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A method and system for multiplexing multiple channels of smii signals to one channel of mii signals

A signal, one-way technology, applied in the multiplexing method and system field of multiple SMII signals to one MII signal, can solve the problems of resource waste and achieve the effect of powerful function, strong portability and simple structure

Active Publication Date: 2018-08-21
上海航天智能装备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Under the existing technical conditions, only the serial-to-parallel conversion of one SMII signal to one MII signal has been realized, but in various applications such as SDH, it is necessary to realize the conversion between multiple SMII signals and MII signals, and it is technically necessary to repeatedly use one Serial-to-parallel conversion of SMII signal to one MII signal, resulting in a lot of waste of resources

Method used

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  • A method and system for multiplexing multiple channels of smii signals to one channel of mii signals
  • A method and system for multiplexing multiple channels of smii signals to one channel of mii signals
  • A method and system for multiplexing multiple channels of smii signals to one channel of mii signals

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Embodiment

[0050] A method for multiplexing multiplexed SMII signals to one MII signal, comprising the following steps:

[0051] 1) The FPGA receives multiple channels of SMII signals, converts them into parallel signals through a serial-to-parallel converter in each channel, and writes them into the two buffers of the receiving and processing module;

[0052] The signal receiving part is composed of multiple receiving processing modules, and each receiving processing module allocates two receiving buffers. When one buffer is occupied by sending data, another buffer can be used to receive data. The data received by each SMII interface must be buffered in units of Ethernet frames, and each buffer can buffer at least two IP frames. The length of the IP frame varies with the protocol used. The length of IPv4 is 32 bits, and the length of IPv6 is 128. bit. The two receive buffers on each SMII interface have two control rights. When the buffer is empty, it is controlled by SMII, and SMII can...

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Abstract

The present invention relates to a multiplexing method for converting a multi-path SMII signal to a one-path MII signal. The method comprises the following steps: 1) an FPGA receives a multi-path SMII signal, converts the multi-path SMII signal into a parallel signal in each path by means of a serial-to-parallel converter, and writes the parallel signal into two buffers of a receiving process module; 2) the FPGA reads the parallel signal in the buffer of the receiving process module in each path; and 3) sending the parallel signal that is read in each path by means of a logic sending circuit of an MII signal interface. Compared with the prior art, the method and system provided by the present invention have the advantages of powerful functions, wide applicability and strong portability and the like.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and system for multiplexing multiple channels of SMII signals to one channel of MII signals. Background technique [0002] MII, or Media Independent Interface, is an Ethernet industry standard defined by IEEE-802.3, which is used to connect FastEthernetMAC-block with various types of PHYs. It includes a data interface, and a management interface between the MAC and the PHY. The data interface includes two independent channels for the transmitter and receiver respectively. Each channel has its own data, clock and control signals. The management interface is a dual-signal interface, one is a clock signal and the other is a data signal. Through the management interface, the upper layer can monitor and control the PHY. [0003] SMII is a media interface proposed by Cisco. It has fewer signal lines than RMII, and S means serial. Because it only uses one signal line to transmit and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/38
Inventor 许小青廖超
Owner 上海航天智能装备有限公司
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