Datasheet

PMBus 5-Channel Power-Supply Manager
and Intelligent Fan Controller
MAX34441
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
CODE COMMAND NAME TYPE
PAGE
0–4
PAGE
5
PAGE
6–11
PAGE
255
NO. OF
BYTES
FLASH
STORED
(NOTE 2)
DEFAULT
VALUE
(NOTE 2)
(NOTE 1)
51h OT_WARN_LIMIT R/W Word — — R/W — 2 Y 7FFFh
5Eh POWER_GOOD_ON R/W Word R/W — — — 2 Y 0000h
5Fh POWER_GOOD_OFF R/W Word R/W — — — 2 Y 0000h
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 R 1 N 00h
79h STATUS_WORD Read Word R R R R 2 N 0000h
7Ah STATUS_VOUT Read Byte R — — — 1 N 00h
7Eh STATUS_CML Read Byte R R R R 1 N 00h
80h STATUS_MFR_SPECIFIC Read Byte R — R — 1 N 00h
81h STATUS_FANS_1_2 Read Byte — 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
90h READ_FAN_SPEED_1 Read Word — R — — 2 N 0000h
98h PMBUS_REVISION Read Byte R R R R 1 FIXED 11h
99h MFR_ID Read Byte R R R R 1 FIXED 4Dh
9Ah MFR_MODEL Read Byte R R R R 1 FIXED 52h
9Bh MFR_REVISION Read Word R R R R 2 FIXED 3031h
9Ch MFR_LOCATION Block R/W R/W R/W R/W R/W 8 Y (Note 3)
9Dh MFR_DATE Block R/W R/W R/W R/W R/W 8 Y (Note 3)
9Eh MFR_SERIAL Block R/W R/W R/W R/W R/W 8 Y (Note 3)
D1h MFR_MODE R/W Word R/W 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 R/W 2 Y 0000h
DCh MFR_NV_FAULT_LOG Block Read R R R R 255 Y (Note 4)
DDh MFR_TIME_COUNT Block Read R 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
F1h MFR_FAN_CONFIG R/W Word — R/W — — 2 Y 0000h
F2h MFR_FAN_LUT Block R/W — R/W — — 32 Y (Note 6)
F3h MFR_READ_FAN_PWM Read Word — R — — 2 N 0000h
F5h MFR_FAN_FAULT_LIMIT R/W Word — R/W — — 2 Y 0000h
F6h MFR_FAN_WARN_LIMIT R/W Word — R/W — — 2 Y 0000h