create_generated_clock-nameCLK_LSB-source[get_portsCLK][get_pins{DFF/Q}]-edges{135} create_generated_clock-nameCLK_LSB-source[get_portsCLK][get_pins{DFF/Q}]-edges{159} 分频器由源时钟下降沿触发: 源时钟下降沿触发 create_generated_clock-nameGCLK3-source[get_portsCLK][get_pins{DFF/Q}]-e...
create_generated_clock-nameCLK_LSB-source[get_portsCLK][get_pins{DFF/Q}]-edges{135} create_generated_clock-nameCLK_LSB-source[get_portsCLK][get_pins{DFF/Q}]-edges{159} 分频器由源时钟下降沿触发: 源时钟下降沿触发 create_generated_clock-nameGCLK3-source[get_portsCLK][get_pins{DFF/Q}]-e...
set_data_check -from [get_pins UBLK/EN] -to [get_pins UBLK/D] -setup 0.2 set_disable_timing [-from from_pin_name] [-to to_pin_name] cell_pin_list 命令中断了指定单元内的时序弧。 例子: set_disable_timing -from A -to ZN [get_cells U1] set_false_path [-setup] [-hold] [-...
set_disable_timing [-from from_pin_name] [-to to_pin_name] cell_pin_list 命令中断了指定单元内的时序弧。 例子: ● set_disable_timing -from A -to ZN [get_cells U1] set_false_path [-setup] [-hold] [-rise] [-fall] [-from from_list] [-to to_list] [-through through_list] [...
get_cells [-hierarchical] [-hsc separator] [-regexp] [-nocase] [-of_objects objects] patterns 命令会返回一个设计中与指定模型(pattern)匹配的单元的集合,通配符可用于匹配多个单元: get_cells RegEdge* foreach_in_collection cvar [get_cells -hierarchical *] ...
1.2 Cell或block是指一个模块的宏单元或library单元。可以设置power和wire load models的约束。可以用get_cells *等指令查看cell, 譬如DFF,BUF等都是cell。 1.3 port是指信号进出design的点,即top层input,output,clk等信号。可以用get_ports/all_inputs/all_outputs等指令查看port。 1.4 pin是指内部hierarchy的port...
foreach_in_collection cell $fullcollection { puts -nonewline $cell puts -nonewline ": " puts [get_cell_info -name $cell] }Return Value Code Name Code String Return TCL_OK 0 INFO: Operation successful TCL_ERROR 1 ERROR: Timing netlist does not exist. Use create_timing_netlist to ...
get_cells [-hierarchical] [-hsc separator] [-regexp] [-nocase] [-of_objects objects] patterns 命令会返回一个设计中与指定模型(pattern)匹配的单元的集合,通配符可用于匹配多个单元: get_cells RegEdge* foreach_in_collection cvar [get_cells -hierarchical *] ...
System interface(Driving cell load) 系统接口(驱动单元,负载) Design rule constraint(max fanout,max transition) Timing constraints(Clock definitions, clock latency, clock uncertainty, input/output delay) Timing exceptions (Multi-cycle and false paths) ...
set_driving_load -lib_cell IV {I1} 负载设置: 通过set_load设定port和net的负载属性，单位为文件中定义的电容。set_load -pin_load 0.001 [get_ports {port[10]}]其他约束如最大扇出、最大转换时间、创建时钟、生成时钟等，详细规则分别对应于set_max_fanout、set_max_transition、create_clock...