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MAX34440 Datasheet(PDF) 32 Page - Maxim Integrated Products

Part # MAX34440
Description  PMBus 6-Channel Power-Supply Manager
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX34440 Datasheet(HTML) 32 Page - Maxim Integrated Products

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PMBus 6-Channel Power-Supply Manager
32
Table 16. STATUS_BYTE
STATUS_BYTE (78h)
The STATUS_BYTE command returns 1 byte of information with a summary of the most critical faults. A value of 1 indi-
cates that a fault or warning event has occurred and a 0 indicates otherwise. Bits for unsupported features are reported
as 0. The STATUS_BYTE cannot be restored by the RESTORE_DEFAULT_ALL command. The STATUS_BYTE message
content is described in Table 16. This command is read-only.
Table 17. STATUS_WORD
STATUS_WORD (79h)
The STATUS_WORD command returns 2 bytes of information with a summary of the reason for a fault. The low byte of
the STATUS_WORD is the same data as the STATUS_BYTE. Table 17 describes the STATUS_WORD message content.
BIT
BIT NAME
MEANING
7:6
0
These bits always return a 0.
5
VOUT_OV
An overvoltage fault has occurred.
4
IOUT_OC
An overcurrent fault has occurred.
3
0
This bit always returns a 0.
2
TEMPERATURE
A temperature fault or warning has occurred.
1
CML
A communication, memory, or logic fault has occurred.
0
NONE OF THE ABOVE A fault or warning not listed in bits [7:1] has occurred.
BIT
BIT NAME
MEANING
15
VOUT
An output voltage fault or warning or TON_MAX_FAULT has occurred.
14
IOUT
An overcurrent fault or warning has occurred.
13
0
This bit always returns a 0.
12
MFR
A bit in STATUS_MFR_SPECIFIC has been set.
11
POWER_GOOD#
A power-supply voltage has fallen from POWER_GOOD_ON to less than POWER_GOOD_OFF.
10:6
0
These bits always return a 0.
5
VOUT_OV
An overvoltage fault has occurred.
4
IOUT_OC
An overcurrent fault has occurred.
3
0
This bit always returns a 0.
2
TEMPERATURE
A temperature fault or warning has occurred.
1
CML
A communication, memory, or logic fault has occurred.
0
NONE OF THE ABOVE A fault or warning not listed in bits [7:1] has occurred.


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