Taking into Account Asynchronous Signals in Functional Test of Complex Circuits

The proposed functional test method for complex circuits presents the following features: the test problem is studied in the aggregate; a test method, a test environment and automated test program generation are proposed; the circuit behavior is considered as a whole, including the response to instructions (or commands), and to signals at the same level. Emphasis is put on the signal test; an hardware which allows the test of signals and is compatible with functional testing is defined; a description language for signal timing diagrams is proposed.