eldo_user

Post-Layout Simulation
DSPF Backannotation
DSPF Backannotation
Parasitic information is extracted into a DSPF (Detailed Standard Parasitic Format) file. There
are typically two scenarios for parasitic extraction:
• Only parasitic elements (resistors and capacitors) are extracted.
• All devices, parasitics and internal nodes are extracted together.
Eldo enables the annotation of parasitic information onto the netlist by including the DSPF file.
To include the DSPF file after extracting your parasitics, specify the .DSPF_INCLUDE
command together with some parameters and options to your netlist.
The SPEF (Standard Parasitic Exchange Format) standard for backannotation is supported by
the .SPEF_INCLUDE command. See “SPEF Backannotation” on page 398.
DSPF File Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393
Parasitic Network Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394
Eldo Post-Layout Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394
Eldo Post-Layout Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
DSPF Backannotation Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396
392
Eldo® User's Manual, 15.3