LC-20VM2E (serv.man2). Service Information - Sharp TV Service Manual (repair manual). Page 20

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LC-20VM2E
LC-121M2E
LC-150M2E
7. INTEGRATED CIRCUIT TERMINAL ARRANGEMENTS
7-1. IC2001 (QFP, 80pins) MICRO CONTROLER
Terminal No.
Terminal name
I/O
Function
Type
1
N. C
2
N. C
3
SCL
I/O
I
2
C bus serial clock line
OD
4
SDA
I/O
I
2
C bus serial data line
OD
5
H PDET
I
Headphon input pickup
OD
6
DCLK
O
Clock for communication
OD
7
DOUT
O
Data output for communication
OD
8
DIN
I
Data input for communication
OD
9
FS MUT
O
Front speaker MUTE output
OD
10
RS MUT
O
Rear speaker MUTE output
OD
11
N. C
12
N. C
13
CSYNC
I
Composite sync signal input
OD
14
KEY1
I
Key input 1
OD
15
REQ
O
“H” in SECAM mode, “L” in other modes.
PP
16
GAEN
I
G/A read enable
PP
17
MRDY
I
I
2
C bus opening/connection selection input
OD
18
SIN
I
232C data input
OD
19
SCLK
I/O
232C clock signal
PU
20
SOUT
O
232C data output
OD
21
N. C
22
5 VIN
I
DC/DC5V voltage input
OD
23
SCAN
O
PAL scanning line switching
OD
24
LMUTE
O
Lineout-Mute output
OD
25
N. C
26
N. C
27
CNV s s
GND connection
28
φ
O
Timing output
PP
29
RESET
I
Change to “Reset mode” in “L” state
30
Xin
I
Microcomputer oscillator connection
31
Xout
O
Microcomputer oscillator connection
32
V s s
I
GND terminal
33
STB
O
Microcomputer power OFF output
PP
34
POWOUT
O
DC/DC control output
PP
35
COCS
O
G/A chip selection output
PP
36
DACS
O
D/A chip selection output
PP
37
DA2CS
O
D/A2 chip selection output
PP
38
232CCS
O
232C chip selection output
PP
39
N. C
40
N. C
41
L/R
O
When the right and left are reversed: H, Normal: L
PP
42
YC
O
Dynamic YC separation
PP
43
AV/RGB
O
Analog SW selection 2
PP
44
Y/COM
O
Analog SW selection 3
PP
45
IN/OUT
O
Video 2 input/monitor output switching
PP
46
N358
O
“H” in N358 mode, “L” in other modes.
PP
47
N443
O
“H” in N443 mode, “L” in other modes.
PP
48
PAL
O
“H” in PAL mode, “L” in other modes.
PU
49
SECAM
O
“H” in SECAM mode, “L” in other modes.
PU
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