在标准单元库的建立中,通过Liberate提取时序信息时,需要带有寄生参数的网表。请问这个带有寄生参数的网表是怎么获得?
我通过Calibre PEX提取寄生参数网表,得到3个文件,分别是:INVM0R.pex.netlist, INVM0R.pex.netlist.INVM0R.pxi, INVM0R.pex.netlist.pex,详细内容见附件。
用这3个文件作为输入的SP网表时,会报下面的错误:
- *Error* (char_library) : Failed to find cell 'N_12_LLRVT' for instance 'XMMN1' in netlist/model file, or been defined as a leaf cell.
- *Error* (char_library) : Cannot proceed with cell DFQRM1RA since the netlist is incomplete.
- ERROR (LIB-203): (char_library): Cell 'DFQRM1RA' is scheduled for characterization but has no netlist, has an empty subckt or has no port on the subckt. This cell will be skipped. Check the netlist and rerun.
- Processing cell: INVM0R
- *Error* (char_library) : Cannot proceed with cell INVM0R since the netlist is incomplete.
- ERROR (LIB-203): (char_library): Cell 'INVM0R' is scheduled for characterization but has no netlist, has an empty subckt or has no port on the subckt. This cell will be skipped. Check the netlist and rerun.
- Processing cell: ND2M0R
- *Error* (char_library) : Cannot proceed with cell ND2M0R since the netlist is incomplete.
- ERROR (LIB-203): (char_library): Cell 'ND2M0R' is scheduled for characterization but has no netlist, has an empty subckt or has no port on the subckt. This cell will be skipped. Check the netlist and rerun.
复制代码 但是如果把这个网表换成我自己写的,如:
- .subckt INVM0R Z A VDD VSS
- MN0 Z A VSS VSS N_12_LLRVT w=0.18u l=0.06u
- MP0 Z A VDD VDD P_12_LLRVT w=0.27u l=0.06u
- .ends INVM0R
复制代码 就不会报错,请问这是什么原因?是因为我使用的方式不对吗?
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