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

CDB4955A属于开发板，套件，编程器 > 评估和演示板及套件。凌云逻辑制造生产的CDB4955A评估和演示板及套件该系列产品提供了一种方便的方法，在经过验证的实施环境中评估某些重点器件的性能或特性。评估方法通常有完善的文档说明，并且视乎具体情况由评估软件提供支持。产品通常由印刷电路板组成，板上已装有重点器件以及必要或有用的支持元器件，另外也可能包括其他组件，例如电缆或电源。对于数量特别多或类别独特的器件类别(如 ADC、DAC 和开关模式电源)，评估平台可组合为一个单独的产品系列。