ADT7473_11 ONSEMI [ON Semiconductor], ADT7473_11 Datasheet - Page 62

• Manufacturer Part Number: ADT7473_11
• Description: dbCOOL Remote Thermal Monitor and Fan Control
• Manufacturer: ONSEMI [ON Semiconductor]

Table 30. Fan Tachometer Limit Registers
1. Exceeding any of the TACH limit registers by 1 indicates that the fan is running slowly or has stalled. The appropriate status bit is set in
Table 31. Register 0x55 — TACH1 Minimum High Byte (Power−On Default = 0xFF)
Table 32. PWM Configuration Registers
1. These registers become read−only when the Configuration Register 1 lock bit is set. Any further attempts to write to these registers have
Bit No.
[4:0]
[7:5]
Register Address
Interrupt Status Register 2 to indicate the fan failure. Setting the Configuration Register 1 lock bit has no effect on these registers.
no effect.
Register Address
0x5C
0x5D
0x5E
0x54
0x55
0x56
0x57
0x58
0x59
0x5A
0x5B
Mnemonic
Reserved
SCADC
R/W (Note 1)
Read−only
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
These bits are reserved when Bit 6 of Configuration Register 2 (0x73) is set (single−channel
ADC mode). Otherwise, these bits represent Bits [4:0] of the TACH1 minimum high byte.
When Bit 6 of Configuration Register 2 (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.
PWM1 configuration.
PWM2 configuration.
PWM3 configuration.
(Note 1)
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.
http://onsemi.com
Description
62
Description
Description
ADT7473: 0x82
ADT7473−1: 0x62
ADT7473: 0x82
ADT7473−1: 0x62
ADT7473: 0x82
ADT7473−1: 0x62
Power−On Default
Power−On Default
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF