MSM7652 Datasheet, PDF (1/36 Pages) OKI electronic componets – NTSC/PAL Digital Video Encoder

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MSM7652
NTSC/PAL Digital Video Encoder
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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 I²C 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
• Video signal system: NTSC/PAL
• Scanning system: interlaced/noninterlaced (NTSC : 262 lines/PAL : 312 lines)
• Input digital level: conforms to ITU-R601 (CCIR601)
• Input-output timing: conforms to ITU Rec. 656 or ITURBT 624-4
• Input signal sampling ratio : Y:Cb:Cr = 4:2:2
• Supported input formats
· ITU Rec. 656
· YCbCr 27 MHz format (8-bit input)
· ITU-R601 13.5 MHz (8-bit (Y) + 8-bit (CbCr) input)
• Output video signals
· NTSC/PAL composite video signals and S video signals
· Y, R-Y, B-Y analog signals (selectable)
• Sampling frequency : 27 MHz
• Internal SSG circuit (Can operate as a master in other operation modes than CCIR Rec. 656
mode)
• Internal 3ch 10-bit DAC
• 3-bit title graphics can be displayed
• Color bar function
• I²C-bus host interface function
• 3.3 V single power supply (each I/O pin is 5 V tolerable)
• Closed caption function
• Package
56-pin plastic QFP (QFP56-P-910-0.65-2K) (Product name: MSM7652GS-2K)
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