set_clock_groups是一种在Synthesis、P&R和STA工具中指定设计中时钟关系更加有效的方法。 set_clock_groups -asynchronous -group CLKA -group CLKB 此命令有三个选项。 -asynchronous -logical_exclusive -physically_exclusive -asynchronous 两个(或多个)时钟是异步时,这意味着它们之间没有相位关系。 set_clock_gro...
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...
在“Linux common clock framework(2)_clock provider”中已经讲过,clock provider需要将系统的clock以tree的形式组织起来,分门别类,并在系统初始化时,通过provider的初始化接口,或者clock framework core的DTS接口,将所有的clock注册到kernel。 clock的注册,统一由clk_regitser接口实现,但基于该接口,ke...
Those two clocks are completely unrelated (have different ideal clock sources), when I'm trying to use the "set_clock_groups" definition In my SDC file, as follow: set_clock_groups -asynchronous -group {sys_clk} -group {uart_pll|altpll_component|auto_generated|pll|...
set_clock_groups -asynchronous -group {clkA PLL1_c0 PLL1_c1 } -group {clkB PLL2_c0 PLL2_c1 } -group {dsp_clk PLL3_c0 PLL3_c1 PLL3_c2 } That's the basic syntax. In essence, what it does is a set_false_path between the clocks n the first group to th...
In an asynchronous or packet communication system terminal B transmits data at a rate fB to terminal A. Synchronizing logic (SL) monitors the rate at which the data is received and determines an average. An oscillator (OSC) is controlled by SL to provide a clock signal for terminal A at ...
* Event channels, except on the 2-series tinyAVRs (and all non-tiny modern AVRs) are subdivided into two types - synchronous (to the system clock) and asynchronous. Not all generators can be used with a synchronous channel, and some event users can only use the synchronous channels, and...
IAsynchronousDataRetriever 接口 IChangeConflict 接口 IChangeUnitException 接口 IChangeUnitListFilterInfo 接口 IClockVector 接口 IClockVectorElement 接口 IConstructReplicaKeyMap 接口 ICoreFragment 接口 ICoreFragmentInspector 接口 ID_PARAMETER_PAIR结构 ID_PARAMETERS 结构 ...
Software-generated interrupts are synchronous: given a specific path, they will always occur at a specific time, as a consequence of executing a specific instruction. Hardware-generated interrupts are asynchronous: they can happen unpredictably, at any time. Interrupts and exceptions are identified by...
July 2011 Cisco IOS Multiprotocol Label Switching Command Reference MP-447 set extcomm-list delete set extcomm-list delete To allow the deletion of extended community attributes based on an extended community list, use the set extcomm-list delete command in route-map configuration mode. To negate...