M30620FCAFP datasheet(415/615 Pages) RENESAS

415 / 615 page

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-98

UART

Continued to the next page

Must always be “0” in UART mode

Setting UART2 transmit/receive mode register

UART2 transmit/receive mode register [Address 037816]

U2MR

Stop bit length select bit

0 : One stop bit

Odd/even parity select bit (Valid when bit 6 = “1”)

Must always be “1” (odd parity) in direct format

Parity enable bit

1 : Parity enabled

TXD, RXD I/O polarity reverse bit

Usually set to “0”

Serial I/O mode select bit

1 0 1 : Transfer data 8 bits long

b2 b1 b0

Setting UART2 transmit/receive control register 0

UART2 transmit/receive control register 0 [Address 037C16]

U2C0

Must always be “0” in UART mode

BRG count source select bit

0 0 : f1 is selected

0 1 : f8 is selected

1 0 : f32 is selected

1 1 : Must not be set

b1 b0

Valid when bit 4 = “0”

CTS/RTS disable bit

1 : CTS/RTS function disabled

Transmit register empty flag

0 : Data present in transmit register (during transmission)

1 : No data present in transmit register (transmission completed)

Transfer format select bit

Must always be “0” (LSB first) in direct format

Setting UART2 transmit/receive control register 1

UART2 transmit/receive control register 1 [Address 037D16]

U2C1

UART2 transmit interrupt cause select bit

1 : Transmission completed (TXEPT = 1)

Error signal output enable bit

1 : Output enabled

Must always be “0” in UART mode

Data logic select bit

Must always be “0” (no reverse) in direct format

Figure 2.5.18. Set-up procedure of reception in UART mode (used for SIM interface) (1)

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