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Datasheet: CS7114 (Myson Technology)

Digital Video Decoder

 

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GENERAL DESCRIPTION
FEATURES
TV Decoder
Myson-Century Technology
USA:
4020 Moorpark Avenue Suite 115
San Jose, CA, 95117
Tel: 408-243-8388 Fax: 408-243-3188
Sales@myson.com.tw
www.myson.com.tw
www.century-semi.com
Rev.0.9 March 2002
page 1 of 35
Myson-Century Technology, Inc.
Taiwan:
No. 2, Industry East Rd. III,
Science-Based Industrial Park, Hsin-Chu, Taiwan
Tel: 886-3-5784866 Fax: 886-3-5784349
CS7114
CS7114Auto detection of NTSC and PAL video
signal.
A single input crystal, 27MHz.
A line-locked PLL is used to generate pixel clock.
Four analog compostie and Y/C s-video inputs.
2 channels of 9-bit integrated ADC and associated
auto-clamping and AGC.
Adaptive 2D comb filter for Y/C separation
A chroma DLL is used to maintain chroma lock for
demodulation of the color information.
2x over-sampling to simplify external analog
filtering.
Color enhancement
contrast, brightness,
saturation and hue adjustment.
"SLICED" VBI data decoder
closed caption,
widescreen signal, teletext, clock regeneration
and byte synchronization.
8-bit, 16-bit 4:2:2 YCbCr output or 24-bit RGB
output.
100-pin LQFP.
Analog NTSC/PAL decoders have been around
for some time. However, they have been difficult to
use, required adjustment and offered limited video
quality. Using digital techniques to implement NTSC/
PAL decoding offers many advantages, such as
ease of use, minimum analog adjustments and
excellent video quality. The use of digital circuitry
also enables the design of much more robust and
sophisticate Y/C separator and genlock
implementations. The quality of Y/C separation plays
a major role in the overall video quality generated by
the decoder. However, S-video uses separate Y and
C analog video signals so higher quality may be
maintained by eliminating the composite endoding
and decoding processes.
Multimedia PC
Video compression system
Video conference
Video security system
VCR/Camcorder
APPLICATIONS
CS7114
Analog Signal
NTSC/PAL signal
(Composite
Digital Signal
RGB
CCIR601
CCIR656
or SVIDEO)
Micro controller
I
2
C Interface
3UHOLPLQDU\
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BLOCK DIAGRAM
page 2 of 35
Myson-Century Technology
CS7114
Sync Detect
and
Video Timing
Pipe
Delay
Output
Latch
Negative
Separation
Y/C
Phase
Detection
Demod
Color
Enhancement
Color
Formatter
Output
Select
Color
Space
Y
U
V
Y
Cb
Cr
R
G
B
SVIDEO
SVIDEO
sin
cos
PAL_SW
PALSA
mono
A/D
A/D
Y/CVBS
C
vsync
hsync
Field_ID
Vref
Href
PAL
burst_gate
vsynco
hsynco
Field_ID
Vref
Href
Pixelo[23:0]
vbi_dec
vbivalid
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