ADT7468 Analog Devices, Inc., ADT7468 Datasheet - Page 70

• Manufacturer Part Number: ADT7468
• Description: Dbcool Remote Thermal Controller And Voltage Monitor
• Manufacturer: Analog Devices, Inc.

ADT7468
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
Table 33. Register 0x55—TACH 1 Minimum High Byte (Power-On Default = 0xFF)
Bits
<4:0>
<7:5>
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
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
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
bit has no effect on these registers.
low limit (≤comparison).
to indicate the fan failure. Setting the Configuration Register 1 lock bit has no effect on these registers.
Name
Reserved
SCADC
R/W
Read only
Read/write
R/W
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
R/W
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
Description
These bits are reserved when Bit 6 of Configuration 2 Register (0x73) is set (single-channel ADC mode).
Otherwise, these bits represent Bits <4:0> of the TACH1 minimum high byte.
When Bit 6 of Config 2 Register (0x73) is set (single channel ADC mode), these bits are used to select the
only channel from which the ADC makes measurements. Otherwise, these bits represent Bits <7:5> of
the TACH1 minimum high byte.
1
1
Description
Remote 1 temperature low limit
Local temperature low limit
Local temperature high limit
Remote 2 temperature low 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
TACH4 minimum low byte
Remote 1 temperature high limit
Remote 2 temperature high limit
TACH3 minimum high byte
TACH4 minimum high byte
Rev. A | Page 70 of 84
2
0x81
Power-On Default
0xFF
0xFF
0xFF
Power-On Default
0x81
0x7F
0x7F
0x81
0x7F
0xFF
0xFF
0xFF
0xFF
0xFF