在高速视频系统中,信号完整性问题及互连延迟引起的时序偏移和紊乱可能导致设计失败,尤其是随着系统时钟频率的提高,数据的有效读写时间窗口越来越小,若要得到可靠的读写数据,需要进行精确的时序计算和分析。文章详细推导了系统时序所满足的约束条件,描述了如何通过仿真来指导实际布线,并举例说明了在实际系统布线中约束规则的设置。 In high-speed video systems, timing offsets and disturbances caused by signal integrity issues and interconnect delays can lead to design failures, especially as the system clock frequency increases, the effective window for data read and write times becomes smaller and smaller. Get reliable read and write data, the need for accurate timing calculation and analysis. The article deduces the constraints that the system timing satisfies in detail, describes how to guide the actual cabling through simulation, and illustrates the setting of the restraint rules in the actual system cabling.