Rick Regan <rdrdr2k@YAHOO.COM> wrote:
> I understand the meanings of the flags but my question still remains.
> Can you give an example where testing TRMT allows you to do something
> that just testing TXIF exclusively couldn't do?

If you're using a physical interface that requires a separate
transmit-enable signal (like RS-485), you need to know when the last byte
has been completely transmitted before you turn off the driver.

-- Dave Tweed

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