ADSL系统远端收发器中DSP/MCU的组合应用

DSP/MCU Combination Application on ADSL Remote Transceiver

介绍了 ADSL基本原理 ,指出单片 DSP芯片组成的 DSP系统已很难适应 ADSL系统的功能要求 ,而多片 DSP芯片组成的并行处理系统 ,却增加了并行芯片之间的通信负担 ,实际仍不能解决问题。与此同时增加了系统的复杂性 ,使系统体积过大 ,难以应用于实际。本文提出了DSP/MCU组合方案 ,并结合工作实际给出了具体设计方案 ,结果表明 DSP/MCU组合应用 ,系统简单易行 ,可以充分发挥 DSP长于密集数字信号处理 ,MCU长于智能控制且编程相对容易的优点。

ADSL fundamental principle was introduced in this paper,DSP system which is made up of single DSP chip is unfittable for the signal process requirement of ADSL ATU-R equipment,parallel DSP system leads to communication load and complexity,which is difficult for practual application.In this paper,DSP/MCU combination application was proposed,it shows that DSP/MCU combination application can ffully exert the merit of DSP which specializes in thick digital signal process and MCU which specializes in intelligent control and is easily programmed.