Datasheet

6-Channel Intelligent Fan Controller
MAX31785
3
TABLE OF CONTENTS (continued)
Fan Control Operation ......................................................................... 22
Dual Fan Applications
........................................................................22
Automatic Fan Control Operation
...............................................................22
Pulse Stretching
..........................................................................24
Fan Spin-Up
...............................................................................24
Fan Power-On Sequencing
....................................................................25
Fan Health-Meter Function
....................................................................25
PAGE (00h)
................................................................................27
CLEAR_FAULTS (03h)
.......................................................................28
WRITE_PROTECT (10h)
......................................................................28
STORE_DEFAULT_ALL (11h)
..................................................................28
RESTORE_DEFAULT_ALL (12h)
................................................................28
CAPABILITY (19h)
...........................................................................28
VOUT_MODE (20h)
..........................................................................29
VOUT_SCALE_MONITOR (2Ah)
................................................................29
FAN_CONFIG _1_2 (3Ah)
.....................................................................29
FAN_COMMAND_1 (3Bh)
.....................................................................30
VOUT_OV_FAULT_LIMIT (40h)
.................................................................30
VOUT_OV_WARN_LIMIT (42h)
.................................................................30
VOUT_UV_WARN_LIMIT (43h)
.................................................................31
VOUT_UV_FAULT_LIMIT (44h)
.................................................................31
OT_FAULT_LIMIT (4Fh)
.......................................................................31
OT_WARN_LIMIT (51h)
.......................................................................31
STATUS _BY TE (78h)
.........................................................................32
STATUS _WORD (79h)
........................................................................32
STATUS _VOUT (7Ah)
.........................................................................32
STATUS _CML (7Eh)
.........................................................................33
STATUS _ MFR _ SPECIFIC (80h)
................................................................33
STATUS _ FANS _1_ 2 (81h)
.....................................................................33
READ_VOUT (8Bh)
..........................................................................34
READ_TEMPERATURE_1 (8Dh)
................................................................34
READ_FAN_SPEED_1 (90h)
...................................................................34
PMBUS_REVISION (98h)
.....................................................................34
MFR_ID (99h)
..............................................................................34
MFR_MODEL (9Ah)
.........................................................................34
MFR_REVISION (9Bh)
.......................................................................34
MFR_LOCATION (9Ch)
.......................................................................34