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SPCA701A Datasheet

  • SPCA701A

  • DIGITAL VIDEO ENCODER FOR VIDEOCD

  • 16頁

  • ETC

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Preliminary
SPCA701A
DIGITAL VIDEO ENCODER FOR VIDEOCD
GENERAL DESCRIPTION
The SPCA701A is designed specifically for VideoCD, video games and other digital video systems, which require
the conversion of digital YCrCb (MPEG) data to analog NTSC/PAL video. The device supports a glue-less
interface to most popular MPEG decoders. The SPCA701A supports worldwide video standards, including
NTSC (N America, Japan) PAL-B, D, G, H, I (Europe, Asia). Furthermore, the SPCA701A operates with a
single 2x clock and can be powered with a single 3.3V supply. The composite analog video signal is output
simultaneously onto two outputs. Therefore, it allows one output to provide base-band composite video while
the other drives a RF modulator. Alternatively, analog luminance (Y) and chrominance (C) information is
available for interfacing to S-video equipment. As a slave, the SPCA701A automatically detects the input data
formats (PAL/NTSC, CCIR601) and switches internally to provide the proper format on the outputs. This feature,
along with the on-board voltage reference and single clock interface, makes the SPCA701A extremely simple to
use. In addition, use of 2x over-sampling on-chip simplifies external filter design resulting in reduced overall
system cost.
FEATURES
8-bit 4:2:2 YCrCb inputs for glue-less interface to
BLOCK DIAGRAM
VBIAS VREFOUT
FSADJUST
MPEG decoders
NTSC/PAL composite video outputs (North
CLK
Internal
VREF
COMP
American NTSC and Western European PAL)
CVBS or S-video outputs
P[7:0]
VRDAC
9
DAC
2x
Upsample
Latch
1.3MHz
LPF
VSYNC*
Mod.
and
Mixer
9
DAC
CVBS/C
CVBS/Y
3.3 V supply voltage
5 V tolerant for all digital I/O data pins
CCIR 601 operation
2x over sampling simplifies external filtering
9-bit DACs
MODE[3:0]
MASTER
HSYNC*
CBSWAP
SVIDEO
SLEEP
Master or slave video timing
Interlaced operation
Automatic mode detection/switching in slave mode
On-board voltage reference
32-pin PLCC package
APPLICATIONS
VideoCD
Karaoke/video games
Digital Video Disk (DVD)
Digital VCR
Digital set top box
Sunplus Technology Co., Ltd.
1
Rev.: 0.2
1999.12.07

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