Major Ic Informations - Sharp LC-20S4U-S Service Manual And Parts Listparts List

LC-20S4U-S
1-1. Description of Pins of IC2001 (RH-iXA627WJN5Q)
Pin No. Pin Name
1 P96
2 P95
3 P94
4 P93
5 P92
6 TB1in
7 TB0in
8 BYTE
9 CNVss
10 Xcin
11 Xout
12 RESET
13 Xcout
14 Vss
15 Xin
16 VccI
17 NMI
18 P84
19 INT1
20 INT0
21 P81
22 P82
23 P77
24 P76
25 P75
26 P74
27 P73
28 P72
29 P71
30 SDA1
31 P67
32 P66
33 P65
34 P64
35 TxD0
36 RxD0
37 CLK0
38 P60
39 P57
40 P56
41 P55
42 P54
43 P53
44 P52
45 P51
46 P50
47 P47
48 P46
49 P45
50 P44

MAJOR IC INFORMATIONS

I/O Pin Name Function
O N.C
O N.C
O N.C
O N.C
O N.C
I CSYNC Composite sync signal
I IREM1 Remote control signal
I BYTE Connected to GND
I CNVss Connected to GND (connected to Vcc1 for CNVSS at flash write)
I Xcin 32-kHz quartz oscillator (for clock count)
O Xout 32-kHz quartz oscillator (for clock count)
I RESET Microprocessor reset at "L"
O Xcout System clock output
I Vss GND
I Xin System clock input
I VccI VDD (+3.3V)
I NMI (Connected to Vcc1 for NMI at flash write)
O N.C
I PSWin Main power monitor
I VSYNC VSYNC signal input
O N.C
O AC_Ctrl AC adaptor power consumption control
O DACICS Gradation control IC chip select
I SSW Connected to S terminal at "L"
O N.C
O N.C
I/O SDA2 Serial data line 2 for I2C bus 2 system
I/O SCL2 Serial clock line 2 for I2C bus 2 system (EEPROM)
I/O SCL1 Serial clock line 1 for I2C bus 2 system (others)
I/O SCA1 Serial data line 1 for I2C bus 2 system
O TxD (TxD at flash write)
O RxD (RxD at flash write)
O SCLK (Clock input at flash write)
O BUSY (Busy output at flash write)
O MPWEL Data signal input for DVP 4-line serial (MPWEL)
I MPOE Data output signal for DVP 4-line serial (MPOE)
O MPWEH Clock for DVP 4-line serial (MPWEH)
O N.C
O MAIN SW LED power control
O N.C
I POWin(EPM) DC/DC start detect (connected to Vss for EPM at flash write)
I(O) L_ERR Fluorescent lamp error detect
O S IN/OUT Audio input/output select
O COMP AV selector switch
O TIMER(RLED) On timer LED control (power RLED control)
2
I MRDY(CE) I C bus open connection detect (connected to Vcc2 for CE at flash write)
O LEDPOW(GLED) Power GLED control
O N.C
O S_SEL AV selector switch
O VSHOUT Panel gate driver voltage control
32