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LTC4449 Datasheet(PDF) 87 Page - Linear Technology

Part # LTC4449
Description  Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management
PDF  108 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4449 Datasheet(HTML) 87 Page - Linear Technology

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LTC3882-1
87
Rev A
For more information www.analog.com
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 VOUT status information.
STATUS_VOUT Message Contents:
BIT
MEANING
7
VOUT overvoltage fault.
6
VOUT overvoltage warning.
5
VOUT undervoltage warning.
4
VOUT 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 IOUT status information.
STATUS_IOUT Message Contents:
BIT
MEANING
7
IOUT overcurrent fault.
6
Not supported (LTC3882-1 returns 0).
5
IOUT 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)



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