The IRM7001 SIR-Encoder/Decoder is a CMOS modulator/ demodulator chip that is used to both encode and decode information as per the IrDA SIR (Serial InfraRed) signal modulation and demodulation scheme. This chip is designed to work with Infineon IrDA compatible transceivers and all other IrDA compatible transceivers. The chip contains a clock divider circuit used to generate the 16X clock internally. This makes it very suitable for microcontroller-based embedded system design.