Datasheet

MAX34451 PMBus 16-Channel V/I Monitor and
12-Channel Sequencer/Marginer
www.maximintegrated.com
Maxim Integrated │ 14
Table 3. PMBus Command Codes
CODE COMMAND NAME TYPE
PAGE
NO. OF
BYTES
FLASH
STORED/
LOCKED
(NOTE 2)
DEFAULT
VALUE
(NOTE 2)
0–11 12–15 16–20 255
(NOTE 1)
00h PAGE R/Wbyte R/W R/W R/W R/W 1 N/N 00h
01h OPERATION
R/Wbyte R/W W 1 N/N 00h
02h ON_OFF_CONFIG
R/Wbyte R/W R/W R/W R/W 1 Y/Y 1Ah
03h
CLEAR_FAULTS Sendbyte W W W W 0 N/N —
10h WRITE_PROTECT
R/Wbyte R/W R/W R/W R/W 1 N/Y 00h
11h
STORE_DEFAULT_ALL Sendbyte W W W W 0 N/Y —
12h
RESTORE_DEFAULT_ALL Sendbyte W W W W 0 N/Y —
19h CAPABILITY
Readbyte R R R R 1 N/N 20h/30h
20h VOUT_MODE
Readbyte R R R R 1 FIXED/N 40h
25h VOUT_MARGIN_HIGH
R/Wword R/W — — — 2 Y/Y 0000h
26h VOUT_MARGIN_LOW
R/Wword R/W — — — 2 Y/Y 0000h
2Ah VOUT_SCALE_MONITOR
R/Wword R/W R/W — — 2 Y/Y 7FFFh
38h IOUT_CAL_GAIN
R/Wword R/W R/W — — 2 Y/Y 0000h
40h VOUT_OV_FAULT_LIMIT
R/Wword R/W R/W — — 2 Y/Y 7FFFh
42h VOUT_OV_WARN_LIMIT
R/Wword R/W R/W — — 2 Y/Y 7FFFh
43h VOUT_UV_WARN_LIMIT
R/Wword R/W R/W — — 2 Y/Y 0000h
44h VOUT_UV_FAULT_LIMIT
R/Wword R/W R/W — — 2 Y/Y 0000h
46h IOUT_OC_WARN_LIMIT
R/Wword R/W R/W — — 2 Y/Y 7FFFh
4Ah IOUT_OC_FAULT_LIMIT
R/Wword R/W R/W — — 2 Y/Y 7FFFh
4Fh OT_FAULT_LIMIT
R/Wword — — R/W — 2 Y/Y 7FFFh
51h OT_WARN_LIMIT
R/Wword — — R/W — 2 Y/Y 7FFFh
5Eh POWER_GOOD_ON
R/Wword R/W R/W — — 2 Y/Y 0000h
5Fh POWER_GOOD_OFF
R/Wword R/W R/W — — 2 Y/Y 0000h
60h TON_DELAY
R/Wword R/W — — — 2 Y/Y 0000h
62h TON_MAX_FAULT_LIMIT
R/Wword R/W — — — 2 Y/Y FFFFh
64h TOFF_DELAY
R/Wword R/W — — — 2 Y/Y 0000h
79h STATUS_WORD
Readword R R R R 2 N/N 0000h
7Ah STATUS_VOUT
Readbyte R R — — 1 N/N 00h
7Bh STATUS_IOUT
Readbyte R R — — 1 N/N 00h