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As shown in the Fig, each input level unit is composed of five parts.FIFO,DEMUX,RRARbiter FIFO, MUX. The first part is FIFO, this part is used to store the transmitted data in a burst to avoid the loss or invalidity of transmitted data; the second part is the data distributors(demux) connected to the input ports,through which the input data is sent to the corresponding FIFOs; the third part is the rrarbiters connecting between data distributor and FIFO, which is used to avoid the data collision conflict; the fourth part is FIFO corresponding to the output level unit; the fifth part is the mux connected to the output port of FIFO and the output interface of the input level unit,respectively. |