Analog Devices dBCool ADT7473 Manual page 60

ADT7473
Address R/W Description
0x6C R /W Re ote 2 THERM m
Tem p Limit
0x6D R/W Rem ote 1 and
Loca l Temp/T
Hyst eresis
0x6E R/W Re ote 2 m
Tem p/T
MIN
Hyst eresis
0x6F R/W XNO R Tree Test
Enab le
0x70 R/W Remote 1
Tem perature
Offs et
0x71 R/W Loca l
Temperatu re
Of fs et
0x72 R/W Rem ote 2
Tem perature
Offs et
0x73 R/W Con figuration
Re ster 2 gi
0x74 R/W Inte rrupt Mask
Register 1
0x75 R/W Inte rrupt Mask
Regi ster 2
0x76 R/W Ext nded e
Reso lution 1
0x77 R/W Exte nded
Reso lution 2
0x78 R/W Con figuration
Reg ister 3
0x79 R TH RM Timer
E
Status Register
0x7A R/W THERM Timer
t Register
Limi
0x7B R/W TA H Pulses per C
Revo lution
0x7C R/W Con figuration
Regi ster 5
0x7D R/W Co figuration n
Regi ster 4
0x7E R Test R egister 1
0x7F R Test Register 2
Table 18. 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 (Register 0x76 and Register 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
R1T 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. A | Page 60 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/TMRO
LIMT LIMT LIMT
FAN2 FAN1 FAN1
GPIOD Temp TWOS
Offset COMPL
THERM PIN9 PIN9FUNC
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