read_lef filename
where filename is the name of a LEF format file containing either technology information about route layers, descriptions of standard cell macros, or both.
The read_lef command reads information from a LEF format file that qrouter needs to set up the environment for routing. This is generally the first command to be issued to qrouter, and must be given before the read_def command.The configuration file (in the qrouter version 1.1 format), loaded either as specified on the OS command line (with the "-c" switch), or read with the "read_config" command, may contain a statement to read a LEF file, that is equivalent to doing read_lef.
read_lef is implemented as a built-in command in qrouter, but also available as a keyword in the configuration file, having the same syntax.
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Last updated: November 17, 2013 at 9:29pm