Sharp Aquos LC-22SV6U, Service Manual, Page: 22 / 118

22
LC-22SV6U
Pin functions of microprocessor IC (IC3501) RH-iXA705WJN1Q
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Pin name
VHOLD1
HLF1
N. C.
N. C.
1BIT_5VCONT
CSYNC
IREM1
BYTE
CNVSS
Xcin
Xcout
RESET
XOUT
VSS
XIN
VDD
OSCIN
OSCOUT
PSWIN
MP_RCS
BLK
N. C.
DAC1CS
N. C.
SCL1
SDA2
MP_RDA
N. C.
N. C.
N. C.
N. C.
R
G
B
TxD
RxD
SCLK
BUSY
1BIT_POW
1BIT_RST
MREADY/EPM
L_ERR
Pin function
VHOLD1
HLF1
Output port
Output port
Output port
TB1IN
TB0IN
BYTE
CNVss
Xcin
Xcout
RESET
Xout
Vss
Xin
Vcci
OSC1
OSC2
INT1
Input port
UUT1
OUT2
Output port
Output port
Output port
Input/output port
Input port
Output port
Output port
Output port
Output port
Output port
Output port
Output port
Output port
Input port
CLK
RTS
Output port
Output port
Input port
Input port
Description
For CCD
For CCD
L output fixed
L output fixed
One-bit amplifier regulator control
Composite sync signal
Remote control signal input
GND
GND in Flash writing (3.3V)
32-kHz oscillation input
32-kHz oscillation output
Reset input
H: Normal
L: Reset
System clock output
GND
System clock input
Power (3.3V)
OSD oscillation input
OSD oscillation output
Main power input
H: Main power off
L: Main power on
G/A chip select for read
OSD blank output
–
Gradation DAC1 chip select
L output fixed
I2C bus clock output
I2C bus data input/output
G/A data input for read
L output fixed
L output fixed
L output fixed
L output fixed
OSD R signal output
OSD G signal output
OSD B signal output
Flash write
Flash write
Flash write
Flash write
1-bit amplifier power relay control
1-bit amplifier AD reset
External bus mode shift input/Flash write
H: Normal
L: External bus mode shift request
Fluorescent lamp error detect output
H: Error
L: Normal