set_clock_groups-name clk_group-asynchronous-group[get_clocks clk1]-group[get_clocks clk2] 设置多个-group时,groups之间的时钟如clk1和clk2不会进行时序分析 d)场景4:多个时钟组,多个时钟 set_clock_groups-name clk_group-asynchronous-group[get_clocks{clk1 clk2}]-group[get_clocks{clk3 clk4}] ...
set_clock_groups -name clk_group -asynchronous -group [get_clocks {create_clk1 gen_clk_2}] 3.2 优先级 异步时钟和非扩展时钟是没法正确地进行时序分析,它们之间的时序路径在分析时应该使用set_clock_groups进行忽略。相比于其他时序例外的命令,set_clock_groups的优先级最高,如果需要对异步时钟进行分析,则不...
set_clock_groups -name clk_group -asynchronous -group [get_clocks clk1] -group [get_clocks clk2] 时序报告inter clock paths中已不存在clk1到clk2的时序路径,即set_clock_groups的优先级更高,已将set_max_delay/set_min_delay覆盖 3.4.2 MAX/MIN约束对象非时序起点/终点 在set_max_delay/set_min_d...
set_clock_groups -name async_ADC_ETH -asynchronous -group [get_clocks -include_generated_clocks ...
`-asynchronous`表示两个时钟之间无相位关系，如`set_clock_groups -asynchronous -name my_ASYNC -group {CLKA CLKA_div2} -group {CLK_OSC}`，工具将忽略这些时钟之间的时序路径，只分析Crosstalk。`-logical_exclusive`用于定义逻辑上无路径关联的时钟，如`set_clock_groups – logically_exclusive ...
set_clock_groups -asynchronous -group {[get_clocks -of_objects [get_pins -hier -filter name=~*_SYSCTRL/u_CLK_SYS/inst/mmcme4_adv_inst/CLKOUT0]] [get_clocks -of_objects [get_pins -hier -filter name=~*_SYSCTRL/u_CLK_SYS/inst/mmcme4_adv_inst/CLKOUT1]]} But this is giving cr...
set_clock_groups [-asynchronous | -exclusive] -group <clock name> [-group <clock name>] [-group <clock name>] ... a group is defined with the -group option. the timequest timing analyzer cuts the timing paths between clocks each of the separate -groups group...
set_clock_groups -asynchronous -group { \ } \ -group { \ } \ -group { \ } \ -group { \ } Cut and paste the clock names into groups to define their relationship, adding or removing groups as necessary. Format the groups to make the code readable. ...
clk_100和clk_66仍然是两个不同的时钟域,这也是FALSE PATH: set_false_paths –from [get_clocks clk_100] –to [get_clocks clk_66] set_false_paths –from [get_clocks clk_66] –to [get_clocks clk_100] 实际上,这两条FALSE PATH可以用一条命令来代替: set_clock_groups –exclusive –group ...
The following table displays information for the set_clock_groups Tcl command: Tcl Package and Version Belongs to ::quartus::sdc 1.5 Syntax set_clock_groups [-h | -help] [-long_help] [-asynchronous] ...