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MSM7650 Datasheet(PDF) 1 Page - OKI electronic componets |
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MSM7650 Datasheet(HTML) 1 Page - OKI electronic componets |
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1 / 34 page  ¡ Semiconductor MSM7650 1/34 ¡ Semiconductor MSM7650 NTSC/PAL Digital Encoder 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 I2C 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 • Video signal system: NTSC/PAL • Scanning system: interlaced/noninterlaced • Input digital level: conforms to ITU-601 (CCIR601) • Input-output timing: conforms to CCIR Rep 624-4 • Input signal (sampling ratio) Y:Cb:Cr (4:2:2/4:1:1) • Supported sampling rates • NTSC 4Fsc (14.32 MHz) • NTSC ITU-R601 (13.5 MHz) • NTSC Square Pixel (12.27 MHz) • PAL ITU-R601 (13.5 MHz) • PAL Square Pixel (14.75 MHz) • Internal SSG circuit (internally generates sync signals) • Operation by external synchronization possible • Internal 3ch 9-bit DAC (samples by double frequency) • 3-bit title graphics can be displayed •I2C-bus host interface function • Package 80-pin plastic QFP (QFP80-P-1420-0.80-BK) (Product name: MSM7650GS-BK) E2F0003-27-X1 This version: Jan. 1998 Previous version: Oct. 1997 |
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