Method for inserting test points for full-and-partial-scan built-in self-testing

摘要

Test points (20, 24) placed at selected nodes (16) within a circuit (10) based on a cost function that accounts for (a) the global improvement in testability and (b) the penalty in circuit performance associated with propagation delays attributable to such test points. By accounting for both the global impact on testability and circuit performance degradation, the cost function maximizes fault coverage while achieving nearly minimal impairment of circuit performance.