IrCOMM

The IrCOMM deals with the connection of the IrDA protocol stack in existing computer systems . Both serial and parallel Centronics interfaces are supported .

Four different interfaces are supported:

1. 3-Wire-Raw : This minimal variant supports only one data channel and has no separate control channel. For flow control is IrLAP used. This interface can be used on both the serial and the parallel port. No data format is transmitted.
2. 3-Wire : This variant has its own control channel and can therefore use its own flow control via TinyTP. Therefore, several virtual connections are possible. This interface can be used on both the serial and the parallel port.
3. 9-Wire : This is the standard variant for emulating the serial interface. The flow control is done via TinyTP. A separate control line transmits information about the data format, further control data such as for own send and receive data, request to send, clear to send etc. are also transferred according to the standard for the serial interface.
4. Centronics: This is the standard variant for emulating the parallel interface. Centronics is an industry standard that has meanwhile become generally accepted for parallel interfaces.