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