This option is commonly used to constrain an input port relative to more than one clock edge, as, for example, DDR interface
This option is commonly used to constrain an input port relative to more than one clock edge, as, for example, DDR interface发布于 2023-04-12 20:04・上海 FGPA 赞同7添加评论 分享喜欢收藏申请转载 写下你的评论... 还没有评论,发表第一个评论吧...
This option is commonly used to constrain an input port relative to more than one clock edge, as, for example, DDR interface
I currently have a query wrt set_input_delay / set_output_delay -min (wrt hold) : My example below : #***# Create Clock#*** set PERIOD_CLK 100.000create_clock - {clk} -period $PERIOD_CLK -waveform { 0.000 50.000 } [get_ports{in_clk}] #***# Create the associated ...
Hello, I was doing some research on the Multicyle Exceptions and found a great example: http://www.altera.com/support/examples/timequest/exm-tq-sdc-exceptions.html?gsa_pos=4&wt.oss_r=1&wt.oss=set_multicycle_path examples When I was looking over the example I...
Without this option, any set_input_delay overrides the previous one - so in your example only the last constraint (clk3) actually has any effect. You need to put the -add_delay on the clk2 and clk3 ones to keep the previous ones. Second, if you do this (and I am assuming th...
Example 1 If the MMCM's phase shift is negative or zero and the MMCM output clock is 100Mz, you can constrain the interface with the below constraints. # Create clock on the clock input pad and use it as reference clock in set_input_delaycreate_clock -period 10.000 -name clk [get...
Taking this JTAG requirements as example, I was wondering if my set_input_delay / set_output_delay command's values are right. Thanks again, imuguruza LikeLikedUnlikeReply imuguruza (Member) 7 years ago I have made some rearrangements under the PS, so now the JTAG port is under MIO pins...
A continuous state feedback control independently uncertain parameters is acquired. It can simultaneously stabilize this kind of systems. Finally, the effectiveness of the proposed scheme is illustrated by a simulation example.Dingchao WangLinxin MengCong LinXiushan Cai会议论文...
Input delay Example: 1.2 Output delay Example: 2 源同步: 源同步,在发送端将数据和时钟同步传输,在接收端用时钟沿脉冲来对数据进行锁存,重新使数据与时钟同步。源同步接口最大的优点就是大大提升了总线的速度,可以是SDR方式,也可以是DDR方式。 2.1 SDR 中心对齐 input delay 2.2 SDR 中心对齐 output delay ...