Description

The CS4954/5 provides full conversion from digital video formats YCbCr or YUV to 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.

Features

● Six DACs providing simultaneous composite,S-video, and RGB or Component YUV outputs

● Programmable DAC output currents for low impedance (37.5 Ω) and high impedance (150 Ω) 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, three-state DACs

CS4955属于集成电路（IC） > 编码器，解码器，转换器。凌云逻辑制造生产的CS4955编码器，解码器，转换器该系列产品可用于将信息封装或编码为适合于传输或存储的格式，和/或在通信路径的另一端执行逆运算，通常是通过使用某些形式的调制过程。示例包括从数字数据生成模拟视频信号的器件（反之亦然）；基于传输目的对按钮的状态进行编码的器件（实现远程控制功能）；以及便于将标准 UART 连接到标准红外收发器的器件。