M16C User Manual.pdf

SIM interfaceMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTERSetting UART2 transmit/receive mode registerb70 1 10 0 1b00 1UARTi transmit/receive mode register [Address 037816]U2MRSerial I/O mode select bitb2 b1 b01 0 1 : Transfer data 8 bits longMust be fixed to “0” in UART modeStop bit length select bit0 : One stop bitOdd/even parity select bit (Valid when bit 6 = “1”)Must be “1” (even parity) in direct formatParity enable bit1 : Parity enabledTXD, RXD I/O polarity reverse bitUsually set to “0”Setting UART2 transmit/receive control register 0b70 01b0UART2 transmit/receive control register 0 [Address 037C16]U2C0BRG count source select bitb1 b00 0 : f1 is selected0 1 : f8 is selected1 0 : f32 is selected1 1 : InhibitedValid when bit 4 = “0”Transmit register empty flag0 : Data present in transmit register (during transmission)1 : No data present in transmit register (transmission completed)CTS/RTS disable bit1 : CTS/RTS function disabledMust be fixed to “0” in UART modeTransfer format select bitMust be “0” (LSB first) in direct formatSetting UART2 transmit/receive control register 1b71 0 1b0UART2 transmit/receive control register 1 [Address 037D16]U2C1UART2 transmit interrupt cause select bit1 : Transmission completed (TXEPT = 1)Invalid in UART modeData logic select bitMust be “0” (no reverse) in direct formatError signal output enable bit1 : Output enabledContinued to the next pageFigure 2.5.15. Set-up procedure of transmission in UART mode (used for SIM interface) (1)368