Method/apparatus for flushing DMA transmit packet in FIFO when self-ID code generated by counter after bus reset is different than FIFO message self-ID field

DETAILED DESCRIPTION The present invention discloses a method and apparatus for processing a packet of data received from a direct memory access (DMA) engine.
In one embodiment, a counter generates a self-ID code and increments the self-ID code after a bus reset.
A formatter is coupled to the counter to format a start-of-packet (SOP) message which contains a self-ID field.
The SOP message corresponds to the packet and the self-ID field corresponds to the self-ID code.
A first-in-first-out (FIFO) is coupled to the formatter to store the SOP message and the packet.
A comparator is coupled to the FIFO to compare the self-ID field of the message read from the FIFO with the self-ID code.
A control circuit, which is coupled to the FIFO, flushes the packet if the self-ID field of the message is different than the self-ID code.