Data transmission apparatus and method for supporting multi-channel data transmission

Abstract

A data transmission device which supports the multi-channel data transmission comprises a multi-channel interface which proceeds the data transmission between the sending equipment and the receiving equipment, a sending side sustained storage, a receiving side sustained storage and a sending unit. The sending equipment and the multi-channel interface are connected with the sending side sustained storage, which puts the output data from the sending equipment into the sending side sustained storage according to the channel and sends the data in the sending side sustained storage to the multi-channel interface according to the flow control dispatching information of each channel. The receiving unit is connected with the multi-channel interface, the receiving side sustained storage and the receiving equipment, which puts the output data from the multi-channel interface into the receiving side sustained storage to wait to be transmitted into the receiving equipment and produces the corresponding flow control information based on the sustained storage data capacity of each channel in the receiving side sustained storage. The present invention also comprises the corresponding method of the data transmission of the data transmission device. By using the out sustained storage the present invention efficiently extendeds the quantity of the channel which is supported by the multi-channel interface such as the SPI4.2 and avoids the phenomena of the team joint block.

Description

technical field [0001] The present invention relates to network communication, and in particular to data transmission between communication devices; more specifically, the present invention relates to flow control technology and data transmission technology enabling multi-channel data transmission between communication devices through external cache. Background technique [0002] SPI (System Packet Interface, System Packet Interface) is a point-to-point interface standard for interconnecting physical layer (Physical layer, PHY) devices and link layer (Link layer, LINK) devices developed by OIF (Optical Internetworking Forum, Optical Internet Forum). For different application environments, the SPI corresponds to multiple different versions, and currently the most widely used are SPI3 (SPI Level 3) and SPI4.2 (SPI Level 4 Phase 2); where the signal frequency of SPI3 is 2.5 Gbps, while SPI4.2 corresponds to a data transfer rate of 10Gbps. More specifically, SPI4.2 can be used ...

AI Technical Summary

Problems solved by technology

In this design mode, when the data channel corresponding to a certain logical channel is blocked so that it cannot read data from the shared FIFO buffer, other logical channels that share the FIFO buffer with it will not be able to read data from the shared FIFO buffer. The data is read from the FIFO buffer, that is, the queue head is blocked

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