Datasheet

6-Channel Intelligent Fan Controller
MAX31785
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 automati-
cally 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 factory-set default value for the complete block is 00h.
CODE COMMAND NAME TYPE
PAGE
0–5
PAGE
6–16
PAGE
17–22
PAGE
255
NO. OF
BYTES
FLASH
STORED
(NOTE 2)
DEFAULT
VALUE
(NOTE 2)
(NOTE 1)
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
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 Byte R/W R/W R/W — 1 Y 00h
DCh MFR_NV_FAULT_LOG Block Read R R R R 255 Y (Note 4)
DDh MFR_TIME_COUNT Block R/W R/W R/W R/W R/W 4 N (Note 5)
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 5)
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
F7h MFR_FAN_RUN_TIME R/W Word R/W — — — 2 Y 0000h
F8h MFR_FAN_PWM_AVG R/W Word R/W — — — 2 Y 0000h
F9h MFR_FAN_PWM2RPM Block R/W R/W — — — 8 Y (Note 5)