F81866A Datasheet, PDF (45/210 Pages) Feature Integration Technology Inc. – 6 UARTs Super IO With 128 Bytes FIFO and Power

F81866A
FAN_FAULT#
Fan_Fault# will be asserted when the fan speed doesn’t meet the expected fan speed within a
programmable period (default is 11 seconds) or when fan stops with respect to PWM duty-cycle
which should be able to turn on the fan. There are two conditions may cause the FAN_FAULT# event.
(1). When PWM_Duty reaches 0xFF, the fan speed count can’t reach the fan expected count on
time. (Figure 6-16)
Current Fan Count
11 sec(default)
Expected Fan Count
100%
Duty-cycle
Fan_Fault#
Fig 6-16
(2). After the period of detecting fan full speed, when PWM_Duty > Min. Duty, and fan count is still in
0xFFF.
6.4.2 Hardware Monitor Device Registers
Before the device registers, the following is a register map order which shows a summary of all
registers. Please refer to each register if you want more detail information.
Register index01 ~ CR03 Æ Configuration Registers
Register index08 ~ CREF Æ PECI/TSI/I2C Control Register
Register CR40 ~ CR8E Æ PECI 3.0 Command and temperature Setting Register
Register CR10 ~ CR3A Æ Voltage Setting Register
Register CR90 ~ CRCF Æ Fan Control Setting Register
ÆFan1 Detail Setting CRA0 ~ CRAF
ÆFan2 Detail Setting CRB0 ~ CRBF
ÆFan3 Detail Setting CRC0 ~ CRCF
6.4.2.1Configuration Setting
FAN, Voltage Start up Register ⎯ Index 01h
Bit
Name
R/W Reset Default
Description
7-3
Reserved
0h
-
0 ^Reserved
2 POWER_DOWN R/W 5VSB 0 ^{Hardware monitor function power down function.}
1
FAN_START
R/W 5VSB
1
1: enable startup of fan monitoring operations.
0: Put the part in the standby mode.
0
V_T_START
R/W 5VSB
1
1: enable startup of temperature and voltage monitoring operations
0: Put the part in the standby mode.
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Jan, 2012
V0. 12P