Prima LC-20S3 Service Manual page 13

67 SCART_R
68 SCART_G
69 SCART_B
70 FBL
71 656I07
72 656I06
73 656I05
74 656I04
77 656I03
2.MST518 digital image processing
MST519VA (N202) is digital image processing chip, it process the YPBPR, VGA, DVI signal and the
ITU656 signal from VCT4993 (N102), through auto ADC correction and internal arithmetic
processing, then outputs 24 BIT TTL level RGB signal to socket X202. Through N501 cable, the
signal is sent to LCD panel interface to perform reproduction of image.
MST518 PIN instructions:
Pin Function
43 DVI_IN R+
44 DVI_IN R-
46 DVI_IN G+
47 DVI_IN G-
49 DVI_IN B+
50 DVI_IN B-
52 DVI_IN CLK+
53 DVI_IN CLK-
30 DVI_IN
DDC_SCL
29 DVI_IN
DDC_SDA
34 XIN
35 XOUT
MST518 internal block diagram
Analog RGB0
Analog RGB1
Analog
HSYNC/VSYNC
DVI
Video Port
Pin Function
65 VGA RIN
63 VGA GIN
60 VGA BIN
40 HSYNC
41 VSYNC
75 CRIN
72 YIN
70 CBIN
82 SCZ
84 SCL_M
143 HSYNC
144 VSYNC
Dual
Interface
Engine
HOST
ITU656
interface
MCU
Figure1-2 MST518internal block diagram
114 AIN1L
115 AIN2R
116 AIN2L
117 AIN3R
118 AIN3L
122 AOUT1R
123 AOUT1L
124 SAPEAKEAR
125 SAPEAKEAL
Pin
83
33
85
86
87
90
91-98
103-110
131-138
115-120
127-128
Display
Processing
Engine
Clock
OSD
Gen
XTAL/EXT CLK
11
Function
SDA_M
RESET
INT
PWM
LCDON
656 CLK
656I00-656I07
BA(0)-BA(7)
RA(0)-RA(7)
GA(0)-GA(7)
Multi-Format
Panel To Panel
Interface