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7. Main board IC descriptions
7.1 SPV302A
7.1.1 General Description
The SPV302A is a highly integrated processor solution for multi-media LCD/CRT TV applications. It is a dual source device
with input sources from D-sub. This chip provides 3D motion adaptive de-interlacing, 2:2/3:2 film mode detection, video PIP/POP,
SDRAM controller, color controls, OSD and embedded CPU. In addition to being a complete solution for multi-media LCD/CRT
TV applications, the SPV302A also has the full service and support of Sunplus.
7.1.2 Block diagram
Port A
Port B
YUV/RGB
interface
Port C
Sync
signals
Sync
Processor
ViewSonic Corporation
SDRAM/SGRAM
Video mode
main
DRAM
sub
controller
Graphic mode
DMA
controller
Timing
Auto
Generator
Calibration
deinterlace
Scaling up/down
engine
De-interlaced
timing
generator
Display
generator
CPU
Flash ROM
18
Skin/Gain/
table/Dithering
timing
OSD MUX
OSD engine
Offset
Gamma
Display timing
output
N1750w
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