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Is there a way for SCIx.TE and SCIx.RE set to 1 to return to 0?

Latest Updated:06/10/2013

Question:

Once SCIx.TE and SCIx.RE are set to 1, they can't return to 0. Is there any processing required in order to return to 0?

Answer:

After either the TE or RE bit is set to 1, the only values that can be written are TE bit = 0 and RE bit = 0, written simultaneously. When the SMR.CM bit is 0 and the IICM bit of SIMR1 is 0, writing can be performed in any order.

Therefore, TE and RE cannot be cleared to 0 unless 0 is set to both simultaneously.

Suitable Products
RX630
RX63N, RX631
RX63T
RX210
RX220
RX110
RX111