CS4954-CQZR

The CS4954 provides 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, NTSCJ, 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 DACs 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 DAC-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 is in I2C mode to help conserve valuable board area.

• Six DACs providing simultaneous composite, S-video, and RGB or Component YUV outputs
• Programmable DAC output currents for low impedance (37.5 ?) and high impedance (150 ?) loads.
• Multi-standard support for NTSC-M, NTSCJAPAN, PAL (B, D, G, H, I, M, N, Combination N)
• ITU R.BT656 input mode supporting EAV/SAV codes and CCIR601 Master/Slave input modes
• Programmable HSYNC and VSYNC timing
• Multistandard Teletext (Europe, NABTS, WST) support
• VBI encoding support
• Wide-Screen Signaling (WSS) support, EIA-J CPX1204
• NTSC closed caption encoder with interrupt
• CS4955 supports Macrovision copy protection Version 7
• Host interface configurable for parallel or I2C compatible operation
• On-chip voltage reference generator
• +3.3 V or +5 V operation, CMOS, low-power modes, tri-state DACs