摘要：This paper presents a design method of ByPassing Unit(BPU) in 32-bit Digital Signal Processor(DSP)-MD32. MD32 is realized in 0,18μm technology, 1.8V and 200 MHz working clock. It focuses on the Reduced Instruction Set Computer(RISC) architecture and DSP computation capability thoroughly, extends DSP with various addressing modes in a customized DSP pipeline stage architecture. The paper also discusses the architecture and circuit design of bypassing logic to fit MD32 architecture. The parallel execution of BPU with instruction decode in architecture level is applied to reduce time delay. The optimization of circuit that serial select with priority is analyzed in detail, and the result shows that about half of time delay is reduced after this optimization. Examples show that BPU is useful for improving the DSP's *** forwarding logic in MD32 realizes 8 data channels feedback and meets the working clock limit.

摘要：随着PTN网络承载的业务量不断增加,PTN网络的带宽复用需求逐渐凸显,尤其是LTE业务开始发放友好用户以后,业务流量会出现较快增长。但是PTN实际可用带宽到底是多少,其统计复用功能到底如何发挥作用,这些问题长期以来没有准确的定量分析,本文主要对PTN网络涉及的带宽方面的问题进行梳理,并定量分析PTN网络实际可用带宽和统计复用功能方面的应用。