SCAN CHAIN IN A CUSTOM ELECTRONIC CIRCUIT DESIGN

摘要

The present invention relates to a scan chain and related cell design structures in a custom electronic circuit design with a plurality of storage elements. All scan inputs and all scan outputs of the storage elements are propagated to a top level of the design hierarchy in design. Each scan input and each scan output on the top level is declared a primary input and primary output, respectively. Propagating all the inputs and outputs of the storage elements to this level improves the wireability of the scan chain.