Cirrus CS47048音频系统级芯片(ASOC)评估方案
Cirrus公司的CS470xx系列是新一代音频系统级芯片(ASOC)32位处理器,每秒的乘法运算(MAC/S)为300,000,000,目标应用在高保真对成本敏感的设计.该系列集成了S/PDIF Rx, S/ PDIF Tx,模拟输入,模拟输出和取样速率转换器(SRC),能简化系统设计和降低系统总成本.主要应用在汽车音响,DTV,MP3坞站,AVR和DVD Rx, DSP控制的扬声器(条形音箱,低音扩音箱).本文介绍了CS470xx系列主要特性, CS47048方框图, CDB47xxxD主板和子板方框图以及详细电路图.
The CS470xx family is a new generation of audio system-on-a-chip (ASOC) processors targeted at high fidelity, cost sensitive designs. The CS470xx simplifies system design and reduces total system cost by integrating the S/PDIF Rx, S/ PDIF Tx, analog inputs, analog outputs, and sample rate converters (SRCs). For example, a hardware SRC can
down-sample a 192 kHz S/PDIF stream to a lower Fs to reduce memory and MIPS requirements for processing. This integration effectively reduces the chip count from 3 to 1, which allows smaller, less expensive board designs.
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