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The development of wireless communications has occurred rapidly throughout the past decade. One of the standards used is the Infrared Data Association (IrDA) specification. The protocol introduced by this entity consists of three basic layers: IrPHY, IrLAP, and IrLMP, which supply a base for many other applications. This application report implements the IrDA Lite protocol (IrPHY, IrLAP, and IrLMP) on the MSP430, as well as Tiny Transfer Protocol (TTP) and IrCOMM 3-wire services as a passive, secondary-only device. IrPHY implementations are provided using a Timer_A-based approach as well as using the USCI_A hardware module.

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