MSM7653 Datasheet, PDF (1/36 Pages) OKI electronic componets – NTSC/PAL Digital Video Encoder

E2F0026-29-63
¡ _¡ Semicond_Suc_etor_miconductor
MSM7653
NTSC/PAL Digital Video Encoder
This version: J_Mun_S._M19₇9₆9₅₃
Previous version: Jun. 1998
GENERAL DESCRIPTION
The MSM7653 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. For the scanning system, interlaced or noninterlaced mode can be selected.
Since the MSM7653 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 MSM7653 provides the optional functions such as Macrovision Rev. 7.01 (note 1) (note 2) and
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 MSM7653 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)
• 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
• Macrovision Rev. 7.01
• Package
56-pin plastic QFP (QFP56-P-910-0.65-2K) (Product name: MSM7653GS-2K)
1/35