Defines the default insert_dft scan style, to use if a scan style is not specified using set_scan_style. The variable must identify a supported scan style; currently one of multiplexed_flip_flop, clocked_scan, lssd, aux_clock_lssd, combinational, or none. The default ismultiplexed_flip_flop...
1. DFT Compiler自动插入。2. 手动编写OCC 的verilog 电路,在dft_insert阶段。 ATPG工具使用的Transition faultmodel如下图 OCC :On Chip Clock OPCG :On-Product Clock Gating SCM:scan clock mux 上面三种是同一东西的不同叫法,就是为了at-speed ATPG测试时在function clock和shift clock之间切换的控制逻辑。不...
set_clock_gating_style,来设置ICG的insert标准; set_operating_conditions,来设置PVT corner。 先列到这,有需要在后面补充。 synopsys给DC的variable分了若干个group。 group有点多,不过好多group似乎平时又用不上。比如bsd(boundary scan)属于DFT的范畴,和test相关的group可以归到一类;asc和bc group,看上去有点用,...
clock_gating_pin# Remove DFT clock gating pin specificationremove_disable_clock_gating_check# remove_disable_clock_gating_checkremove_generated_clock# remove generated clockremove_propagated_clock# remove_propagated_clockreplace_clock_gates# replace_clock_gatesreport_clock# report clockreport_clock_gating#...
tcl # Check for DFT rule violations dft_drc # Preview the scan chains previewdft # Insert andoptimize scan insert_dft *** * * Execute additional UltraExpert optimization* * techniques, needed ** * *** # After the final compile check the DFTQoR # and write out the ...
3)熟练 4)精通半导体工艺-2RTL coding - 2综合 - 2时序约束 - 3APR - 3DFT - 2DRC/LVS - 3仿真 - 2形式验证 - 2以下是FAQ分类:2楼:时序约束,STA3楼:综合DC/RC4楼:APR (floorplan, place, CTS,route)5楼:验证(LEC,DRC,LVS等)6楼:DFT7楼:低功耗8楼:面试9楼:名词解释 希望我有时间完成所有的...
tcl ?? # Check for DFT rule violationsdft_drc ?? # Preview the scan chains preview_dft ?? # Insertand optimize scan insert_dft *** *??? * *? Execute additional Ultra/Expert optimization? * *? techniques, as needed??? * *???
时钟信号的延迟(latency)又称为插入延迟(insert delay),它包括时钟源 延迟和时钟网络延迟。次两种延迟分别用命令表示为:set_clock_late ncy 2.0 ource get_clocks CLKset_clock_late ncy 2.0 get_clocks CLK时钟信号的抖动又称为时钟的不确定性。时钟的偏差(skew)指的是同一时钟到达该时钟域内的不同寄存器之间的...
dft # Insert andoptimize scan insert_dft *** * * Execute additional /Expert * * techniques as needed* * * *** # After the final compile check theDFT # and write out the scan DEF file dft_drc –_estimate write_defout <my_design.def> Some Scan Specification...
1read_design.tcl~ preview_dft.tcl settings_insert_dft.tcl 2create_test_protocol.tcl insert_dft.tcl settings_protocol.tcl compile_and_save.tcl handoff.tcl 等文件 3、时序描述文件的导出 在DC中,使用write_sdf命令导出时序描述文件(该命令对当前设计有效),命令格式如下: ...