WebbThe above SDC command will define a virtual clock “VCLK” with period 10 ns. Purpose of defining a virtual clock : The advantage of defining a virtual clock is that we can specify … Webb9 okt. 2024 · It says that the setup time slack of pll_clk is negative, I see the worst-case timing paths, I found that the launch clock is sys_clk,and the latch clock is pll_clk. Those …
SDC Clock multiplexer - How to false path the "Select"
Webb14 aug. 2015 · Destination Clock: clk90 rising at 25.000ns Clock Uncertainty: 0.200ns 周期约束分析 结合三节内容来看，注意式子 Slack = requirement - (data path - clock path skew + uncertainty)) 。 requirement是由时钟周期确定的，要判断时钟的周期约束是否得到满足，计算data path - clock path skew + uncertainty是否大于requirement 即可。 data path … Webb5 jan. 2013 · Recommended Initial SDC Constraints x 3.6.1.1. Create Clock (create_clock) 3.6.1.2. Derive PLL Clocks (derive_pll_clocks) 3.6.1.3. Derive Clock Uncertainty (derive_clock_uncertainty) 3.6.1.4. Set Clock Groups (set_clock_groups) 3.6.4. Using Entity-bound SDC Files x 3.6.4.1. Entity-bound Constraint Scope 3.6.4.2. Entity-bound … bunkhouse clearance
User:Svenska/QT-7 - linux-sunxi.org
Webb13 apr. 2024 · 帮我写个自用A*寻路算法，用来给TileMap生成导航网格，方便NPC脚本调用，用AStarMap命名。使用C#语言，行列可以后期输入，默认20*20吧，障碍物默认为Unity的Tilemap Collider 2D 组件，起点自身坐标，终点目标坐标，返回路径，游戏为俯视角四方向，有上，下，左右四个方向。 Webb14 jan. 2024 · [ 1.154912] sunxi-mmc sdc1: sdc set ios: clk 400000Hz bm OD pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B [ 1.166637] sunxi-mmc sdc1: smc 0 p1 err, cmd … Webb20 dec. 2010 · The design is described as follows. --- The FPGA provide a reference clk (125Mhz) to a SERDES chip. --- The SERDES chip ouputs a clk (62.5Mhz) and a databus (10-bit) to the FPGA. --- The 10-bit data should be sampled at both the rising edge and falling edge of the 62.5Mhz clk in the FPGA. halifax insurance car insurance