What is IrDA Data?
A standard developed by the Infrared Data Association (IrDA) in 1994 for two-way point-to-point communication over IR light at speeds of up to 4 Mbps. IrDA Data is used for communication between palm computers, digital cameras, cellular phones, and other devices. It is implemented using a suite of protocols, including the ones listed.
- IrDA Data PHY (physical layer), which provides low-level continuous bidirectional error-correcting operation from 9600 bps up to 4 Mbps over distances of at least 1 meter. Specifically, asynchronous serial transmission is supported between 9600 bps and 115.2 Kbps, synchronous serial transmission at 1.152 Mbps, and synchronous communication at 4 Mbps.
- IrDA Data Infrared Link Access Protocol (IrLAP), a serial link protocol adapted by the IrDA for infrared serial communication from the High-level Data Link Control (HDLC) protocol. IrLAP provides a single serial connection between two IrDA devices and manages the device-to-device discovery, connection, and reliable data transfer functions.
- IrDA Data Infrared Link Management Protocol (IrLMP), which is used for link control and multiplexing of IrDA devices. IrLMP allows multiple IrDA devices to communicate over a single infrared link and provides for protocol and service discovery through the Information Access Service (IAS).
In addition to the three mandatory IrDA Data protocols described, a number of optional protocols are available that support flow control, port emulation, object exchange services, image exchange, interfacing with telephony devices, and infrared wireless access to local area networks (LANs).