IEEE P1687内部JTAG(IJTAG)标准使得嵌入式测试不再像过去那样局限于特定的芯片将测试和测量仪器嵌入到芯片中并不是什么新技术,它已经出现了很多年。其新意在于如何使这些仪器超越其最初的、有局限性的,只面向特定芯片的用途,并用于解决在电路板和系统级验证、测试和调试中看似无法解决的困难。最近兴起的IEEE P1687内部JTAG(IJTAG)标准将有助于实现从基于用 It has been around for many years that the IEEE P1687 internal JTAG (IJTAG) standard makes embedded testing no longer confined to a particular chip as it was in the past, embedding test and measurement instrumentation into the chip and not a new technology. The new idea is how to make these instruments go beyond their original, limited, silicon-only use and to address seemingly insurmountable problems at board and system-level verification, testing and debugging. The recent rise of the IEEE P1687 internal JTAG (IJTAG) standard will help to achieve standards-based