High speed link control protocol transmission processing/module and data processing/method

This invention relates to HDLC protocol transmission process module including a port arbitration module, a HDLC protocol transmission processor and a state memory module. The data process method is that the port arbitration module receives data request signals of N ports and transfers them to the HDLC protocol processor orderly according to the priorities and provides arbitration to the shared data process pipelines of N ports, the HDLC processor reads out unprocessed data from FIFO and reads out the state data of its belonged HDLC channel from the state memory module be processed wit hpipelines to be sent to related ports to write back to the state memory the new state data of HDLC channel.