TEST APPARATUS AND ASYNCHRONOUS CIRCUIT FOR TESTABILITY

摘要

A test apparatus and an asynchronous circuit for testability. The test apparatus includes: a first input end (141), a second input end (142), a third input end (143), a fourth input end (144), a fifth input end (145), a first selector (110), a second selector (120), a D trigger (130) and a first output end (151), wherein first input ends of the first selector (110) and second selector (120) are connected to the first input end (141) of the test apparatus; a second input end of the first selector (110) is connected to the second input end (142) of the test apparatus; a selection signal end of the first selector (110) is connected to the fourth input end (144) of the test apparatus; an output end of the first selector (110) is connected to a D input end of the D trigger (130); a Q output end of the D trigger (130) is connected to a second input end of the second selector (120); a clock signal input end of the D trigger (130) is connected to the third input end (143) of the test apparatus; a selection signal end of the second selector (120) is connected to the fifth input end (145) of the test apparatus; and an output end of the second selector (120) is connected to the first output end (151) of the test apparatus. The test apparatus can be used for testing an asynchronous circuit.