新的IEEE标准-非活动撤销。 本标准规定了可用于将不同设计团队或供应商的模块集成到可测试和可维护子系统中的串行、背板、测试和维护总线（MTM总线）。指定了物理层、链接层和命令层。标准接口协议和命令可用于提供模块所需的基本测试和维护功能，以及对模块内资产（内存、外围设备等）和IEEE Std 1149.1边界扫描的访问。标准命令和功能支持对单个模块进行故障隔离，并测试模块之间的背板互连。

New IEEE Standard - Inactive-Withdrawn. This Standard specifies a serial, backplane, test and maintenance bus (MTM-Bus) that can be used to integrate modules from different design teams or vendors into testable and maintainable subsystems. Physical, link, and command layers are specified. Standard interface protocol and commands can be used to provide the basic test and maintenance features needed for a module as well as access to on-module assets (memory, peripherals, etc.) and IEEE Std 1149.1 boundary-scan. Standard commands and functions support fault isolation to individual modules and test of backplane interconnect between modules.