Sharp LC-20D30U Service Manual page 51

1-2. Pin Functions
Pin No. Maker's pin name
1 P96/ANEX1/Sout4
2 P95/ANEX0/CLK4
3 P94/DA1/TB4in
4 P93/DA0/TB3in
5 P92/TB2in/Sout3
6 P91/TB1in/Sin3
7 P90/TB0in/CLK3
8 BYTE
9 CNVss
10 P87/Xcin
11 P86/Xcout
12 RESET
13 Xout
14 Vss
15 Xin
16 Vcc1
17 P85/NMI
18 P84/INT2
19 P83/INT1
20 P82/INT0
21 P81/TA4in
22 P80/TA4out
23 P77/TA3in
24 P76/TA3out
25 P75/TA2in
26 P74/TA2out
27 P73/CTS2_/RTS2_/TA1in
28 P72/CLK2/TA1out
29 P71/RxD2/SCL2/TA0in/TB5in
30 P70/TxD2/SDA2/TA0out
31 P67/TxD1/SDA1
32 P66/RxD1/SCL1
33 P65/CLK1
34 P64/CTS1/RTS1/CTS0/CLKS1
35 P63/TxD0/SDA0
36 P62/RxD0/SCL0
37 P61/CLK0
38 P60/CTS0/RTS0
39 P57/RDY/CLKout
40 P56/ALE
41 P55/HOLD
42 P54/HLDA
43 P53/BCLK
44 P52/RD
45 P51/WRH/BHE
46 P50/WRL/WR
47 P47/CS3
48 P46/CS2
49 P45/CS1
50 P44/CS0
I/O Pin name Function
I AD_INT Signal change interrupt detection
O OFL_DUTY Backlight dimmer duty ratio output
I PC-H PC signal HS frequency detection
O
I PC-V PC signal VS frequency detection
I CSYNC Composite sync signal
I IREM Remote control signal
I BYTE Connected to GND
I CNVss Connected to GND (connected to Vcc1 because of CNVSS at flash write)
I Xcin 32-kHz crystal oscillator (for clock count)
O Xcout 32-kHz crystal oscillator (for clock count)
I RESET Microprocessor reset when at "L"
O Xout System clock output
I Vss GND
I Xin System clock input
I Vcc1 VDD (+3.3V)
I NMI (Connected to Vcc1 because of NMI at flash write)
O
I PSWin Main power monitoring
I VSYNC VSYNC signal input
O
O AC_Ctrl AC adaptor power consumption control
O AD_RESET MST3000 series reset output (Reset at H, Normal at L)
I SSW S terminal connected, S terminal selected at "L"
I/O SCL1 Serial clock line 1 (other) in 2-line I2C bus status
I/O SDA1 Serial data line 1 in 2-line I2C bus status
I/O SDA2 Serial data line 2 in 2-line I2C bus status
I/O SCL2 Serial clock line 2 (EEPROM) in 2-line I2C bus status
O
O
I/O TxD Adjustment process UART device connected (TxD at flash write)
I/O RxD Adjustment process UART device connected (RxD at flash write)
O SCLK (Clock input at flash write)
O BUSY (BUSY signal output at flash write)
O MPWEL Data signal input (MPWEL) for 4-wire DVP serial line
I MPOE Data signal output (MPOE) for 4-wire DVP serial line
O MPWEH Clock (MPWEH) for 4-wire DVP serial line
O
O MAINSW LED power control
O
I POWin(EPM) DC/DC startup detection (connected to Vss because of EPM at flash write)
O
O S IN/OUT Audio input/output switching
I DVP15_IN DVP1.5V power detection
O RLED Red power LED control
I MRDY(CE) I2C bus open/closed switching detection (connected to Vcc2 because of CE at flash write)
O GLED Green power LED control
O
O DVP33_CTRL DVP3.3V power control
O WPCONT HDMI EDID write protect control
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LC-20D30U