Cirrus CS4953xx多标准音频处理和后处理解决方案
Cirrus公司的CS4953xx是32位音频DSP系列,工作频率150MHz,在片内的ROM中包括所有主流音频处理代码,从而节省了外接存储器和代码存储.不需要昂贵的外接SDRAM存储器就能完成Dolby数字环绕EX®, AAC多路, DTS-ES 96/24, THX Ultra2影院和Dolby耳机的译码任务,是下一代音频解决方案.本文介绍了CS4953xxx系列主要特性,方框图,CDB49x主板框图和相应的元件,DC4953x子板框图和相应的元件以及板的建立和连接图.
The CS4953xx DSP family are the enhanced versions of the CS495xx DSP family with higher overall performance and lower system cost. The CS4953xx includes all mainstream audio processing codes in on-chip ROM. This saves external memory for code storage. In addition, the intensive decoding tasks of Dolby Digital Surround EX®, AAC multi-channel, DTS-ES 96/24, THX Ultra2 Cinema and Dolby Headphone can be accomplished without the expense of external SDRAM memory.
With larger internal memories than the CS495xx, the CS49531x is designed to support up to 150 ms per channel of lip-sync delay. With 150 MHz internal clock speed, the CS4953xx supports the most demanding post-processing requirements. It is also designed for easy upgrading.
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