Enhanced统计复用器是典型的有线电视前端基础设备，安装在本地有线电视服务提供商。统计复用器将多路数字信道作为输入端，实现一些典型的功能，包括视频内容编码、插入设计以及来自本地视频服务商所提供的内容，然后作为特定单一有线电视节目包传送给用户。
中电 TMS320C64xDSP系列可以实现下述DSP功能：视频自动代码转换
（transcoding）（从一种视频格式转换成另一种），自动视频转换（transrating）（将大比特率按比例缩放成小比特率），实时音频同步，支持音频编码/解码,视频流的复用/分路以及加密。
统计复用器的主要元器件为 TMS320C6455 数字信号处理
下图为典型的视频统计复用器的方框图
下面对元器件的性能和方框图进行描述：
The TMS320C6455 DSP offers improved performance, reduced code size plus more on-chip memory. In addition, this new DSP enables high-performance,multi-processing via Serial RapidIO™ and other new high bandwidth peripherals. These features enable the C6455 DSP to bring greater functionality and higher system performance to applications such as infrastructure video, telecom and imaging. As the telecom and video industries continue to develop new services, the programming flexibility of the C6455 DSP allows developers to keep pace with changes in standards and to quickly implement multiple voice and video CODECs in their system design.
<视频RONG> Key Features
★ High-performance TMS320C64x+™ DSP with speeds at 750 MHz,850 MHz and 1 GHz
★ Serial RapidIO: Up to 10 Gbits/sec full-duplex high-speed bus
★ Other high bandwidth peripherals: Gigabit Ethernet MAC, 500-MHz DDR2 and PCI-66
★ 2 MBytes of L2 memory
★ Based on the C64x+™ DSP core
★ Better debug through exception handling and cache coherency visibility
★ ST development with memory protection and real-time band
★ 20% higher cycle performance improves overall system performance via doubled multiplication bandwidth, instruction set enhancements for FFT, FIR and DTI, new EDMA 3.0 engine
★ 20–30% smaller code size reduces system cost:– 16-bit compact instructions and SPLOOP buffer
Applications
★ Infrastructure video
★ Telecom
★ Imaging
TMS320TCT6455 DSP方框图
（源自：IC网）
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