REV. A
40
ADM1027
Table IV. ADM1027 Registers
Address R/W Description
Bit 7
Bit 6
Bit 5
Bit 4 Bit 3
Bit 2
Bit 1
Bit 0
Default Lockable?
0x20
R
2.5 V Reading
9
8
7
6
5
4
3
2
0x00
0x21
R
V
CCP
Reading
9
8
7
6
5
4
3
2
0x00
0x22
R
V
CC
Reading
9
8
7
6
5
4
3
2
0x00
0x23
R
5 V Reading
9
8
7
6
5
4
3
2
0x00
0x24
R
12 V Reading
9
8
7
6
5
4
3
2
0x00
0x25
R
Remote 1 Temperature
9
8
7
6
5
4
3
2
0x80
0x26
R
Local Temperature
9
8
7
6
5
4
3
2
0x80
0x27
R
Remote 2 Temperature
9
8
7
6
5
4
3
2
0x80
0x28
R
TACH1 Low Byte
7
6
5
4
3
2
1
0
0x00
0x29
R
TACH1 High Byte
15
14
13
12
11
10
9
8
0x00
0x2A
R
TACH2 Low Byte
7
6
5
4
3
2
1
0
0x00
0x2B
R
TACH2 High Byte
15
14
13
12
11
10
9
8
0x00
0x2C
R
TACH3 Low Byte
7
6
5
4
3
2
1
0
0x00
0x2D
R
TACH3 High Byte
15
14
13
12
11
10
9
8
0x00
0x2E
R
TACH4 Low Byte
7
6
5
4
3
2
1
0
0x00
0x2F
R
TACH4 High Byte
15
14
13
12
11
10
9
8
0x00
0x30
R/W PWM1 Current Duty Cycle
7
6
5
4
3
2
1
0
0xFF
0x31
R/W PWM2 Current Duty Cycle
7
6
5
4
3
2
1
0
0xFF
0x32
R/W PWM3 Current Duty Cycle
7
6
5
4
3
2
1
0
0xFF
0x3D
R
Device ID Register
7
6
5
4
3
2
1
0
0x27
0x3E
R
Company ID Number
7
6
5
4
3
2
1
0
0x41
0x3F
R
Revision Number
VER
VER
VER
VER STP
STP
STP
STP
0x60
0x40
R/W Configuration Register 1
V
CC
TODIS FSPDIS V ?I FSPD RDY
LOCK STRT
0x00
Yes
0x41
R
Interrupt Status Register 1
OOL
R2T
LT
R1T
5 V
V
CC
V
CCP
2.5 V
0x00
0x42
R
Interrupt Status Register 2
D2
D1
5
FAN3 FAN2 FAN1 OVT
12 V
0x00
0x43
R/W VID Register
7
6
5
VID4 VID3 VID2 VID1 VID0
0xFF
0x44
R/W 2.5 V Low Limit
7
6
5
4
3
2
1
0
0x00
0x45
R/W 2.5 V High Limit
7
6
5
4
3
2
1
0
0xFF
0x46
R/W V
CCP
Low Limit
7
6
5
4
3
2
1
0
0x00
0x47
R/W V
CCP
High Limit
7
6
5
4
3
2
1
0
0xFF
0x48
R/W V
CC
Low Limit
7
6
5
4
3
2
1
0
0x00
0x49
R/W V
CC
High Limit
7
6
5
4
3
2
1
0
0xFF
0x4A
R/W 5 V Low Limit
7
6
5
4
3
2
1
0
0x00
0x4B
R/W 5 V High Limit
7
6
5
4
3
2
1
0
0xFF
0x4C
R/W 12 V Low Limit
7
6
5
4
3
2
1
0
0x00
0x4D
R/W 12 V High Limit
7
6
5
4
3
2
1
0
0xFF
0x4E
R/W Remote 1 Temp Low Limit
7
6
5
4
3
2
1
0
0x81
0x4F
R/W Remote 1 Temp High Limit
7
6
5
4
3
2
1
0
0x7F
0x50
R/W Local Temp Low Limit
7
6
5
4
3
2
1
0
0x81
0x51
R/W Local Temp High Limit
7
6
5
4
3
2
1
0
0x7F
0x52
R/W Remote 2 Temp Low Limit
7
6
5
4
3
2
1
0
0x81
0x53
R/W Remote 2 Temp High Limit
7
6
5
4
3
2
1
0
0x7F
0x54
R/W TACH1 Minimum Low Byte 7
6
5
4
3
2
1
0
0xFF
0x55
R/W TACH1 Minimum High Byte 15
14
13
12
11
10
9
8
0xFF
0x56
R/W TACH2 Minimum Low Byte 7
6
5
4
3
2
1
0
0xFF
0x57
R/W TACH2 Minimum High Byte 15
14
13
12
11
10
9
8
0xFF
0x58
R/W TACH3 Minimum Low Byte 7
6
5
4
3
2
1
0
0xFF
0x59
R/W TACH3 Minimum High Byte 15
14
13
12
11
10
9
8
0xFF
0x5A
R/W TACH4 Minimum Low Byte 7
6
5
4
3
2
1
0
0xFF
0x5B
R/W TACH4 Minimum High Byte 15
14
13
12
11
10
9
8
0xFF
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