ADT7468 Datasheet, PDF (75/80 Pages) Analog Devices – dBCool™ Remote Thermal Controller and Voltage Monitor

ADT7468
Table 46. Register 0x74—Interrupt Mask Register 1 (Power-On Default <7:0> = 0x00)
Bit Name R/W
Description
0
2.5V
Read/write
2.5 V = 1, masks SMBALERT for out-of-limit conditions on the 2.5 V channel.
1
VCCP
Read/write
VCCP = 1, masks SMBALERT for out-of-limit conditions on the VCCP channel.
2
VCC
Read/write
VCC = 1, masks SMBALERT for out-of-limit conditions on the VCC channel.
3
5V
Read/write
5 V = 1, masks SMBALERT for out-of-limit conditions on the 5 V channel.
4
RIT
Read/write
RIT = 1, masks SMBALERT for out-of-limit conditions on the Remote 1 temperature channel.
5
LT
Read/write
LT = 1, masks SMBALERT for out-of-limit conditions on the local temperature channel.
6
R2T
Read/write
R2T = 1, masks SMBALERT for out-of-limit conditions on the Remote 2 temperature channel.
7
OOL
Read/write
OOL = 1, masks SMBALERT for any out-of-limit condition in Status Register 2.
Table 47. Register 0x75—Interrupt Mask Register 2 (Power-On Default <7:0> = 0x00)
Bit Name R/W
Description
0
12V/VC Read/write
When Pin 21 is configured as a 12 V input, 12V/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.
1
OVT
Read only
OVT = 1, masks SMBALERT for overtemperature THERM conditions.
2
FAN1
Read/write
FAN1 = 1, masks SMBALERT for a Fan 1 fault.
3
FAN2
Read/write
FAN2 = 1, masks SMBALERT for a Fan 2 fault.
4
FAN3
Read/write
FAN3 = 1, masks SMBALERT for a Fan 3 fault.
5
F4P
Read/write
If Pin 14 is configured as TACH 4, 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.
6
D1
Read/write
D1 = 1 masks SMBALERT for a diode open or short on a Remote 1 channel.
7
D2
Read/write
D2 = 1 masks SMBALERT for a diode open or short on a Remote 2 channel.
Table 48. Register 0x76—Extended Resolution Register 1¹
Bit Name R/W
Description
<1:0> 2.5V
Read-only
2.5 V LSBs. Holds the 2 LSBs of the 10-bit 2.5 V measurement.
<3:2> VCCP
Read-only
VCCP LSBs. Holds the 2 LSBs of the 10-bit VCCP measurement.
<5:4> VCC
Read-only
VCC LSBs. Holds the 2 LSBs of the 10-bit VCC measurement.
<7:6> 5 V
Read-only
5 V LSBs. Holds the 2 LSBs of the 10-bit 5 V measurement.
1 _{If this register is read, this register and the registers holding the MSB of each reading are frozen until read.}
Table 49. Register 0x77—Extended Resolution Register 2¹
Bit
Name R/W
Description
<1:0> 12V
Read-only
12 V LSBs. Holds the 2 LSBs of the 10-bit 12 V measurement.
<3:2> TDM1 Read-only
Remote 1 temperature LSBs. Holds the 2 LSBs of the 10-bit Remote 1 temperature measurement.
<5:4> LTMP Read-only
Local temperature LSBs. Holds the 2 LSBs of the 10-bit local temperature measurement.
<7:6> TDM2 Read-only
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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