BOXLIGHT MP-45, Руководство по обслуживанию

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1 R Reset Input I
2 SCL IIC BUS SCL I
3 SDA IIC BUS SDA I/O
4 A05 FAN_CONT1 FN901,FN902 = Intake Fans O
5 A06 FAN_CONT2 FN905 = Exhaust Fan O
6 A07 Not used O
7 A08 Not used O
8 VrefL DAC Lower Reference Voltage input -
9 VrefU 1 DAC Upper Reference Voltage input (CH5~CH8) -
10 Vss GND -
11 VrefU 2 DAC Upper Reference Voltage input (CH1~CH 4) -
12 A01 FAN_CONT4 FN903 = Cooling Fan for PBS O
13 A02 FAN_CONT5 FN907 = Cooling Fan for Lamp Bottom O
14 A03 FAN_CONT6 FN906 = Cooling Fan for Lamp Front O
15 A04 FAN_CONT7 FN904 = Cooling Fan for Power Board O
16 Vcc Power Supply for Output Buffer (12V) -
17 Vdd Power 5V -
18 CS2 Slave address setting port 2 (Vdd) I
19 CS1 Slave address setting port 1 (Vdd) I
20 CS0 Slave address setting port 0 (Vdd) I
Pin No. Name Function I/O
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IIC Bus D/A Converter (IC7801, M62399FP) Port Functions
Control Port Functions
1 OE IO_ENB I
2 D0 D0 I
3 D1 D1 I
4 D2 D2 I
5 D3 D3 I
6 D4 D4 I
7 D5 D5 I
8 D6 D6 I
9 D7 D7 I
10 GND GND -
11 CK ADD1_CS Output Port Chip Select Enable = L I
12 Q7 1274EN2 IP input sync SW ( TA1370 = L , TB1274 = H ) O
13 Q6 1274EN1 IP input component signal SW ( CXA2151 = L , TB1274 = H ) O
14 Q5 AV_SEL1 TB274 input composite sync signal SW O
15 Q4 AV_SEL0 ( SEL0/SEL1 : H/H = IN1<Scart>, L/H = IN2, L/L = IN3 ) O
16 Q3 DVI_RESET DVI Receiver IC reset Reset = H O
17 Q2 Not used O
18 Q1 M_OUT MONITOR OUT On/Off On = L O
19 Q0 DDC_SW Select EEPROM for DDC ( PC = L , HDCP = H ) O
20 Vdd Power 5V -
Pin No. Name Function I/O
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Serial Controlled Output Expander (IC9883, TC74VHC574FT) Port Functions
1 R Serial Data output port (Not connected) O
2 SCL IIC BUS SCL I
3 SDA IIC BUS SDA I/O
4 A05 Not used O
5 A06 Not used O
6 A07 Not used O
7 A08 Not used O
8 VrefL DAC Lower Reference Voltage input -
9 VrefU 1 DAC Upper Reference Voltage input (CH5~CH8) -
10 Vss GND -
11 VrefU2 DAC Upper Reference Voltage input (CH1~CH 4) -
12 A01 AV_RCLP O
13 A02 AV_GCLP O
14 A03 AV_BCLP O
15 A04 VOLUME O
16 Vcc Power Supply for Output Buffer (4.5V ~ 5.5V) -
17 Vdd Power 5V -
18 CS2 Slave address setting port 2 (Vdd) I
19 CS1 Slave address setting port 1 (GND) I
20 CS0 Slave address setting port 0 (GND) I
Pin No. Name Function I/O
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IIC Bus D/A Converter (IC212, M62393FP) Port Functions