ADT7460ARQZ-RL7 ONSEMI [ON Semiconductor], ADT7460ARQZ-RL7 Datasheet - Page 43

• Manufacturer Part Number: ADT7460ARQZ-RL7
• Description: dBCOOL Remote Thermal Monitor and Fan Controller
• Manufacturer: ONSEMI [ON Semiconductor]

1. If this register is read, this register and the registers holding the MSB of each reading are frozen until read.
1. If this register is read, this register and the registers holding the MSB of each reading are frozen until read.
1. This register becomes read−only when the Configuration Register 1 lock bit is set to 1. Further attempts to write to this register have no effect.
Table 69. Register 0x75 — Interrupt Mask Register 2 (Power−On Default = 0x00)
Table 70. Register 0x76 — Extended Resolution Register 1
Table 71. Register 0x77 — Extended Resolution Register 2
Table 72. Register 0x78 — Configuration Register 3 (Power−On Default = 0x00)
Bit No.
Bit No.
Bit No.
Bit No.
<1:0>
<3:2>
<5:4>
<7:6>
<1:0>
<3:2>
<5:4>
<7:6>
<0>
<1>
<2>
<3>
<4>
<5>
<6>
<7>
0
1
2
3
4
5
6
7
Mnemonic
Mnemonic
Mnemonic
Mnemonic
ENABLE
THERM
BOOST
ALERT
TDM1
TDM2
FAN1
FAN2
FAN3
LTMP
FAST
RES
OVT
2.5V
RES
RES
RES
DC1
DC2
DC3
DC4
F4P
V
D1
D2
CC
Read−only
Read−only
Read−only
Read−only
Read−only
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
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reserved for future use.
A 1 masks SMBALERT for overtemperature THERM conditions.
A 1 masks SMBALERT for a Fan 1 fault.
A 1 masks SMBALERT for a Fan 2 fault.
A 1 masks SMBALERT for a Fan 3 fault.
A 1 masks SMBALERT for a Fan 4 fault. If the TACH4 pin is being used as the THERM input,
this bit masks SMBALERT for a THERM timer event.
A 1 masks SMBALERT for a diode open or short on Remote 1 channel.
A 1 masks SMBALERT for a diode open or short on Remote 2 channel.
2.5 V LSBs. Holds the 2 LSBs of the 10−bit 2.5 V measurement.
Reserved for future use.
V
Reserved for future use.
Reserved for future use.
Remote 1 Temperature LSBs. Holds the 2 LSBs of the 10−bit Remote 1 temperature
measurement.
Local Temperature LSBs. Holds the 2 LSBs of the 10−bit local temperature measurement.
Remote 2 Temperature LSBs. Holds the 2 LSBs of the 10−bit Remote 2 temperature
measurement.
ALERT = 1, Pin 5 (PWM2/ SMBALERT) is configured as an SMBALERT interrupt output to
indicate out−of−limit error conditions.
THERM ENABLE = 1 enables THERM monitoring functionality on Pin 9 when it is configured
as THERM. When THERM is asserted, fans can be run at full speed (if the BOOST bit is set),
or a timer can be triggered to time how long THERM has been asserted for.
BOOST = 1, assertion of THERM causes all fans to run at 100% duty cycle for fail−safe cooling.
FAST = 1 enables fast TACH measurements on all channels. This increases the TACH
measurement rate from once per second, to once every 250 ms (4×).
DC1 = 1 enables TACH measurements to be continuously made on TACH1.
DC2 = 2 enables TACH measurements to be continuously made on TACH2.
DC3 = 1 enables TACH measurements to be continuously made on TACH3.
DC4 = 1 enables TACH measurements to be continuously made on TACH4.
CC
LSBs. Holds the 2 LSBs of the 10−bit V
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ADT7460
43
(Note 1)
Description
Description
Description
Description
CC
measurement.
(Note 1)