LTC4449 datasheet(90/108 Pages) LINER

90 / 108 page

LTC3882-1

Rev A

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MFR_COMMON

The MFR_COMMON command contains status bits that are common to multiple LTC PMBus products.

MFR_COMMON Message Contents:

BIT

MEANING

LTC3882-1 not forcing ALERT low.

LTC3882-1 not BUSY.

LTC3882-1 calculations not pending.

LTC3882-1 output not in transition.

LTC3882-1 EEPROM initialized.

Not supported (LTC3882-1 returns 0).

SHARE_CLK timeout.

Not supported (LTC3882-1 returns 0).

This read-only command has one data byte.

MFR_INFO

The MFR_INFO command contains additional status bits that are LTC3882-1-specific and may be common to multiple

LTC PSM products.

MFR_INFO Data Contents:

BIT

MEANING

15:6

Reserved.

EEPROM ECC status.

0: Corrections have been made in the EEPROM user space.

1: No corrections have been made in the EEPROM user space.

4:0

Reserved

EEPROM ECC status is updated after each RESTORE_USER_ALL or RESET command, a power-on reset or an EEPROM

bulk read operation. This read-only command has two data bytes.

CLEAR_FAULTS

The CLEAR_FAULTS command clears any fault bits that have been set and deasserts (releases) the ALERT pin. This

command clears all bits in all status commands simultaneously.

CLEAR_FAULTS does not cause a channel that has latched off for a fault condition to restart. Channels that are latched

off for a fault condition are restarted when the output is commanded to turn off and then on through the OPERATION

command or RUN pins, or IC supply power is cycled.

If a fault is still present when CLEAR_FAULTS is commanded, that fault bit will immediately be set and ALERT again

asserted low.

This write-only command has no data bytes.

PMBus COMMAND DETAILS (Status Reporting)

LTC4449 Datasheet(PDF) 90 Page - Linear Technology

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