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如何理解DM8148的邮箱中断请求

LX M
Intellectual 552 points


您好。我在看DM8148的手册《TMS320DM814x DaVinci.pdf》。其中1.9.3.4 Interrupt Requeests讲解了邮箱中断请求：

中断请求允许邮箱用户在接收消息或消息队列未满时得到通知，每个用户有一个中断。

这里中断请求允许邮箱用户在接收消息或消息队列未满时得到通知的得到通知要如何理解？每个用户有一个中断，即每个处理器有一个对应的邮箱中断信号，这一个邮箱中断信号是如何与这2个事件（接收消息或消息队列未满）对应的？

上面的这个表要如何理解，这个表完全没有看懂，比如为什么这个表有3行，每行代表的是什么？每列代表的是什么？

  • 0
    Guru 22552 points
    The device Mailbox module facilitates communication between the ARM Cortex-A8, C674x DSP, and the Media Controller. It consists of twelve mailboxes, each supporting communication between two of the above processors. The sender sends information to the receiver by writing a message to the mailbox registers. Interrupt signaling is used to notify the receiver that a message has been queued or to notify the sender about an overflow situation.