ADT7475_13 Datasheet, PDF (41/58 Pages) ON Semiconductor – Remote Thermal Monitor and Fan Controller

ADT7475
Register Tables
Table 45. ADT7475 REGISTERS
Addr R/W
Desc
0x10 R/W Configuration
Register 6
0x11
R
Configuration
Register 7
0x21
R
V_CCP
Reading
0x22
R
V_CC Reading
0x25
R
Remote 1
Temp
0x26
R
Local Temp
0x27
R
Remote 2
Temp
0x28
R
TACH1 Low
Byte
0x29
R
TACH1 High
Byte
0x2A
R
TACH2 Low
Byte
0x2B
R
TACH2 High
Byte
0x2C R
TACH3 Low
Byte
0x2D
R
TACH3 High
Byte
0x2E
R
TACH4 Low
Byte
0x2F
R
TACH4 High
Byte
0x30 R/W
PWM1
Current Duty
Cycle
0x31 R/W
PWM2
Current Duty
Cycle
0x32 R/W
PWM3
Current Duty
Cycle
0x38 R/W PWM1 Max
Duty Cycle
0x39 R/W PWM2 Max
Duty Cycle
0x3A R/W
PWM3 Max
Duty Cycle
0x3D R
Device ID
Reg
0x3E
R
Company ID
Number
0x40 R/W Config Reg 1
0x41
R
Interrupt
Status Reg 1
0x42
R
Interrupt
Status Reg 2
0x46 R/W
V_CCP Low
Limit
0x47 R/W
V_CCP High
Limit
0x48 R/W
V_CC Low
Limit
Bit 7
Extra
Slow
RES
9
9
9
9
9
7
15
7
15
7
15
7
15
7
7
7
7
7
7
7
7
RES
OOL
D2
7
7
7
Bit 6
V_CCP
Low
RES
8
8
8
8
8
6
14
6
14
6
14
6
14
6
Bit 5
RES
RES
7
7
7
7
7
5
13
5
13
5
13
5
13
5
Bit 4
RES
RES
6
6
6
6
6
4
12
4
12
4
12
4
12
4
Bit 3
THERM
in Manual
RES
Bit 2
SLOW
Remote 2
RES
5
4
Bit 1
SLOW
Local
RES
3
Bit 0
SLOW
Remote 1
Dis
THERM
Hys
2
De-
fault
0x00
0x00
0x00
Lock-
able
−
−
−
5
4
3
2
0x00
−
5
4
3
2
0x80
−
5
4
3
2
0x80
−
5
4
3
2
0x80
−
3
2
1
0
0x00
−
11
10
9
8
0x00
−
3
2
1
0
0x00
−
11
10
9
8
0x00
−
3
2
1
0
0x00
−
11
10
9
8
0x00
−
3
2
1
0
0x00
−
11
10
9
8
0x00
−
3
2
1
0
0x00
−
6
5
4
3
2
1
0
0x00
−
6
5
4
3
2
1
0
0x00
−
6
6
6
6
6
TODIS
R2T
D1
6
6
6
5
5
5
5
5
FSPDIS
LT
F4P
5
5
5
4
4
4
4
4
Vx1
R1T
FAN3
4
4
4
3
3
3
3
3
FSPD
RES
FAN2
3
3
3
2
2
2
2
2
RDY
V_CC
FAN1
2
2
2
1
1
1
1
1
LOCK
V_CCP
OVT
1
1
1
0
0
0
0
0
STRT
RES
RES
0
0
0
0xFF
−
0xFF
−
0xFF
−
0x75
−
0x41
−
0x04 Yes
0x00
−
0x00
−
0x00
−
0xFF
−
0x00
−
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