LTC3882_15 Datasheet, PDF (86/104 Pages) Linear Technology – Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management

LTC3882
PMBus COMMAND DETAILS (Status Reporting)
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
7
Invalid or unsupported command received.
6
Invalid or unsupported data received.
5
Packet error check failed.
4
Memory fault detected.
3
Processor fault detected.
2
Reserved (LTC3882 returns 0).
1
Other communication fault.
0
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.
STATUS_MFR_SPECIFIC
The STATUS_MFR_SPECIFIC command returns one byte with LTC3882 specific status information.
STATUS_MFR_SPECIFIC Message Contents:
BIT MEANING
7
Internal temperature fault (>160°C).
6
Internal temperature warning (>130°C).
5
EEPROM CRC error.
4
Internal PLL unlocked.
3
Fault log present.
2
Not supported (LTC3882 returns 0).
1
Output short cycled.
0
GPIO 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.
3882f
86
For more information www.linear.com/LTC3882