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ADT7476
Table 79. REGISTER 0X75 ? INTERRUPT MASK REGISTER 2 (POWER-ON DEFAULT [7:0] = 0X00)
Bit No.
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Mnemonic
12 V/VC
OVT
FAN1
FAN2
FAN3
F4P
D1
D2
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
When Pin 21 is configured as a 12 V input, 12 V/VC = 1 masks SMBALERT for out-of-limit
conditions on the 12 V channel. When Pin 21 is programmed as VID5, this bit masks an
SMBALERT, if the VID5 VID code bit changes.
OVT = 1 masks SMBALERT for overtemperature THERM conditions.
FAN1 = 1 masks SMBALERT for a Fan 1 fault.
FAN2 = 1 masks SMBALERT for a Fan 2 fault.
FAN3 = 1 masks SMBALERT for a Fan 3 fault.
If Pin 14 is configured as TACH4, F4P = 1 masks SMBALERT for a Fan 4 fault. If Pin 14 is
configured as THERM, F4P = 1 masks SMBALERT for an exceeded THERM timer limit. If Pin 14
is configured as GPIO, F4P = 1 masks SMBALERT when GPIO is an input and GPIO is asserted.
D1 = 1 masks SMBALERT for a diode open or short on a Remote 1 channel.
D2 = 1 masks SMBALERT for a diode open or short on a Remote 2 channel.
Table 80. REGISTER 0X76 ? EXTENDED RESOLUTION REGISTER 1 (POWER-ON DEFAULT [7:0] = 0X00) (Note 1)
Bit No.
[1:0]
[3:2]
[5:4]
[7:6]
Mnemonic
2.5 V
V CCP
V CC
5.0 V
R/W
Read-only
Read-only
Read-only
Read-only
Description
2.5 V LSBs. Holds the 2 LSBs of the 10-bit 2.5 V measurement.
V CCP LSBs. Holds the 2 LSBs of the 10-bit V CCP measurement.
V CC LSBs. Holds the 2 LSBs of the 10-bit V CC measurement.
5.0 V LSBs. Holds the 2 LSBs of the 10-bit 5.0 V measurement.
1. If this register is read, this register and the registers holding the MSB of each reading are frozen until read.
Table 81. REGISTER 0X77 ? EXTENDED RESOLUTION REGISTER 2 (POWER-ON DEFAULT [7:0] = 0X00) (Note 1)
Bit No.
[1:0]
[3:2]
[5:4]
[7:6]
Mnemonic
12 V
TDM1
LTMP
TDM2
R/W
Read-only
Read-only
Read-only
Read-only
Description
12 V LSBs. Holds the 2 LSBs of the 10-bit 12 V measurement.
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.
1. If this register is read, this register and the registers holding the MSB of each reading are frozen until read.
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