| 摘要 |
Multichannel processor for processing data of multi-protocol data packets, comprising (a) a number of input ports (2) for receiving received data packets in parallel, which can be selected in each case by means of an input port number; (b) at least one multiplexer (3) connected to the input ports (2), which switches through the data present at the selected input port word by word; (c) at least one first programmable data processing unit (4), which separates the sequence of data words switched through by the multiplexer (3) into data packet header words and into data packet payload words in accordance with a sorting program selected in accordance with the input port number; (d) a buffer management unit (44) which writes the data packet payload words of a received data packet into an addressable payload memory (47) and generates localization data which specify the corresponding memory area; (e) a descriptor generator unit (43) for generating data packet descriptors which in each case contain a header assembled from the data packet header words and the localization data for the associated payload of the received data packet; (f) an RISC processor (46) which generates, in dependence on the data packet descriptors, header data for the transmit data packets and payload processing instructions for processing data of the data packet payload words, stored in the payload memory (47), of the associated received data packet; (g) at least one second programmable data processing unit (50), which processes the payload words, read out of the payload memory (47) by the buffer management unit (44), in accordance with the payload processing instruction and assembles them with the header data, generated by RISC processes, to form transmit data packets; (h) at least one demultiplexer which switches the transmit data packets through to an output port selected by means of an output port number, and comprising (i) a number of output ports (83) for outputting the transmit data packets in parallel. |
