Behavioral synthesis for easy testability in data path allocation

The first behavioral synthesis scheme for improving testability in data path allocation independent of test strategy is presented. The authors propose two behavioral synthesis-for-test heuristics: improve observability and controllability of registers, and reduce sequential depth between registers. Also presented are algorithms that optimize a behavior-level design using these two criteria while minimizing area. Experimental results for benchmark circuits synthesized by the author´s experimental system. PHITS, show that these methods give a high fault coverage in small amounts of CPU time at a low area overhead