描述 Description

GENERAL DESCRIPTION
The MSM7654, which is a digital video encoder supporting NTSC/PAL formats, converts digital image data to an analog video signal. The encoder can receive the digital image or RGB digital image signals conforming to ITU-R BT.601 as an input signal. The encoder can output simultaneously the composite video and S-video signals, and it can also output the RGB analog signal by switching. The encoder can control luminance (Y) signal output levels of the composite video and S-video signals.FEATURES
? Video signal system: NTSC/PAL
? Scanning system: interlaced/noninterlaced (NTSC : 262 lines/PAL : 312 lines)
? Input digital level: conforms to ITU-R BT.601 (CCIR601)
? Input-output timing: conforms to ITU-R BT.656 or ITU-R BT.624-4
? Input signal sampling ratio : Y:Cb:Cr = 4:2:2 or 4:1:1/R:G:B = 8:8:8
? Supported input interface
· ITU-R BT.656
· YCbCr format (8-bit input)
· ITU-R BT.601 (8-bit (Y) + 8-bit (CbCr) input)
· RGB (24-bit input)
? Pixel frequency (Sampling frequency) :
· 12.272727 MHz (24.545454 MHz) : NTSC Square Pixel
· 13.5 MHz (27 MHz) : NTSC/PAL ITU-R BT.601
· 14.318182 MHz (28.636364 MHz) : NTSC 4Fsc
· 14.75 MHz (29.5 MHz) : PAL Square Pixel
? Output format
· Selectable composite & S-video or RGB
· 37.5 W driving capability
? Master or slave operation (slave operation only in ITU-R BT.656 mode)
? Internal 3ch 10-bit DAC
? 3-bit title/graphics can be displayed (only for composite and S-video signals)
? Color bar function
? I2C-bus host interface function
? Brightness level adjust of 100% to 68.75% (only for composite and S-video signals)
? GENLOCK control
? 3.3 V single power supply (each I/O pin is 5 V tolerable)
? Package
? 64-pin plastic QFP (QFP64-P-1414-0.80-BK) (Product name: MSM7654GA)APPLICATIONS
? Video CD
? Video game equipment
? Electronic still cameras
? Video filing systems
? Video cameras
? Videophones
? Multimedia equipment
? Video printers
? Videoconferencing systems
? Scanners
? Video graphics boards
? Monitoring systems

特性 Features

? Video signal system: NTSC/PAL
? Scanning system: interlaced/noninterlaced (NTSC : 262 lines/PAL : 312 lines)
? Input digital level: conforms to ITU-R BT.601 (CCIR601)
? Input-output timing: conforms to ITU-R BT.656 or ITU-R BT.624-4
? Input signal sampling ratio : Y:Cb:Cr = 4:2:2 or 4:1:1/R:G:B = 8:8:8
? Supported input interface
· ITU-R BT.656
· YCbCr format (8-bit input)
· ITU-R BT.601 (8-bit (Y) + 8-bit (CbCr) input)
· RGB (24-bit input)
? Pixel frequency (Sampling frequency) :
· 12.272727 MHz (24.545454 MHz) : NTSC Square Pixel
· 13.5 MHz (27 MHz) : NTSC/PAL ITU-R BT.601
· 14.318182 MHz (28.636364 MHz) : NTSC 4Fsc
· 14.75 MHz (29.5 MHz) : PAL Square Pixel
? Output format
· Selectable composite & S-video or RGB
· 37.5 W driving capability
? Master or slave operation (slave operation only in ITU-R BT.656 mode)
? Internal 3ch 10-bit DAC
? 3-bit title/graphics can be displayed (only for composite and S-video signals)
? Color bar function
? I2C-bus host interface function
? Brightness level adjust of 100% to 68.75% (only for composite and S-video signals)
? GENLOCK control
? 3.3 V single power supply (each I/O pin is 5 V tolerable)
? Package
? 64-pin plastic QFP (QFP64-P-1414-0.80-BK) (Product name: MSM7654GA)