LTC4449 datasheet(89/108 Pages) LINER

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LTC3882-1

Rev A

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STATUS_MFR_SPECIFIC

The STATUS_MFR_SPECIFIC command returns one byte with LTC3882-1-specific status information.

STATUS_MFR_SPECIFIC Message Contents:

BIT

MEANING

Internal temperature fault (>160°C).

Internal temperature warning (>130°C).

EEPROM CRC error.

Internal PLL unlocked.

Fault log present.

Not supported (LTC3882-1 returns 0).

Output short cycled.

FAULT low.

If any supported bits are set, the MFR bit in the STATUS_WORD will be set and ALERT may be asserted. Any supported bit may be cleared by writing a 1 to

that bit position in STATUS_MFR_SPECIFIC, in lieu of a CLEAR_FAULTS command.

This command has one data byte.

MFR_PADS_LTC3882-1

The MFR_PADS_LTC3882-1 command provides status of the LTC3882-1 digital I/O and control pins, in addition to

general output voltage conditions.

MFR_PADS_LTC3882-1 Message Contents:

BIT

MEANING

Channel 1 is a slave.

Channel 0 is a slave.

13:12

Not supported (LTC3882-1 returns 0).

ADC results for IOUT may be invalid.

SYNC output disabled externally.

Channel 1 POWER_GOOD (normally returns 1 if slave).

Channel 0 POWER_GOOD (normally returns 1 if slave).

LTC3882-1 forcing RUN1 low.

LTC3882-1 forcing RUN0 low.

RUN1 pin state.

RUN0 pin state.

LTC3882-1 forcing FAULT1 low.

LTC3882-1 forcing FAULT0 low.

FAULT1 pin state.

FAULT0 pin state.

This read-only command has two data bytes.

PMBus COMMAND DETAILS (Status Reporting)

LTC4449 Datasheet(PDF) 89 Page - Linear Technology

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