Method and apparatus for checking asynchronous HDL circuit desig

Details Method and apparatus for checking asynchronous HDL circuit desig Method and apparatus for checking asynchronous HDL circuit desig

1997-10-02

2000-08-08

Lintz, Paul R.

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

716 5, 716 18, G06F 1750

Patent

active

060995793

ABSTRACT:
A tool is provided that automates and expedites the ASIC design review process by allowing designers to perform a comprehensive asynchronous path design review of the circuit design HDL code. The tool operates on either an entire hierarchy or any sub-block of the circuit design. Filters are provided to allow the user to disregard known and desired synchronization circuits from the output generated by the tool. The tool provides an output that can take either of two formats, i.e. the output may be presented in a tabular form by hierarchical signal name, or it may be presented in a graphical, schematic block diagram form. In operation, the tool performs an exhaustive search of all circuits and identifies any asynchronous behavior. A user interface is provided that requires two data inputs and provides for an additional optional field. The two mandatory fields identify the location of all design files and the module at which the tool should begin its analysis. The tool begins its analysis at the level of the module input and traverses the circuit design from that point down the hierarchy to all end modules. Additional options and inputs govern the type and format of output information generated.

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