CS4954/55

The CS4954 and CS4955 provide full conversion from digital video formats YCbCr or YUV into NTSC and PAL Composite, Y/C (S-Video) and RGB or YUV analog video. Input formats can be 27 MHz, 8-bit YUV, 8-bit YCbCr or ITU R.BT656 with support for EAV/SAV codes. Video output can be formatted to be compatible with NTSC-M, NTSC-J, PAL-B, D, G, H, I, M, N and combination N systems. Closed caption is supported in NTSC. Teletext is supported for NTSC and PAL.

Six 10-bit digital-to-analog (D/A) converters provide two channels for an S-Video output port, one or two composite video outputs and three RGB or YUV outputs. Two-times oversampling reduces the output filter requirements and guarantees no D/A converter-related modulation components within the specified bandwidth of any of the supported video standards.

Parallel or high-speed I2C-compatible control interfaces are provided for flexibility in system design. The parallel interface doubles as a general-purpose I/O port when the CS4954/55 family is in I2C mode to help conserve valuable board area.