BDMA comprises four phases of the system life cycle: build, deploy, manage, and audit.
BD ma包含系统生命周期的四个阶段：构建、部署、管理和审计。
The main role of BDMA is to transfer the data between external memory and internal peripherals like UART, IIS and SIO, which are attached to SPB.
BDMA的主要作用是用来在外部存储器与内部外设之间传送数据的，就像被连接到SPB上的UART、IIS和SIO一样。
The main role of BDMA is to transfer the data between external memory and internal peripherals like UART, IIS and SIO, which are attached to SPB.
BDMA的主要作用是用来在外部存储器与内部外设之间传送数据的，就像被连接到SPB上的UART、IIS和SIO一样。
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