PMBus 6-Channel Power-Supply Manager

MAX34440

3

Maxim Integrated

TABLE OF CONTENTS (continued)

Sending a DIRECT Format Value ............................................................... 20

Fault Management and Reporting .............................................................. 21

System Watchdog Timer ...................................................................... 21

Temperature Sensor Operation ................................................................. 22

PMBus Commands . .. ... ... .. ... .. ... .. ... ... .. ... .. ... ... ... .. ... .. ... ... .. ... .. ... ... .. ... . 23

PAGE (00h) ................................................................................ 23

OPERATION (01h) ........................................................................... 24

ON_OFF_CONFIG (02h) ...................................................................... 25

CLEAR_FAULTS (03h) ....................................................................... 25

WRITE_PROTECT (10h) ...................................................................... 25

STORE_DEFAULT_ALL (11h) .................................................................. 26

RESTORE_DEFAULT_ALL (12h) ................................................................ 26

CAPABILITY (19h) ........................................................................... 26

VOUT_MODE (20h) .......................................................................... 26

VOUT_MARGIN_HIGH (25h) .................................................................. 26

VOUT_MARGIN_LOW (26h) ................................................................... 27

VOUT_SCALE_MONITOR (2Ah) ................................................................ 27

IOUT_CAL_GAIN (38h) ....................................................................... 27

VOUT_OV_FAULT_LIMIT (40h) ................................................................. 28

VOUT_OV_WARN_LIMIT (42h) ................................................................. 28

VOUT_UV_WARN_LIMIT (43h) ................................................................. 28

VOUT_UV_FAULT_LIMIT (44h) ................................................................. 28

IOUT_OC_WARN_LIMIT (46h) .................................................................29

IOUT_OC_FAULT_LIMIT (4Ah) .................................................................29

OT_FAULT_LIMIT (4Fh) .......................................................................29

OT_WARN_LIMIT (51h) .......................................................................30

POWER_GOOD_ON (5Eh) ....................................................................30

POWER_GOOD_OFF (5Fh) ................................................................... 31

TON_DELAY (60h) .......................................................................... 31

TON_MAX_FAULT_LIMIT (62h) ................................................................ 31

TOFF_DELAY (64h) .......................................................................... 31

STATUS_BYTE (78h) ......................................................................... 32

STATUS_WORD (79h) ........................................................................ 32

STATUS_VOUT (7Ah).........................................................................33

STATUS_CML (7Eh) .........................................................................33

STATUS_MFR_SPECIFIC (80h) ................................................................33

READ_VOUT (8Bh) ..........................................................................34