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ADT7473
Address
R/W
Description
0x6C
R/W
Remote 2 THERM
Temp Limit
0x6D
R/W
Remote 1 and
Local Temp/T
Hysteresis
0x6E
R/W
Remote 2
Temp/T
MIN
Hysteresis
0x6F
R/W
XNOR Tree Test
Enable
0x70
R/W
Remote 1
Temperature
Offset
0x71
R/W
Local
Temperature
Offset
0x72
R/W
Remote 2
Temperature
Offset
0x73
R/W
Configuration
Register 2
0x74
R/W
Interrupt Mask 1
Register
0x75
R/W
Interrupt Mask 2
Register
0x76
R/W
Extended
Resolution 1
0x77
R/W
Extended
Resolution 2
0x78
R/W
Configuration
Register 3
0x79
R
THERM Timer
Status Register
0x7A
R/W
THERM Timer
Limit Register
0x7B
R/W
TACH Pulses per
Revolution
0x7C
R/W
Configuration
Register 5
0x7D
R/W
Configuration
Register 4
0x7E
R
Test Register 1
0x7F
R
Test Register 2
Table 16. Voltage Reading Registers (Power-On Default = 0x00)
Register Address
R/W
0x21
Read-only
0x22
Read-only
1
If the extended resolution bits of these readings are also being read, the extended resolution registers (Reg. 0x76, 0x77) must be read first. Once the extended
resolution registers have been read, the associated MSB reading registers are frozen until read. Both the extended resolution registers and the MSB registers are
frozen.
2
If V
Lo (Bit 1 of the Dynamic T
CCP
MIN
3
V
(Pin 3) is the supply voltage for the ADT7473.
CC
Bit 7
Bit 6
Bit 5
7
6
5
HYSR1
HYSR1
HYSR1
MIN
HYSR2
HYSR2
HYSR2
RES
RES
RES
7
6
5
7
6
5
7
6
5
SHDN
CONV
ATTN
OOL
R2T
LT
D2
D1
F4P
RES
RES
V
CC
TDM2
TDM2
LTMP
DC4
DC3
DC2
TMR
TMR
TMR
LIMT
LIMT
LIMT
FAN4
FAN4
FAN3
R2
Local
R1
THERM
THERM
THERM
RES
BpAtt
RES
V
CCP
Description
Reflects the voltage measurement at the V
Reflects the voltage measurement at the V
Control Register 1, 0x36) is set, V
CCP
Bit 4
Bit 3
4
3
HYSR1
HYSL
HYRS
RES
RES
RES
4
3
4
3
4
3
AVG
FAN3
Detect
RIT
RES
FAN3
FAN2
V
V
CC
CCP
LTMP
TDM1
DC1
FAST
TMR
TMR
LIMT
LIMT
FAN3
FAN2
RES
GPIOP
RES
Max/Full
on
THERM
Do not write to these registers
Do not write to these registers
1
can control the sleep state of the ADT7473.
Rev. 0 | Page 58 of 76
Bit 2
Bit 1
Bit 0
2
1
0
HYSL
HYSL
HYSL
RES
RES
RES
RES
RES
XEN
2
1
0
2
1
0
2
1
0
FAN2
FAN1
Fan
Detect
Detect
Presence
DT
V
V
RES
CC
CCP
FAN1
OVT
RES
V
RES
RES
CCP
TDM1
RES
RES
BOOST
THERM
ALERT
Enable
TMR
TMR
ASRT/TMR
O
LIMT
LIMT
LIMT
FAN2
FAN1
FAN1
GPIOD
Temp
TWOS
Offset
COMPL
THERM
Pin 9
Pin 9 Func
Func
Disable
input on Pin 14 (8 MSBs of reading).
CCP
input on Pin 3 (8 MSBs of reading).
CC
Default
Lockable?
0xA4
Yes
0x44
Yes
0x40
Yes
0x00
Yes
0x00
Yes
0x00
Yes
0x00
Yes
0x00
Yes
0x00
0x00
0x00
0x00
0x00
Yes
0x00
0x00
0X55
0x00
Yes
0x00
Yes
0x00
Yes
0x00
Yes
2
3
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