M30620FCAFP datasheet(373/615 Pages) RENESAS

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Clock-Synchronous Serial I/O

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-56

UARTi transmit/receive mode register

Symbol

Address

When reset

UiMR(i=0,1)

03A016, 03A816

0016

Bit name

Bit

symbol

Must be fixed to 001

0 0 0 : Serial I/O invalid

0 1 0 : Must not be set.

0 1 1 : Must not be set.

1 1 1 : Must not be set.

b2 b1 b0

CKDIR

SMD1

SMD0

Serial I/O mode select bit

SMD2

Internal/external clock

select bit

STPS

PRY

PRYE

SLEP

Parity enable bit

0 : Internal clock

1 : External clock (Note)

Stop bit length select bit

Odd/even parity select bit

Sleep select bit

0 : One stop bit

1 : Two stop bits

0 : Parity disabled

1 : Parity enabled

0 : Sleep mode deselected

1 : Sleep mode selected

1 0 0 : Transfer data 7 bits long

1 0 1 : Transfer data 8 bits long

1 1 0 : Transfer data 9 bits long

0 0 0 : Serial I/O invalid

0 1 0 : Must not be set.

0 1 1 : Must not be set.

1 1 1 : Must not be set.

b2 b1 b0

0 : Internal clock

1 : External clock (Note)

Invalid

Valid when bit 6 = “1”

0 : Odd parity

1 : Even parity

Invalid

Must always be “0”

Function

(During UART mode)

Function

(During clock synchronous

serial I/O mode)

UART2 transmit/receive mode register

Symbol

Address

When reset

U2MR

037816

0016

Bit name

Bit

symbol

Must be fixed to 001

0 0 0 : Serial I/O invalid

0 1 0 : (Note 1)

0 1 1 : Must not be set.

1 1 1 : Must not be set.

b2 b1 b0

CKDIR

SMD1

SMD0

Serial I/O mode select bit

SMD2

Internal/external clock

select bit

STPS

PRY

PRYE

IOPOL

Parity enable bit

0 : Internal clock

1 : External clock (Note 2)

Stop bit length select bit

Odd/even parity select bit

TxD, RxD I/O polarity

reverse bit

0 : One stop bit

1 : Two stop bits

0 : Parity disabled

1 : Parity enabled

0 : No reverse

1 : Reverse

Usually set to “0”

1 0 0 : Transfer data 7 bits long

1 0 1 : Transfer data 8 bits long

1 1 0 : Transfer data 9 bits long

0 0 0 : Serial I/O invalid

0 1 0 : Must not be set.

0 1 1 : Must not be set.

1 1 1 : Must not be set.

b2 b1 b0

Invalid

Valid when bit 6 = “1”

0 : Odd parity

1 : Even parity

Invalid

0 : No reverse

1 : Reverse

Usually set to “0”

Function

(During UART mode)

Function

(During clock synchronous

serial I/O mode)

Note 1: Bit 2 to bit 0 are set to “0102” when I2C mode is used.

Note 2: Set the corresponding port direction register to “0”.

Must always be “0”

Note : Set the corresponding port direction register to “0”.

Figure 2.4.3. Serial I/O-related registers (2)

M30620FCAFP Datasheet(PDF) 373 Page - Renesas Technology Corp

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