Multiple buffers for each channel, transmit and receive, are supported to allow more parallelism and queueing. The number of channel buffers is configurable to enable independent configuration of the transmit and receive channels to help deal with system jitter. A larger number of receive channel buffers can avoid data overruns. The number of channel buffers for the receive and transmit channels can be tuned by altering RX_BUFFER_COUNT and TX_BUFFER_COUNT.