Datasheet

ADM1275 Data Sheet
Rev. D | Page 40 of 48
STATUS_INPUT
Code: 0x7C, read byte. Value after reset: 0x00.
Table 24. Bit Descriptions for STATUS_INPUT Command
Bits Bit Name Behavior Settings Description
7 VIN_OV_FAULT Latched 0 No overvoltage detected on the OV pin.
1 An overvoltage was detected on the OV pin.
6 VIN_OV_WARN Latched 0
No overvoltage condition on the input supply detected by the power
monitor.
1
An overvoltage condition on the input supply was detected by the power
monitor.
5 VIN_UV_WARN Latched 0
No undervoltage condition on the input supply detected by the power
monitor.
1
An undervoltage condition on the input supply was detected by the
power monitor.
4 VIN_UV_FAULT Latched 0 No undervoltage detected on the UV pin.
1 An undervoltage was detected on the UV pin.
[3:0] Reserved 0000 Always reads as 0000.
STATUS_MFR_SPECIFIC
Code: 0x80, read byte. Value after reset: 0x00.
Table 25. Bit Descriptions for STATUS_MFR_SPECIFIC Command
Bits Bit Name Behavior Settings Description
7 FET_HEALTH_BAD Latched 0 FET behavior appears to be as expected.
1 FET behavior suggests that the FET may be shorted.
6 UV_CMP_OUT Live 0 Input voltage to UV pin is above threshold.
1 Input voltage to UV pin is below threshold.
5
OV_CMP_OUT
Live
0
Input voltage to OV pin is below threshold.
1 Input voltage to OV pin is above threshold.
4 Reserved 0 Always reads as 0.
3 HS_INLIM Latched 0 The ADM1275 has not actively limited the current into the load.
1
The ADM1275 has actively limited current into the load. This bit differs from
the IOUT_OC_FAULT bit in that the HS_INLIM bit is set immediately, whereas
the IOUT_OC_FAULT bit is not set unless the time limit set by the capacitor
on the TIMER pin elapses.
[2:1] HS_SHUTDOWN_CAUSE Latched 00
The ADM1275 is either enabled and working correctly, or has been shut
down using the OPERATION command.
01 An IOUT_OC_FAULT condition occurred that caused the ADM1275 to shut down.
10
A VIN_UV_FAULT condition occurred that caused the ADM1275 to shut down.
11 A VIN_OV_FAULT condition occurred that caused the ADM1275 to shut down.
0 IOUT_WARN2 Latched 0
No overcurrent condition on the output supply detected by the power
monitor using the IOUT_WARN2_LIMIT command.
1
An undercurrent or overcurrent condition on the output supply was
detected by the power monitor using the IOUT_WARN2_LIMIT command.
The polarity of the threshold condition is set by the IOUT_WARN2_SELECT bit
using the DEVICE_CONFIG command.
READ_VIN
Code: 0x88, read word. Value after reset: 0x0000.
Table 26. Bit Descriptions for READ_VIN Command
Bits Bit Name Settings Description
[15:12] Reserved 0000 Always reads as 0000.
[11:0] VIN Input voltage from the SENSE+ pin measurement, expressed in ADC codes.