Read Sharp DV-720H (serv.man19) Service Manual online
35
DV-720S/DV-720S(K)
DV-720H
DV-720H
10-13. IC201 MC44724A VIDEO ENCODER
Pin No.
Terminal name
I/O
Operation function
1
CVBS/Cb/B1
O
Analog composite video signal output or Cb or B signal output current drive (positive)
2
CVBS/Cb/B1
O
Analog composite video signal output or Cb or B signal output current drive (negative)
3
CVBS/Cb/B1 Vdd
Power Supply for CVBS / Cb/B DAC1 circuit
4
Y/G 1
O
Analog luminance or G signal output current drive (positive)
5
Y/G 1
O
Analog luminance or G signal output current drive (negative)
6
Y/G 1Vdd
Power Supply for Y/G DAC1 circuit
7
C/Cr/R 1
O
Analog chrominance signal output or Cr or R signal output current drive (positive)
8
C/Cr/R 1
O
Analog chrominance signal output or Cr or R signal output current drive (negative)
9
C/Cr/R 1Vdd
Power Supply for C/Cr/R DAC1 circuit
10
DA Vss
Ground for DAC circuit
11
Ibias 1
O
Reference current for the 1st set of 3 DACs
12
VRef 1
Reference full scale voltage for the 1st set of 3 DACs
13
DA Vdd
Power Supply for DACs
14
VRef 2
Reference full scale voltage for the 2nd set of 3 DACs
15
Ibias 2
O
Reference current for 2nd set of the 3 DACs
16
NC
No connect to pin
17
CVBS/Cb/B2
O
Analog composite video signal output or Cb or B signal output current drive (positive)
18
CVBS/Cb/B2
O
Analog composite video signal output or Cb or B signal output current drive (negative)
19
CVBS/Cb/B2 Vdd
Power Supply for CVBS / Cb/B DAC2 circuit
20
Y/G 2
O
Analog luminance or G signal output current drive (positive)
21
Y/G 2
O
Analog luminance or G signal output current drive (negative)
22
Y/G Vdd
Power Supply for Y/G DAC2 circuit
23
C/Cr/R 2
O
Analog chrominance signal output or Cr or R signal output current drive (positive)
24
C/Cr/R 2
O
Analog chrominance signal output or Cr or R signal output current drive (negative)
25
C/Cr/R 2Vdd
Power Supply for C/Cr/R DAC2 circuit
26
ChipA
I2C chip address select {0 : 40(hex)/41(hex) 1 : 1D(hex)/1E(hex)}
27
TEST
I
TEST pin (Ground)
28
DVss
Ground for Digital circuit
29
clock
I
27MHz clock input
30
DVdd
Power Supply for Digital circuit
31
Reset
I
Reset signal, active LOW
32
PAL/NTSC
I
NTSC/PAL select. This pin is sampledonly at Reset.(NTSC : Low PAL : High)
33
SO
z(O)
In SPI mode, serial data output / In I2C mode, grounded.
34
SDA/SI
I/O(I)
Serial data input, Open drain output / If SPI mode, serial data input
35
SCL/SCK
I
Serial clock
36
SEL
I/(I)
Connect to Ground / If SPI mode, this pin is chip select
37
DVdd
Power supply for Digital circuit
38
DVss
Ground for Digital circuit
39-46
DVIA7-0
I/O
8-bit Multiplexd Y/Cr/Cb 4:2:2 data (ITU Rec656/601) input (DVIA) or Multiplexd Y data
(ITU-Rec656/601) input in 16-bit input mode
(ITU-Rec656/601) input in 16-bit input mode
47
Vmute
I
Video mute on Reset (0: normal, 1: mute)
48
C/Fsync/VBI
I/O
Csync/Frame sync input/output
49
F/Vsync
I/O
Frame sync or Vertical sync input/output
50
Hsync
I/O
Horizontal sync input/output
51
A/B sel
I
Switch control for 8-bit x 2 Mutiplexed 4:2:2 data (ITU Rec656/601) input (DVIA) or (DVIB)
52-55
DVIB7-4
I/O
8-bit Multiplexed 4:2:2 data (ITU Rec656-601) input (DVIB), or Multiplexed Cr/Cb data
(ITU Rec656/601) input in 16-bit input mode
(ITU Rec656/601) input in 16-bit input mode
56
DVss
Ground for Digital circuit
57
DVdd
Power Supply for Digital circuit
58-61
DVIB3-0
I/O
Multiplexed 4:2:2 data (ITU Rec656/601) input (DVIB), or Multiplexed Cr/Cb data
(ITU Rec656/601) input in 16-bit input mode
(ITU Rec656/601) input in 16-bit input mode
62
TP
I/O
Test data input/output (Grounded)
63,64
NC
No connect to pin (Ground)
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