| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for expanding a power shutdown area in an LSI and its program. SOLUTION: A power shutdown area expansion method includes: a first extraction process of extracting a latch circuit or an input port as a first node B from an input terminal A of a power shutdown area by trace, and extracting a latch circuit or an output port as a second node B' from an output terminal A' of a first isolation cell connected to the output terminal of a shutdown area by trace, with respect to a hardware description file in which circuit elements and net information are described; and a second extraction process of extracting a latch circuit or an output port as a third node C from the first node B by trace, and extracting a latch circuit or an input port as a fourth node C' from the second node B' by trace, with respect to a hardware description file in which circuit elements and net information are described. The method also includes a process of extracting a uselessly operating combinational circuit, and adding the circuit to the hardware description file and a power supply specification file, and moving an isolation cell. COPYRIGHT: (C)2012,JPO&INPIT |
