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MSM7650 Datasheet

  • MSM7650

  • NTSC/PAL Digital Encoder

  • 34頁

  • OKI

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E2F0003-27-X1
隆 Semiconductor
MSM7650
隆 Semiconductor
NTSC/PAL Digital Encoder
This version: Jan. 1998
MSM7650
Previous version: Oct. 1997
GENERAL DESCRIPTION
The MSM7650 is a digital NTSC/PAL encoder. By inputting digital image data conforming to
CCIR Rep624-4, it outputs analog composite video signals and analog S video signals. For the
scanning system, interlaced or noninterlaced mode can be selected.
Since the MSM7650 is provided with pins dedicated to overlay function, text and graphics can
be superimposed on a video signal.
In addition, this encoder has an internal 9-bit DAC. So, when compared with using a conventional
analog encoder, the number of components, the board space, and points of adjustment can
greatly be reduced, thereby realizing a low cost and high-accuracy system.
The host interface provided conforms to Philips's I
2
C specifications, which reduces
interconnections between this encoder and mounting components.
The internal synchronization signal generator (SSG) allows the MSM7650 to operate in master
or slave mode.
FEATURES
鈥?Video signal system: NTSC/PAL
鈥?Scanning system: interlaced/noninterlaced
鈥?Input digital level: conforms to ITU-601 (CCIR601)
鈥?Input-output timing: conforms to CCIR Rep 624-4
鈥?Input signal (sampling ratio)
Y:Cb:Cr (4:2:2/4:1:1)
鈥?Supported sampling rates
鈥?/div>
NTSC 4Fsc (14.32 MHz)
鈥?/div>
NTSC ITU-R601 (13.5 MHz)
鈥?/div>
NTSC Square Pixel (12.27 MHz)
鈥?/div>
PAL ITU-R601 (13.5 MHz)
鈥?/div>
PAL Square Pixel (14.75 MHz)
鈥?Internal SSG circuit (internally generates sync signals)
鈥?Operation by external synchronization possible
鈥?Internal 3ch 9-bit DAC (samples by double frequency)
鈥?3-bit title graphics can be displayed
鈥?I
2
C-bus host interface function
鈥?Package
80-pin plastic QFP (QFP80-P-1420-0.80-BK) (Product name: MSM7650GS-BK)
1/34

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