DFT Expert: designing testable VLSI circuits

A set of expert-system modules for designing easily testable VLSI circuits called DFT Expert is described. DFT Expert operates at the register-transfer level of circuit description, classifying circuit components into data transporters (DTs) and data processors (DPs). It identifies DPs and DTs, selects a test method, configures global design for test (DFT), and generates test schedules. DFT Expert's ability to test a practical circuit is demonstrated.>