Linear Technology Analog Devices LTC3882-1, Datasheet

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LTC3882-1
87
Rev A
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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 STA-
TUS_WORD is the same as the STATUS_BYTE command.
STATUS_WORD High Byte Message Contents:
BIT STATUS BIT NAME MEANING
15 VOUT An output voltage fault or warning has occurred.
14 IOUT An output current fault or warning has occurred.
13 INPUT An input voltage fault or warning has occurred.
12 MFR_SPECIFIC A fault or warning specific to the LTC3882-1 has occurred.
11 POWER_GOOD# The POWER_GOOD state is false if this bit is set.
10 FANS Not supported (LTC3882-1 returns 0).
9 OTHER Not supported (LTC3882-1 returns 0).
8 UNKNOWN Not supported (LTC3882-1 returns 0).
This command has two data bytes.
STATUS_VOUT
The STATUS_VOUT command returns one byte of V
OUT
status information.
STATUS_VOUT Message Contents:
BIT MEANING
7 V
OUT
overvoltage fault.
6 V
OUT
overvoltage warning.
5 V
OUT
undervoltage warning.
4 V
OUT
undervoltage fault.
3 VOUT_MAX warning.
2 TON_MAX fault.
1 TOFF_MAX warning.
0 Not supported by the LTC3882-1 (returns 0).
ALERT can be asserted if any of bits[7:1] 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.
STATUS_IOUT
The STATUS_IOUT command returns one byte of I
OUT
status information.
STATUS_IOUT Message Contents:
BIT MEANING
7 I
OUT
overcurrent fault.
6 Not supported (LTC3882-1 returns 0).
5 I
OUT
overcurrent warning.
4:0 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_IOUT, in lieu of a
CLEAR_FAULTS command.
This command has one data byte.
PMBus COMMAND DETAILS
(Status Reporting)