set_clock_latancy用于定于虚拟时钟与真实时钟的延时 考虑最糟糕的情况,评估setup时数据会使用最大延时,时钟使用最小延时;评估hold时,数据使用最小延时,时钟使用最大延时。
-early表示延时的可能最小值; -late 表示延时的可能最大值。 例如, set_clock_latency –source –late 1.234 sys_clk set_clock_latency –source –early 1.10 sys_clk … the board-level clock delay to sys_clk can be as late as 1.234ns and as early as 1.10ns early. 可见,early和late分别表示...
优化SRAM时序路径的创新实践:set_clock_latency指令的应用与反思 在现代芯片设计中,时序优化是确保系统性能和效率的关键一环。随着SRAM技术的进步,对于时序路径优化的需求也愈加迫切。其中,set_clock_latency指令的应用成为了设计者的重要工具。本文将对set_clock_latency进行深入探讨,并结合实际案例分享在SRAM时序优化中的...
在芯片设计的神秘世界里,有一个名为set_clock_latency的指令,它就像一把魔术钥匙,能够打开时序优化的大门。这篇文章不仅总结了我们在SRAM部分的交付经验,更是一次对set_clock_latency指令的深刻思考。在前面的文章中,我们探讨了SRAM wrapper的封装思路,以及SRAM选型与优化的过程,今天我们将进入这个话题的最后一环。 首...
Title: Understanding and Utilizing the set_clock_latency Function in Digital Design Introduction: In the realm of digital design, accurate timing plays a vital role in ensuring proper functionality and synchronization of circuits. One critical function that aids in achieving this accuracy is the set_...
I understand how to use -source to model the propagation delays of the external clocks through the board and clock buffer chips. What I don't get is how to use the "network" latency setting. Based on the documentation, this is supposed to represent "Network latency is the time a clock ...
Could anybody please share the SDC Command for setting clock latency for a "specific target clock". I am unable to find the correct SDC Command. -6.109(Setup Slack) ; APP-FPGA_Application_Logic:inst1|FilamentControl:inst30|PWM_Gen:inst1|\PWMControl:v_pulse_count_nom...
What's the value of set_clock_latency? This command adds delay to the clock and can be used to model external clock delays. Unless multiple related clocks are coming into the FPGA, it only affects I/O timing, but it certainly will give a different result. If the constraint is ...
LL库中的这些函数和循环用于配置和等待系统时钟和电源的稳定状态。在硬件仿真时，可能会出现这些函数导致...
2012-09-12 02:05 −一、存在背景分析 文档的说法是,set_input_delay和set_output_delay描述的是数据在端口处与某时钟的时序关系。这样的说法是很表面的。input/output其实是模拟数据在端口外的延时,实际上这是端口的一个外部约... freshair_cn