说明：  主要完成对语音信号的编解码、信道编码、加密、交织处理等,是对外部Memory接口、用户接口（LCD、键盘、触摸等）、语音接口、射频接口、电源管理等的命令控制，使各部分协调工作。
(It mainly completes the coding and decoding of voice signal, channel coding, encryption, interleaving processing, etc. it is the command control of external memory interface, user interface (LCD, keyboard, touch, etc.), voice interface, radio frequency interface, power management, etc., so that all parts work in coordination.)