Fujitsu FR60 Hardware Manual page 424

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CHAPTER 14 UART, SERIAL I/O INTERFACE (SIO), INPUT CAPTURE MODULE, AND OUTPUT COMPARE

• Writing to the SODR register starts communication. Even for receive only, dummy send data must

be written to the SODR register.

• Set the communication mode while operation is stopped. Data send and received while the

operating mode is being set is unpredictable.

• Write to the DRCL register before starting DMA transfer due to an interrupt for the first time.

Mb91350a series