ote 1)
STATE
POR
0000
000x
0000
000x
0000
0000
0000
0000
0000
000x
1011
0101
0101
010x
0000
0000
1111
1111
1111
1111
1111
1111
1111
1111
01xx
xx00
000*
xxxx
xx11
111*
______________________________________________________________________________________
Dual-Channel Temperature Monitors and
configuration
temperature
temperature
Tach1 value
Tach2 value
FUNCTION
GPIO value
Tach1 limit
Tach2 limit
Duty-cycle
Duty-cycle
Thermistor
Channel 1
Channel 2
frequency
instantan-
eous duty
instantan-
eous duty
step size
fan-start
fan-start
function
change
register
register
register
register
register
PWM1
PWM2
rate of
select
cycle
cycle
PWM
GPIO
offset
Fan
Hysteresis:
Fan 1 MSB
Fan 1 MSB
0 = 5°C, 1
(128/240)
(128/240)
Th1 MSB
Select A
= 10°C
(sign)
MSB
MSB
MSB
MSB
D7
—
—
—
—
—
—
Select B
step : 0 =
1
Temp
1°C,
D6
—
—
—
—
—
—
—
—
—
—
—
—
—
2°C
output; 1
control 1
Select C
GPIO5:
= input
= Ch 1
GPIO5
Fan 1:
Fan 1
LSB
0 =
D5
—
—
—
—
—
—
—
—
—
—
control 1
output; 1
Th1 LSB
GPIO4:
= input
= Ch 2
GPIO4
Fan 1:
Fan 2
Fan 1
(2°C)
MSB
LSB
0 =
D4
—
—
—
—
—
—
—
—
—
Th2 MSB
control 1
output; 1
GPIO3:
= input
= Ch 1
GPIO3
Fan 2:
Fan 2
(sign)
MSB
0 =
D3
—
—
—
—
—
—
—
—
—
—
control 1
output; 1
GPIO2:
= input
= Ch 2
GPIO2
Fan 2:
Fan 2
LSB
0 =
D2
—
—
—
—
—
—
—
—
—
—
—
output; 1
(2/240)
(2/240)
GPIO1:
= input
GPIO1
LSB
LSB
0 =
D1
—
—
—
—
—
—
—
—
—
—
—
output; 1
Th2 LSB
GPIO0:
= input
GPIO0
Fan 2
(2°C)
LSB
LSB
LSB
0 =
D0
—
—
—
—
—
—
—
—
—
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