Mitsubishi Electric M32R Series User Manual page 599

Mitsubishi 32-bit risc single-chip microcomputers

Table of Contents

Note : When you selected f(BCLK) for the BRG count source (CDVI), you are subject to limitations that

the baud rate register value you set must be equal to or greater than 7.

Figure 12.6.3 Procedure for UART Transmit Initialization

Initial settings for UART

transmission

Set SIO Transmit/Receive Mode Register

Set SIO Transmit Control Register

Set SIO Baud Rate Register

Set SIO Interrupt Related Registers

Set the Interrupt Controller

Set DMAC related registers

Set input/output port

Operation Mode Register

Initial settings for UART

transmission finished

12.6 Transmit Operation in UART Mode

• Set register to UART mode

• Set parity (when enabled,

• Set stop bit length

• Set character length

• Select clock divider's divide-by ratio

• Divide-by ratio H'00 to H'FF (Note)

• Enable/disable transmit interrupt

(When using interrupt)

(When using DMAC)

select odd/even)