ADT7476 Analog Devices, Inc., ADT7476 Datasheet - Page 60

• Manufacturer Part Number: ADT7476
• Description: Dbcool Remote Thermal Controller And Voltage Monitor
• Manufacturer: Analog Devices, Inc.

ADT7476
Table 30. Voltage Limit Registers
Register Address
0x44
0x45
0x46
0x47
0x48
0x49
0x4A
0x4B
0x4C
0x4D
1
2
Table 31. Temperature Limit Registers
Register Address
0x4E
0x4F
0x50
0x51
0x52
0x53
1
2
Table 32. Fan Tachometer Limit Registers
Register Address
0x54
0x55
0x56
0x57
0x58
0x59
0x5A
0x5B
1
Setting the Configuration Register 1 LOCK bit has no effect on these registers.
High limits: An interrupt is generated when a value exceeds its high limit (>comparison). Low limits: An interrupt is generated when a value is equal to or below its low
limit (≤comparison).
Exceeding any of these temperature limits by 1°C causes the appropriate status bit to be set in the interrupt status register. Setting the Configuration Register 1 LOCK
bit has no effect on these registers.
High limits: An interrupt is generated when a value exceeds its high limit (>comparison). Low limits: An interrupt is generated when a value is equal to or below its low
limit (≤comparison).
Exceeding any of the TACH limit registers by 1 indicates that the fan is running too slowly or has stalled. The appropriate status bit is set in Interrupt Status Register 2
to indicate the fan failure. Setting the Configuration Register 1 LOCK bit has no effect on these registers.
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
1
Description
Remote 1 temperature low limit
Remote 1 temperature high limit
Local temperature low limit
Local temperature high limit
Remote 2 temperature low limit
Remote 2 temperature high limit
Description
TACH1 minimum low byte
TACH1 minimum high byte/single-channel ADC channel select
TACH2 minimum low byte
TACH2 minimum high byte
TACH3 minimum low byte
TACH3 minimum high byte
TACH4 minimum low byte
TACH4 minimum high byte
1
1
2
Description
2.5 V low limit
2.5 V high limit
V
V
V
V
5 V low limit
5 V high limit
12 V low limit
12 V high limit
CCP
CCP
CC
CC
Rev. B | Page 60 of 72
low limit
high limit
low limit
high limit
2
Power-On Default
0x00
0xFF
0x00
0xFF
0x00
0xFF
0x00
0xFF
0x00
0xFF
Power-On Default
0xFF
0xFF
0xFF
0xFF
Power-On Default
0x81
0x7F
0x81
0x7F
0x81
0x7F
0xFF
0xFF
0xFF
0xFF