HD6417705 Datasheet, PDF (477/739 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

Section 17 Infrared Data Association Module (IrDA)
This LSI has an on-chip Infrared Data Association (IrDA) interface that is based on the IrDA 1.0
system and can perform infrared communication.
The IrDA is an optional module used for modulation and demodulation of signals for the SCIF
module, and it must always be used together with the SCIF module.
17.1 Features
• Conforms to the IrDA 1.0 system
• Asynchronous serial communication
 Data length: 8 bits
 Stop bit length: 1 bit
 Parity bit: None
• On-chip 64-stage FIFO buffers for both transmit and receive operations
• On-chip baud rate generator with selectable bit rates
• Guard functions to protect the receiver during transmission
• Clock supply halted to reduce power consumption when not using the IrDA interface
Figure 17.1 shows a block diagram of the IrDA.
TxD
IrTx
Transfer clock
Modulation unit
SCIF
RxD
Demodulation unit
IrRx
IrDA
Switching IrDA/SCIF
Legend
SCIF: Serial communication interface with FIFO
Figure 17.1 Block Diagram of IrDA
IFIRDA0A_000020020100
Rev. 2.00, 09/03, page 431 of 690