Analog Devices ADT7460 Manual page 35

Address R/W Description
0x67 R/W Remote 1 Tem p T
0x68 R/W Local Temp T
MIN
0x69 R/W Remote 2 Tem p T
0x6A R/W Remote 1 THERM Limit
0x6B R/W Local THERM
Limit
0x6C R/W Remote 2 THERM Limit
0x6D R/W Remote 1 Loc al Hysteresis
0x6E R/W Remote 2 Tem p Hysteresis
0x6F R/W XNOR Tree Te st Enable
0x70 R/W Remote 1 Tem perature
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 Register 1
0x75 R/W Interrupt Mask Register 2
0x76 R/W Extended Resolution 1
0x77 R/W Extended Resolution 2
0x78 R/W Configuration Register 3
0x79 R THERM Status Register
0x7A R/W THERM Limit Register
0x7B R/W Fan Pulses per Revolution
0x7D R/W Configuration Register 4
0x7E R Test Register 1
0x7F R Test Register 2
Table 42. Voltage Reading Registers (Power-On Default = 0x00)
R egister Address R/W
0x20 Read-Only
0x22 Read-Only
These voltage readings are in twos com
If the extended resolution bits of these r
first. O nce the extended re solution regi
resolution registers and the MSB registers are frozen.
Table 43. Temperature Reading Registers (Power-On Default = 0x80)
R egister Address R/W
0x25 Read-Only
0x26 Read-Only
0x27 Read-Only
These voltage readings are in twos com
1
Note that a re ading of 0x80 in a temperature r
are also b eing read, the extend ed resolution re
reading registers are frozen until read. Both the extended resolution registers and the MSB registers are frozen.
Bit 7 Bit 6
7 6
MIN
7 6
7 6
MIN
7 6
7 6
7 6
HYSR1 H YSR1
HYSR2 H YSR2
RES RES
7 6
7 6
7 6
SHDN CONV
OOL R2T
D2 D1
RES RES
TDM2 TDM2
DC4 DC3
TMR TMR
LIMT LIMT
FAN4 FAN4
RES RES
Description
2.5 V Reading (8 MSBs of reading)
V Reading: Measures V through the V
CC
plement for mat.
eadings are also being read, the extended resolution registers (Reg. 0x76, 0x77)
sters are rea d, the associated MSB reading registers are frozen until read. Both t
Description
Remote 1 Temperature Reading
Local Temperature Reading (8 MSBs of reading)
Remote 2 Temperature Reading (8 MSBs of reading)
plement form at.
eading register indicates a diode fault (open or short) on that channel. If the exte
gisters (Reg. 0x 76, 0x77) should be read first. Once the extended resolution regis
Bit 5 Bit 4 Bit 3 Bit 2
5 4 3 2
5 4 3 2
5 4 3 2
5 4 3 2
5 4 3 2
5 4 3 2
HYSR1 HYSR1 H YSL HYSL
HYSR2 HYSR2 RES RES
RES RES RES RES
5 4 3 2
5 4 3 2
5 4 3 2
ATTN AVG AIN4 AIN3
LT R1T RES V
CC
F4P FAN3 FAN2 FAN1
V V RES RES
CC CC
LTMP LTMP TDM1 TDM1
DC2 DC1 FAST BOOST
TMR TMR TMR TMR
LIMT LIMT LIMT LIMT
FAN3 FAN3 FAN2 FAN2
RES RES AINL AINL
DO NOT WRITE TO THESE REGISTERS
DO NOT WRITE TO THESE REGISTERS
pin (8 MSBs of reading)
CC CC
1
(8 MSBs of reading)
Rev. C | Page 35 of 52
Bit 1 Bit 0 Default
1 0 0x5A
1 0 0x5A
1 0 0x5A
1 0 0x64
1 0 0x64
1 0 0x64
HYSL HYSL 0x44
RES RES 0x40
RES XEN 0x00
1 0 0x00
1 0 0x00
1 0 0x00
AIN2 AIN1 0x00
RES 2.5V 0x00
OVT RES 0x00
2.5V 2.5V 0x00
RES RES 0x00
THERM ALERT 0x00
ENABLE
TMR ASRT/ 0x00
TMR
LIMT LIMT 0x00
FAN1 FAN1 0x55
RES AL2.5V 0x00
0x00
0x00
should be read
he extended
nded resolution bits of these readings
ters are read, all associated MSB
ADT7460
Lockable?
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES