EUROPEAN STANDARD EN 50221 Common Interface Specification for Conditional Access and other Digital Video Broadcasting Decoder Applications-EUROPEAN STANDARD EN 50221 Common Interfa ce Specification for Conditional Access and ot her Digital Video

This application report introduces and describes an MP3 /AAC audio player for use with the TMS320C54x(TM) digital signal processor (DSP) devices. This audio player is based on Reference Framework Level 3 (RF3). Reference Framework for eXpressDSP(TM)

: 介绍一种以 TI公司 TM S320LF2407A 为核心控制器, 辅以一定的外围电路,对直流伺服电机进行数字闭 环控制的系统研制方法.它用光电脉冲编码器作为反馈装置,通过数字 PID 控制策略, 实现直流伺服电机的低速 运动和位置控制.该系统通过实验验证能达到较高的精度,具有硬件简单、性价比高的特点.-:The technology of a digital cont rol system o f a DC serv omo to r i s described based on