Scope: IEEE Std 1500 is a scalable standard architecture for enabling test reuse and integration for embedded cores and associated circuitry. It foregoes addressing analog circuits and focuses on facilitating efficient test of digital aspects of systems on chip (SoCs). IEEE Std 1500 has serial and parallel test access mechanisms (TAMs) and a rich set of instructions
suitable for testing cores, SoC interconnect, and circuitry. In addition, IEEE Std 1500 defines features that enable core isolation and protection. IEEE Std 1500 will reduce test cost through improved automation, promote good design-for-test (DFT) technique, and improve test quality through improved access.