connect_pin, copy_objects, create_cell, create_edit_group, create_net, create_net_shape, create_pg_network, create_physical_buses_from_patterns, create_pin_guide, create_placement_blockage, create_port, create_route_guide, create_terminal, create_text, create_user_shape, create_via, cut_objec...
create_placement -floorplan[-congestion]set_fixed_objects[get_flat_cells -filter"is_hard_macro"]在place_opt之前要把hard_macro fix住 Place I/O Pins 摆完了macro之后需要摆I/O Pins 通常摆macro时会把他摆在block的边上,但有时候会挡住macro 摆pin时需要注意,有时候block之间会有一些交互,故可能会有对...
When you specify -off_edge auto, you must create a pin guide that is associated with this pin. The pin guide must be in the center of the block boundary. The pin is placed at the optimal position guided by the pin guide. If you do not provide a pin guide, the pins are placed in...
选择Manuel connection,依次命名Power net,Power pin,Ground net,Ground pin为VDD和VSS,Create port选择Top 此步骤完成后芯片预览图不会更新,但在Shell中会打印成功连接电源的信息 4.创建电流环 Preroute ---> Create Rings Nets中填写VDD VSS,Horizontal为水平布线,层数选择为第五层金属(METAL5),Vertical为垂直布线...
相应的命令为:read_pin_pad_physical_constraints /xxx/data/main_pad.tdf 创建Floorplan 在Layout Window的菜单栏中依次选择“Floorplan”→“Create Floorplan”。 在ICC中有三种布局规划控制方案,其中: 1)Aspect ratio: 这种是指定芯片高度和宽度比值的方案,可以设置Core的利用率。
ICC的流程如下：（1）import design(netlist/sdc/database)——（2）create_floorplan或adjust floorplan——（3）placement ——（4）cts——（5）route——（6）final signoff （3）具体每一步过程及注意点（操作点）（4）Import design具体操作：set_link_library xxx set_target_library xxx create_mu_lib ...
SPG:synopsys physical guidence Congestion-Focused Setup Steps density: 密度 QoR主要分为三部分:Congestion/Timing/Power Congestion 跑完place_opt后先分析congestion和cell/pin density 如果有拥堵问题的话,可以使用以下方法去解决congestion Timing Power/Area ...
当出现这样的问题我们可以使用Stamp模型来解决或者使用virtual clock旁通clkbuf(create_clock name VCLK p 2 w 0 1 find(pin,U49/NQ)set_clock_latancy 0.2 source VCLKset_ideal_net find(net,VCLK)。在时序分析中,经常会检查setup/hold、removal/recovery和min pulse width。然而有些会是untested。这 31、...
文稿compiler实验室1 synopsys 20 icc后端labguide.pdf,0A IC CompilerTM GUI Learning Objectives This lab has two purposes: 1. To familiarize you with the IC Compiler GUI. 2. To learn how to get help with commands and variables. You will work with a design t
If the logic libraries contain a mixture of both NLDM and CCS models, by default, the tool uses the CCS capacitance and timing data; you can control this by setting the lib_pin_using_cap_from_ccs and lib_cell_using_delay_from_ccs variables before loading the libraries. The link libraries...