Datasheet

Data Sheet ADM1276
Rev. C | Page 39 of 48
STATUS_INPUT
Code: 0x7C, read byte. Value after reset: 0x00.
Table 23. 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.
[3:1] Reserved 000 Always reads as 000.
[0]
PIN_OP_WARN
Latched
0
No overpower condition on the input supply detected by the power
monitor.
1
An overpower condition on the input supply was detected by the power
monitor.
STATUS_MFR_SPECIFIC
Code: 0x80, read byte. Value after reset: 0x00.
Table 24. 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 ADM1276 has not actively limited the current into the load.
1
The ADM1276 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 ADM1276 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 ADM1276 to shut
down.
10 A VIN_UV_FAULT condition occurred that caused the ADM1276 to shut down.
11 A VIN_OV_FAULT condition occurred that caused the ADM1276 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.