LTM4677 datasheet(91/110 Pages) AD

91 / 110 page

LTC3888-1

Rev. 0

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STATUS_WORD

The STATUS_WORD command returns a two-byte summary of the channel's fault condition. The low byte of the

STATUS_WORD is the same as the STATUS_BYTE command.

STATUS_WORD High Byte Message Contents:

BIT

STATUS BIT NAME

MEANING

VOUT

An output voltage fault or warning has occurred. Also set if a power stage fault or open VSENSE+ is detected.

IOUT

An output current fault or warning has occurred. Also set if a power stage fault is detected.

INPUT

An input voltage fault or warning has occurred.

MFR_SPECIFIC

A fault or warning specific to the LTC3888-1 has occurred.

POWER_GOOD#

The POWER_GOOD state is false if this bit is set.

FANS

Not supported (LTC3888-1 returns 0).

OTHER

Not supported (LTC3888-1 returns 0).

UNKNOWN

Not supported (LTC3888-1 returns 0).

This command has two data bytes.

STATUS_VOUT

The STATUS_VOUT command returns one byte of VOUT status information. Refer to Table 8 for additional details.

STATUS_VOUT Message Contents:

BIT

MEANING

VOUT overvoltage fault, power stage fault, or open VSENSE+ input.

VOUT overvoltage warning.

VOUT undervoltage warning.

VOUT undervoltage fault or open VSENSE+ input.

VOUT_MAX warning.

TON_MAX fault.

Not supported by the LTC3888-1 (returns 0).

ALERT can be asserted if any of bits[7:2] are set. These may be cleared by writing a 1 to their bit position in STATUS_VOUT, in lieu of a CLEAR_FAULTS

command.

This command has one data byte.

PMBus COMMAND DETAILS (Status Reporting)

LTM4677 Datasheet(PDF) 91 Page - Analog Devices

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