A modem is implemented using a host processor or DSP and has execution code for implementing respective receive and transmit functionality which execute without any branching. Coordination of receive and transmit functionality is achieved using state indications in a common data area. Operation without...http://www.google.de/patents/US6557061?utm_source=gb-gplus-sharePatent US6557061 - Modem instructions sequentially alternating executions between sending a predetermined number of symbols by a transmit sequencer and receiving by a receive sequencer
