IFIRDA0A_000020020100
Rev. 2.00, 09/03, page 431 of 690
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.
SCIF
TxD
Transfer clock
RxD
Switching IrDA/SCIF
IrDA
IrTx
IrRx
Modulation unit
Demodulation unit
Legend
SCIF: Serial communication interface with FIFO
Figure 17.1 Block Diagram of IrDA
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