MAX16064 Datasheet, PDF (41/52 Pages) Maxim Integrated Products – ±0.3% Accurate, Quad, Power-Supply Controller with Active-Voltage Output Control and PMBus Interface

±0.3% Accurate, Quad, Power-Supply Controller with
Active-Voltage Output Control and PMBus Interface
STATUS_WORD (79h)
The STATUS_WORD command returns two 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. The STATUS_WORD message
content is described in Table 10.
STATUS_VOUT (7Ah)
The STATUS_VOUT command returns one byte of infor-
mation with contents as described in Table 11.
Table 10. STATUS_WORD Message Contents
BYTE
BIT
NUMBER
STATUS BIT NAME
MEANING
7
6
5
4
High
3
2
1
0
7
VOUT
IOUT/POUT
INPUT
MFR
POWER_GOOD#
FANS
OTHER
UNKNOWN
BUSY
An output-voltage fault or warning has occurred.
The IOUT/POUT bit is not supported. This bit always returns 0.
The INPUT bit is not supported. This bit always returns 0.
A manufacturer-specific fault or warning has occurred.
The POWER_GOOD# bit is not supported. This bit always returns 0.
The FANS bit is not supported. This bit always returns 0.
Reserved.
A fault type not given in bits [15:1] of the STATUS_WORD has been detected.
A fault was declared because the device was busy and unable to respond. The
BUSY bit is not supported. This bit always returns 0.
6
5
4
Low
3
2
1
0
OFF
VOUT_OV
IOUT_OC
VIN_UV
TEMPERATURE
CML
OTHER
This bit is asserted if ENOUT is presently disabling the power supply,
regardless of the reason, including simply not being enabled.
An output overvoltage fault has occurred.
An output overcurrent fault has occurred. The IOUT_OC bit is not supported.
This bit always returns 0.
An input undervoltage fault has occurred. The VIN_UV bit is not supported. This
bit always returns 0.
A temperature fault or warning has occurred.
A communication, memory, or logic fault has occurred.
A fault or warning not listed in bits [7:1] has occurred. See the
MFR_STATUS_WORD (D8h) section for more information.
Table 11. STATUS_VOUT Message Contents
BIT NUMBER
7
6
5
4
VOUT overvoltage fault
VOUT overvoltage warning
VOUT undervoltage fault
VOUT undervoltage warning
MEANING
3
VOUT_MAX warning
This bit is not supported. This bit always returns 0.
2
TON_MAX_FAULT
This bit is not supported. This bit always returns 0.
1
TOFF_MAX_WARNING
This bit is not supported. This bit always returns 0.
0
VOUT tracking error
This bit is not supported. This bit always returns 0.
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