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MSM7652 Datasheet

  • MSM7652

  • NTSC/PAL Digital Video Encoder

  • 243.50KB

  • OKI

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隆 Semiconductor
MSM7652
隆 Semiconductor
NTSC/PAL Digital Video Encoder
This version: Jun. 1998
MSM7652
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GENERAL DESCRIPTION
The MSM7652 is a digital NTSC/PAL encoder. By inputting digital image data conforming to
ITU Rec. 656 or ITURBT 601, it outputs selected analog composite video signals, analog S video
signals or Y, R-Y, B-Y signals. For the scanning system, interlaced or noninterlaced mode can be
selected.
Since the MSM7652 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 10-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 MSM7652 provides the optional functions such as Closed Caption Signal Generation
Function.
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 MSM7652 to operate in master
mode.
FEATURES
鈥?Video signal system: NTSC/PAL
鈥?Scanning system: interlaced/noninterlaced (NTSC : 262 lines/PAL : 312 lines)
鈥?Input digital level: conforms to ITU-R601 (CCIR601)
鈥?Input-output timing: conforms to ITU Rec. 656 or ITURBT 624-4
鈥?Input signal sampling ratio : Y:Cb:Cr = 4:2:2
鈥?Supported input formats
路
ITU Rec. 656
路
YCbCr 27 MHz format (8-bit input)
路
ITU-R601 13.5 MHz (8-bit (Y) + 8-bit (CbCr) input)
鈥?Output video signals
路
NTSC/PAL composite video signals and S video signals
路
Y, R-Y, B-Y analog signals (selectable)
鈥?Sampling frequency : 27 MHz
鈥?Internal SSG circuit (Can operate as a master in other operation modes than CCIR Rec. 656
mode)
鈥?Internal 3ch 10-bit DAC
鈥?3-bit title graphics can be displayed
鈥?Color bar function
鈥?I
2
C-bus host interface function
鈥?3.3 V single power supply (each I/O pin is 5 V tolerable)
鈥?Closed caption function
鈥?Package
56-pin plastic QFP (QFP56-P-910-0.65-2K)
(Product name: MSM7652GS-2K)
1

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