F71862
cause the FAN_FAULT# event.
(1). When PWM_Duty reaches 0xFF, the fan speed count can’t reach the fan expected
count in time. (Figure 7-11)
11 sec(default)
Current Fan Count
Expected Fan Count
100%
Duty-cycle
Fan_Fault#
Fig 7-11
(2). After the period of detecting fan full speed, when PWM_Duty > Min. Duty, and fan
count still in 0xFFF.
Before the device registers, the following is a register map order which shows a summary of
all registers. Please refer each one register if you want more detail information.
Register CR01 ~ CR03 Æ Configuration Registers
Register CR10 ~ CR4F Æ Voltage Setting Register
Register CR60 ~ CR8E Æ Temperature Setting Register
Register CR90 ~ CRDF Æ Fan Control Setting Register
ÆFan1 Detail Setting CRA0 ~ CRAF
ÆFan2 Detail Setting CRB0 ~ CRBF
ÆFan3 Detail Setting CRC0 ~ CRCF
Configuration Registers
Configuration Register Index 01h
Bit
7-3
2
Name
Reserved
R/W Default
Description
Reserved
0h
0
0
1
Hardware monitor function power down.
POWER_DOWN
R/W
Set one to enable startup of fan monitoring operations; a zero puts the part
in standby mode.
Set one to enable startup of temperature and voltage monitoring
operations; a zero puts the part in standby mode.
1
0
FAN_START
V_T_START
R/W
R/W
1
Configuration Register Index 02h
Bit
Name
R/W Default
Description
Dummy register.
7
Reserved
R/W
R/W
0
0
0: Disable case open event output via BEEP.
1: Enable case open event output via BEEP.
6
CASE_BEEP_EN
49
July, 2008
V.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
