M30620FCAFP datasheet(388/615 Pages) RENESAS

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Clock-Synchronous Serial I/O

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-71

Figure 2.4.15. Set-up procedure of reception in clock-synchronous serial I/O mode (2)

Writing dummy data

UART0 transmit buffer register [Address 03A316, 03A216] U0TB

UART1 transmit buffer register [Address 03AB16, 03AA16] U1TB

UART2 transmit buffer register [Address 037B16, 037A16] U2TB

Setting dummy data

b0 b7

(b15)

(b8)

Checking completion of reception

Receive complete flag

0 : No data present in receive buffer register

1 : Data present in receive buffer register

Start reception

Processing after reading out reception data

Continued from the previous page

Checking error

UART0 receive buffer register [Address 03A716, 03A616]U0RB

UART1 receive buffer register [Address 03AF16, 03AE16]U1RB

UART2 receive buffer register [Address 037F16, 037E16]U2RB

Overrun error flag

0 : No overrun error

1 : Overrun error found

b0 b7

(b15)

(b8)

Receive data

Reception enabled

Transmit enable bit

1 : Transmission enabled

Receive enable bit

1 : Reception enabled

UART0 transmit/receive control register 1

[Address 03A516] U0C1

UART1 transmit/receive control register 1

[Address 03AD16] U1C1

Transmit enable bit

1 : Transmission enabled

UART2 transmit/receive control register 1

[Address 037D16] U2C1

Receive enable bit

1 : Reception enabled

UART0 transmit/receive control register 1

[Address 03A516] U0C1

UART1 transmit/receive control register 1

[Address 03AD16] U1C1

UART2 transmit/receive control register 1

[Address 037D16] U2C1

Receive complete flag

0 : No data present in receive buffer register

1 : Data present in receive buffer register

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