So the design of boundary scan is essential in the design of chips. IEEE instituted a standard for it, and the standard is IEEE1149.1 (that can be called as JTAG standard also).

• 边界扫描设计已逐渐成为芯片设计中不可或缺的部分；IEEE为其制定了相关标准；即IEEE1149.；1标准(也称为JTAG 标准)。