Second, holistic design scheme of the system is pointed out, mainly focusing on signal accessing circuit, the cell dealing with module, UTOPIA interface and CTRL-E interface controller and etc.

• 其次提出了系统设计方案,重点设计了基于双绞线的信号接入电路、信元处理模块电路、UTOPIA接口和CTRL-E接口控制器等,达到了提取信元的目的。