-49-
IIC bus D/A converter (Fan control, IC7881)
PIN NO. FUNCTION NAME
FUNCTION
POL.
ACTION
Stand-by
Power On
1
Reset Input
I
->
2
IIC BUS SCL
I
->
3
IIC BUS SDA
I/O
->
4
FAN_CONT5
FN905 Control Voltage (Power Box Exhaust Fan)
AO
->
0:FAN Max ~ 255:FAN Min
5
FAN_CONT6
FN906 Control Voltage (Color Wheel Intake Fan)
AO
->
0:FAN Max ~ 255:FAN Min
6
->
7
FAN_FN902 Control Voltage (PBS Cooling)
AO
->
0:FAN Max ~ 255:FAN Min
8
GND
-
->
9
DAC Upper Ref. Voltage(CH5~CH8)
-
->
10
GND
-
->
11
DAC Upper Ref. Voltage (CH1~CH4)
-
->
12
FAN_CONT1
FN901 Control Voltage (Intake Fan)
AO
->
0:FAN Max ~ 255:FAN Min
13
FAN_CONT2
FN902 Control Voltage (Lamp Intake Fan Top)
AO
->
0:FAN Max ~ 255:FAN Min
14
FAN_CONT3
FN903 Control Voltage (Lamp Intake Fan Bottom
AO
->
0:FAN Max ~ 255:FAN Min
15
FAN_CONT4
FN904 Control Voltage (Lamp Exhaust Fan)
AO
->
0:FAN Max ~ 255:FAN Min
16
Power for Output Buffer (4.5V ~ 5.5V)
-
->
17
Power 5V±10%
-
->
18
Slave Address Setting Pin2 (Vdd)
I
->
H
19
Slave Address Setting Pin1 (Vdd)
I
->
H
20
Slave Address Setting Pin0 (Vdd)
I
->
H
Control Port Functions
Содержание PT-CW230E
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Страница 76: ......