Datasheet

Section 15 Serial Communication Interface (SCI, IrDA)

Rev. 3.00 Mar 17, 2006 page 664 of 926

REJ09B0283-0300

15.2 Input/Output Pins

Table 15.1 shows the pin configuration of the serial communication interface.

Table 15.1 Pin Configuration

Channel Pin Name

I/O Function

SCK0 I/O Channel 0 clock input/output

RxD0/IrRxD Input Channel 0 receive data input (normal/IrDA)

TxD0/IrTxD Output Channel 0 transmit data output (normal/IrDA)

SCK1 I/O Channel 1 clock input/output

RxD1 Input Channel 1 receive data input

TxD1 Output Channel 1 transmit data output

SCK2 I/O Channel 2 clock input/output

RxD2 Input Channel 2 receive data input

TxD2 Output Channel 2 transmit data output

Note: * Pin names SCK, RxD, and TxD are used in the text for all channels, omitting the

channel designation.

15.3 Register Descriptions

The SCI has the following registers. The serial mode register (SMR), serial status register (SSR),

and serial control register (SCR) are described separately for normal serial communication

interface mode and Smart Card interface mode because their bit functions partially differ.

• Receive shift register_0 (RSR_0)

• Transmit shift register_0 (TSR_0)

• Receive data register_0 (RDR_0)

• Transmit data register_0 (TDR_0)

• Serial mode register_0 (SMR_0)

• Serial control register_0 (SCR_0)

• Serial status register_0 (SSR_0)

• Smart card mode register_0 (SCMR_0)

• Bit rate register_0 (BRR_0)

• IrDA control register_0 (IrCR_0)

• Receive shift register_1 (RSR_1)

• Transmit shift register_1 (TSR_1)