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How to generate a send empty interrupts from SCI?

Latest Updated:12/19/2013

Question:

I am not able to generate a send empty interrupt (TXI) from the serial communication interface (SCI). Interrupts are enabled.

Answer:

After enabling the transmit enable bit (TE), check whether the transmit interrupt enable bit (TIE) is disabled.
If it is disabled, enable the TIE bit before enabling the TE bit.
To enable/disable interrupts, use the interrupt request enable registers (IER) of the interrupt control unit (ICU).
Suitable Products
RX62N, RX621
RX62T
RX610
RX62G
RX630
RX63N, RX631
RX63T
RX210