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PCIE Validation Methodology

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<strong>PCIE</strong> <strong>Validation</strong> <strong>Methodology</strong><br />

Functional Testing<br />

• The problem with functional testing is completeness – “Has<br />

sufficient testing been done?”<br />

• It is impossible to exhaustively test all behaviors and<br />

parameters.<br />

• There is always a possibility that some untried combination<br />

of parameters and sequences would reveal a new behavior<br />

that is unacceptable.<br />

• A two tiered approach is used here, where exhaustive tests<br />

are to be carried out in the functional block level by the sub<br />

block designers, but even this is not exhaustive.<br />

7

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