H8SXSLASH1663R datasheet(979/1504 Pages) RENESAS

979 / 1504 page

Section 19 Serial Communication Interface (SCI, IrDA, CRC)

Rev. 2.00 Sep. 24, 2008 Page 947 of 1468

REJ09B0412-0200

19.8

IrDA Operation

If the IrDA function is enabled using the IrE bit in IrCR, the TxD5 and RxD5 pins in SCI_5 are

allowed to encode and decode the waveform based on the IrDA Specifications version 1.0

(function as the IrTxD and IrRxD pins)*. Connecting these pins to the infrared data transceiver

achieves infrared data communication based on the system defined by the IrDA Specifications

version 1.0.

In the system defined by the IrDA Specifications version 1.0, communication is started at a

transfer rate of 9600 bps, which can be modified later as required. Since the IrDA interface

provided by this LSI does not incorporate the capability of automatic modification of the transfer

rate, the transfer rate must be modified through programming.

Figure 19.36 is the IrDA block diagram.

Pulse encoder

Pulse decoder

IrCR

IrDA

SCI5

TxD

TxD5/IrTxD

RxD

RxD5/IrRxD

Figure 19.36 IrDA Block Diagram

Note: * The IrDA function should be used when the ABCS bit in SEMR_5 is set to 0 and the

ACS3 to ACS0 bits in SEMR_5 are set to B'0000.

H8SX/1663R 数据表(PDF) 979 Page - Renesas Technology Corp