LTC2977 datasheet(88/108 Pages) LINER

88 / 108 page

LTC3882-1

Rev A

For more information www.analog.com

STATUS_INPUT

The STATUS_INPUT command returns one byte of VIN (VINSNS) status information.

STATUS_INPUT Message Contents:

BIT

MEANING

VIN overvoltage fault.

Not supported (LTC3882-1 returns 0).

VIN undervoltage warning.

Not supported (LTC3882-1 returns 0).

Unit off for insufficient VIN.

2:0

Not supported (LTC3882-1 returns 0).

ALERT can be asserted if bit 7 is set. Bit 7 may be cleared by writing it to a 1, in lieu of a CLEAR_FAULTS command.

This command has one data byte.

STATUS_TEMPERATURE

The STATUS_TEMPERATURE command returns one byte of sensed external temperature status information.

STATUS_TEMPERATURE Message Contents:

BIT

MEANING

External overtemperature fault.

External overtemperature warning.

Not supported (LTC3882-1 returns 0).

External undertemperature fault.

3:0

Not supported (LTC3882-1 returns 0).

ALERT can be asserted if any supported bits are set. Any supported bit may be cleared by writing a 1 to that bit position in STATUS_TEMPERATURE, in lieu

of a CLEAR_FAULTS command.

This command has one data byte.

STATUS_CML

The STATUS_CML command returns one byte of status information on received commands, internal memory and logic.

STATUS_CML Message Contents:

BIT

MEANING

Invalid or unsupported command received.

Invalid or unsupported data received.

Packet error check failed.

Memory fault detected.

Processor fault detected.

Reserved (LTC3882-1 returns 0).

Other communication fault.

Other memory or logic fault.

ALERT can be asserted if any supported bits are set. Any supported bit may be cleared by writing a 1 to that bit position in STATUS_CML, in lieu of a

CLEAR_FAULTS command.

This command has one data byte.

PMBus COMMAND DETAILS (Status Reporting)

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