Rainbow Electronics MAX16064 - Manual (Page 41)

MAX16064
±0.3% Accurate, Quad, Power-Supply Controller with
Active-Voltage Output Control and PMBus Interface
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Table 10. STATUS_WORD Message Contents
BYTE
BIT
NUMBER
STATUS BIT NAME MEANING
7 VOUT An output-voltage fault or warning has occurred.
6 IOUT/POUT The IOUT/POUT bit is not supported. This bit always returns 0.
5 INPUT The INPUT bit is not supported. This bit always returns 0.
4 MFR A manufacturer-specific fault or warning has occurred.
3 POWER_GOOD# The POWER_GOOD# bit is not supported. This bit always returns 0.
2 FANS The FANS bit is not supported. This bit always returns 0.
1 OTHER Reserved.
High
0 UNKNOWN A fault type not given in bits [15:1] of the STATUS_WORD has been detected.
7 BUSY
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 OFF
This bit is asserted if ENOUT is presently disabling the power supply,
regardless of the reason, including simply not being enabled.
5 VOUT_OV An output overvoltage fault has occurred.
4 IOUT_OC
An output overcurrent fault has occurred. The IOUT_OC bit is not supported.
This bit always returns 0.
3 VIN_UV
An input undervoltage fault has occurred. The VIN_UV bit is not supported. This
bit always returns 0.
2 TEMPERATURE A temperature fault or warning has occurred.
1 CML A communication, memory, or logic fault has occurred.
Low
0 OTHER
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 MEANING
7 VOUT overvoltage fault
6 VOUT overvoltage warning
5 VOUT undervoltage fault
4 VOUT undervoltage warning
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.
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.