When the PPE writes a data word to that address, the SPU can read from its corresponding mailbox read channels.
当PPE将一个数据字写入这个地址时，SPU就可以从对应的邮箱读通道中读取这个数据字的内容。
The SPU has a read channel for receiving a single data word from the mailbox and two write channels for sending data words (more on this below).
SPU有一个读通道来从邮箱接收单个数据字，有两个写通道来发送数据字(更详细的介绍请参看下文)。
As a result, a time-critical response during signal processing is limited just to the accumulator stage which is currently processing the data word.
因此，在信号处理期间对时间要求严格 的响应仅仅限于当前对数据字进行处理的累加器级。
As a result, a time-critical response during signal processing is limited just to the accumulator stage which is currently processing the data word.
因此，在信号处理期间对时间要求严格 的响应仅仅限于当前对数据字进行处理的累加器级。
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