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| TI 统计复用器解决方案 | |||||
作者：61IC 文章来源：本站原创 点击数： 更新时间：2007-1-18  |
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TI 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. 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 ★ Enhanced 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 DCT, 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  TMS320C6455 DSP方框图 |
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