CS4953屬于集成電路（IC）的DSP（數(shù)字信號處理器）。由凌云邏輯制造生產(chǎn)的CS4953DSP（數(shù)字信號處理器）數(shù)字信號處理器是類似于微處理器或微控制器的器件，但區(qū)別在于其內(nèi)部架構(gòu)經(jīng)修改，適用于對連續(xù)數(shù)據(jù)流連續(xù)執(zhí)行以乘法和加法運(yùn)算為主的算法，而不是以條件邏輯或大量并發(fā)進(jìn)程為主的算法。該器件通常用于諸如音頻或視頻信號處理等應(yīng)用。

Description

The CS4952/3 provides full conversion from YCbCr or YUV digital video formats into NTSC & PAL Composite and Y/C (S-video) analog video. Input formats can be 27 MHz 8-bit YUV, 8-bit YCbCr, or CCIR656 with support for EAV/SAV codes. Output video can be formatted to be compatible with NTSC-M, or PAL B,D,G,H,I,M,N, and Combination N systems. Also supported is NTSC line 21 and line 284 closed captioning encoding.

Features

● Simultaneous composite and S-video output

● Supports RS170A and CCIR601 composite

output timing

● Multi-standard support for NTSC-M, PAL (B, D,

G, H, I, M, N, Combination N)

● Optional progressive scan @ MPEG2 field rates

● CCIR656 input mode supporting EAV/SAV

codes and CCIR601 Master/Slave input modes

● Stable color subcarrier for MPEG2 systems

● NTSC closed caption encoder with interrupt

● Supports Macrovision copy protection in

CS4953 version

● lHost interface configurable for parallel or I2C

compatible operation

● lGeneral purpose input and output pins

● lIndividual DAC power-down capability

● lOn-chip voltage reference generator

● lOn-chip color bar generator

● l+5 volt only, CMOS, low power modes, tri-state

DACs