F81866A Datasheet, PDF (22/210 Pages) Feature Integration Technology Inc. – 6 UARTs Super IO With 128 Bytes FIFO and Power

F81866A
ALERT#
OD_12,5v
Alert a signal when temperature over limit setting.
76
GPIO20
I/OOD_{24st,5v I_VSB3V} ^{General purpose IO.}
SCL
I_lv/OD_{24st, 5v}
I2C Interface CLOCK pin. Clock output for AMD TSI
& Intel PCH (IBX Peak).
85
COPEN#
IN_st,5v
VBAT
Case Open Detection #. This pin is connected to a
specially designed low power CMOS flip-flop backed
by the battery for case open state preservation during
power loss.
89
D-
AIN
3VSB ^{Analog GND for thermal diode/transistor}
temperature.
90
D2+
AIN
3VSB ^{Thermal diode/transistor temperature sensor input.}
91
D1+(CPU)
AIN
3VSB ^{CPU thermal diode/transistor temperature sensor}
input. This pin is for CPU use.
92
VREF
AOUT
3VSB ^{Voltage reference output.}
93
VIN4
AIN
3VSB Voltage Input 4.
94
VIN3
95
VIN2
AIN
3VSB ^{Voltage Input 3. Support OVP & UVP function, and}
default is disable alarm mode.
AIN
3VSB ^{Voltage Input 2. Support OVP & UVP function, and}
default is disable alarm mode.
96
VIN1 (Vcore)
AIN
3VSB ^{Voltage Input for Vcore.}
98
FANIN1
IN_st,5v
3VCC Fan 1 tachometer input.
FANCTL1
OOD_12,5v
AOUT
Fan 1 control output. This pin provides PWM
duty-cycle output or a DAC voltage output (internal
pull down 100k Ω , default).
99
3VCC ^{Power on Strapping pin:}
PWM _DAC1
IN_st,5v
1: PWM mode.
0: Default is DAC mode for FANCTL1 (internal pull
down 100k Ω ).
100
FANIN2
IN_st,5v
3VCC Fan 2 tachometer input.
FANCTL2
OOD _12,5v
AOUT
Fan 2 control output. This pin provides PWM
duty-cycle output or a DAC voltage output (internal
pull down 100k Ω , default).
101
3VCC ^{Power on Strapping pin:}
PWM _DAC2
IN_st,5v
1: PWM mode.
0: Default is DAC mode for FANCTL2 (internal pull
down 100k Ω ).
5.7 KBC & I2C Function
Pin
Pin Name
Type
PWR
Description
34
KBRST#
OD_16,u10
3VCC
Keyboard reset. This pin is high after system reset.
Internal pull high 3.3V with 10k Ω .
35
GA20
OD_16,u10
3VCC
Gate A20 output. This pin is high after system
reset. Internal pull high 3.3V with 10k Ω .
63
KDATA
I/OD_16st,5V I_VSB3V ^{PS/2 Keyboard Data.}
64
KCLK
I/OD_16st,5V I_VSB3V ^{PS/2 Keyboard Clock.}
22
Jan, 2012
V0. 12P