LG LST-4200A Service Manual - Page 52
Video Processing Block Diagram
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7. VIDEO PROCESSING BLOCK DIAGRAM IC200 3V I2C IC102 I2C HUB. (PCA9516) 5V I2C NTSC VIDEO IC301 NTSC PIXEL DECORDER (VPX3326E) YCbCr HD2 (LGDT 1102A) Digital R(8bit)G(8bit)B(8bit) IC302 DOUTHACTIVE DOUT_CLK Buffer (74LCX157) IC208 HP_HSYNC, HP_VSYNC DVI_CLK IC202 DVI Transmitter (Sil170) Line Driver (74HC540) TMDS CH0,1,2+(TX0, TX1, TX2) TMDS CLK +(TXC) HSYNC_OUT, VSYNC_OUT RGB HP_G, HP_B, HP_R FL300~302 LPF (TOKO 25M) X 3 IC303 AMP (LMH6683) Q311~Q316 Buffer TR YPbPr BYPBPR_MUTE_CTRL BRGB_MUTE_CTRL HP_CVBS_OUT HP_SVIDEO_Y HP_SVIDEO_C Q308~Q310 MUTE control TR IC304 AMP (LMH6683) BVCR_MUTE_CTRL I2C Ext. (82B715) IC300 DVI Out RGB RGB Video Out YPbPr Video Out VCR Out S-Video Out 3-49 3-50
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3-49
3-50
7. VIDEO PROCESSING BLOCK DIAGRAM
HD2
(LGDT
1102A)
YPbPr Video Out
AMP
(LMH6683)
Line Driver
(74HC540
)
RGB
HSYNC_OUT, VSYNC_OUT
RGB Video Out
LPF
(TOKO 25M)
X 3
DVI
Transmitter
(S
il170)
TMDS CH0,1,2+-
(TX0, TX1, TX
2)
TMDS CLK +-
(TXC)
I2C Ext.
(82B715
)
DVI Ou
t
Digital R(8bit)G(8bit)
B(8bit)
3V I2C
VCR Out
S-Video Out
HP_CVBS_OUT
HP_SVIDEO_Y
HP_SVIDE
O_C
AMP
(LMH6683
)
RGB
IC302
IC300
IC202
IC303
IC304
FL300~302
IC
200
DOUTHACTIVE
DOUT_CL
K
Buffer
(74LCX157)
DVI_CLK
5V I2C
HP_HSYNC,
HP_VSYNC
HP_G, HP_B, HP
_R
Buffer
TR
YPbPr
Q311~Q
316
BYPBPR_MUTE_CTRL
BRGB_MUTE_CTRL
MUTE
control
TR
BVCR_MUTE_C
TRL
I2C HUB.
(PCA9516
)
Q308~Q310
NTSC PIXEL
DECORDER
(VPX3326E)
IC
301
NTSC VIDEO
YCbCr
IC102
IC208