摘要
介绍了一种新颖的面向ＬＡＮ和Ｉｎｔｒａｎｅｔ的ＩＰ网络语音终端设备（即ＩＰ电话机）的设计。该ＩＰ电话机采用ＴＩ公司的低功耗定点数字信号处理器ＴＭＳ３２０Ｃ５４０２作为话音编解码器，Ｍｏｔｏｒｏｌａ公司的ＭＰＣ８６０Ｔ作为控制器。系统外围提供了ＵＳＢ、ＲＳ２３２和ＲＪ４５等多种通信接口，从而使该话机既可以作为桌面ＰＣ的语音外设，又可以直接作为ＩＰ网络的终端设备使用。文中给出了话机的硬件设计和软件结构。
A DSP-based solution to LAN/Intranet-oriented IP telephone is presented. This IP Telephone can be used either as a desktop PC peripheral or as an Internet network terminal. Its core are TMS320C5402 in charge of voice codec and MPC860T in charge of communications protocol processing and control logic. Several kinds of interface including USB, RS232,RJ45 are designed to allow IP telephone to connect with other equipment in flexible ways. Some details of hardware design and software architecture are discussed in this paper.
出处
《半导体技术》
CAS
CSCD
北大核心
2001年第2期5-9,共5页
Semiconductor Technology
