PMBus 6-Channel Power-Supply Manager
MAX34440
15
Table 1. PMBus Command Codes (continued)
Note 1: Common commands are shaded. Access through any page results in the same device response.
Note 2: In the Flash Stored column, an “N” indicates that this parameter is not stored in flash memory when the STORE_
DEFAULT_ALL command is executed and the value shown in the Default Value column is automatically loaded upon
power-on reset or when the RST pin is asserted. A “Y” in the Flash Stored column indicates that the currently loaded value
in this parameter is stored in flash memory when the STORE_DEFAULT_ALL command is executed and is automatically
loaded upon power-on reset or when the RST pin is asserted and the value shown in the Default Value column is the
value when shipped from the factory. “FIXED” in the Flash Stored column means this value is fixed at the factory and
cannot be changed.
Note 3: The factory-set default value for this 8-byte block is 3130313031303130h.
Note 4: The factory-set default value for the complete block of the MFR_NV_FAULT_LOG is FFh.
Note 5: The power-on reset value for this 4-byte block is 00000000h.
CODE COMMAND NAME TYPE
PAGE
0–5
PAGE
6–13
PAGE
255
NO. OF
BYTES
FLASH
STORED
(NOTE 2)
DEFAULT
VALUE
(NOTE 2)
(NOTE 1)
60h TON_DELAY R/W Word R/W — — 2 Y 0000h
62h TON_MAX_FAULT_LIMIT R/W Word R/W — — 2 Y 0000h
64h TOFF_DELAY R/W Word R/W — — 2 Y 0000h
78h STATUS_BYTE Read Byte R R R 1 N 00h
79h STATUS_WORD Read Word R R R 2 N 0000h
7Ah STATUS_VOUT Read Byte R — — 1 N 00h
7Eh STATUS_CML Read Byte R R R 1 N 00h
80h STATUS_MFR_SPECIFIC Read Byte R R — 1 N 00h
8Bh READ_VOUT Read Word R — — 2 N 0000h
8Ch READ_IOUT Read Word R — — 2 N 0000h
8Dh READ_TEMPERATURE_1 Read Word — R — 2 N 0000h
98h PMBUS_REVISION Read Byte R R R 1 FIXED 11h
99h MFR_ID Read Byte R R R 1 FIXED 4Dh
9Ah MFR_MODEL Read Byte R R R 1 FIXED 51h
9Bh MFR_REVISION Read Word R R R 2 FIXED 3030h
9Ch MFR_LOCATION Block R/W R/W R/W R/W 8 Y (Note 3)
9Dh MFR_DATE Block R/W R/W R/W R/W 8 Y (Note 3)
9Eh MFR_SERIAL Block R/W R/W R/W R/W 8 Y (Note 3)
D1h MFR_MODE R/W Word R/W R/W R/W 2 Y 0000h
D4h MFR_VOUT_PEAK R/W Word R/W — — 2 N 0000h
D5h MFR_IOUT_PEAK R/W Word R/W — — 2 N 0000h
D6h MFR_TEMPERATURE_PEAK R/W Word — R/W — 2 N 8000h
D7h MFR_VOUT_MIN R/W Word R/W — — 2 N 7FFFh
D9h MFR_FAULT_RESPONSE R/W Word R/W — — 2 Y 0000h
DAh MFR_FAULT_RETRY R/W Word R/W R/W R/W 2 Y 0000h
DCh MFR_NV_FAULT_LOG Block Read R R R 255 Y (Note 4)
DDh MFR_TIME_COUNT Block Read R R R 4 N (Note 5)
E0h MFR_MARGIN_CONFIG R/W Word R/W — — 2 Y 0000h
F0h MFR_TEMP_SENSOR_CONFIG R/W Word — R/W — 2 Y 0000h
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