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Is a TXI request generated when the TDFE is set from 0 to 1?

Latest Updated:03/25/2009

Question:

Is a transmit-FIFO-data-empty interrupt(TXI) request generated, when the transmit-FIFO-data-empty flag(TDFE) is set from "0" to "1"? Or Is the TXI request always generated, when the TDFE="1"?

Answer:

It is necessary to set the TIE bit of the serial control register(SCSCR) to "1" to enable the TXI request. At this time, the TXI request is generated, when the TDFE is set to "1".
Suitable Products
SH7618
SH7616
SH7615
SH7065