Built-In Self-Testing of Micropipelines
نویسندگان
چکیده
Abstract The micropipeline approach offers a good engineering framework to design complex asynchronous VLSI circuits. An asynchronous ARM6 microprocessor (AMULET1), implemented using a two-phase signalling protocol, has proved the practical feasibility of the micropipeline design approach. A built-in self-test (BIST) micropipeline design based on an asynchronous BILBO register is presented in this paper. All the stage registers of the micropipeline are implemented using the proposed asynchronous BILBO register which can operate in four modes: normal operation, shift, linear feedback shift register (LFSR) and signature analyser mode. The test procedure described in this paper provides for the detection of all single stuck-at faults in the micropipeline. It is shown that delay faults in the combinational logic blocks of the BIST micropipeline can be tested by using BILBO registers of a doubled size.
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