E2F0023-29-83
¡ Semiconductor
MSM7654
¡ Semiconductor
NTSC/PAL Digital Video Encoder
This version: Aug. 1999
MSM7654
Previous version: Dec. 1998
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
• I
2
C-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)
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