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Transmission set of multiplexing multiplepath interface in physical layer

A physical layer interface and transmission device technology, which is applied in the field of multiple physical layer interface multiplexing transmission devices, to reduce design difficulty and save logic resources

Active Publication Date: 2009-08-05
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] What the present invention aims to solve is the problem that the two-way XAUI transmission device must analyze the SPI4 protocol and perform link layer processing in the prior art

Method used

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  • Transmission set of multiplexing multiplepath interface in physical layer
  • Transmission set of multiplexing multiplepath interface in physical layer
  • Transmission set of multiplexing multiplepath interface in physical layer

Examples

Experimental program
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Embodiment Construction

[0048] In the prior art, the most important reason why the SPI4 signal cannot be directly transmitted through the XAUI interface is that the SPI4 signal and the XAUI signal have different bit widths and different clock frequencies. In the present invention, the method to solve this problem is to perform bit width matching and clock frequency matching.

[0049] In the following two embodiments, the transmission signal bit width input to the transmission device of the present invention is m, and the multiplexed physical layer interface includes a transmission interface unit and a reception interface unit, each having K paths, and the bit width of each path is n. The received signal output from the transmission device of the present invention is the same as the transmitted signal. The sending signal and the receiving signal may be one signal, or may include two or more signals, which is no different for the present invention.

[0050] The structure of Embodiment 1 of the multi-...

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Abstract

The invention discloses a multi-channel physical layer interface multiplexing transmission device, comprising K-channel sending unit interfaces and K-channel receiving unit interfaces with a bit width of n, a bit-width conversion unit, a distribution unit, a merging unit and a bit-width restoration unit, The bit width conversion unit converts the transmission signal with a bit width of m into a signal with a bit width of K*n, and transmits it to the distribution unit; the distribution unit sends the signals with a bit width of K*n respectively through the K-channel transmission unit interface; the merging unit Combine the signals received by the interfaces of the K receiving units into a signal with a bit width of K*n, and transmit it to the bit width restoration unit; the bit width restoration unit converts the signal with a bit width of K*n into a received signal with a bit width of m . The invention avoids parsing the physical layer protocol of the sent signal and two link layer processes in the transmission process, saves logic resources and reduces design difficulty.

Description

technical field [0001] The invention relates to high-speed signal transmission in communication and network systems, in particular to a multiplex transmission device for multiple physical layer interfaces of high-speed signals in communication and network systems. Background technique [0002] With the development of network technology, high-speed signal transmission is becoming more and more common in design. The currently used high-speed signal transmission interfaces include SPI4 (SPI Level 4) and XAUI (The Ten GigabitAttachment Unit Interface, 10 Gigabit Additional Unit Interface ) etc. [0003] SPI4 has been adopted as a standard by the Optical Internetworking Forum and is used as a transmission interface between physical layer devices and link layer devices. The SPI4 interface uses LVDS (Low-Voltage Differential Signaling, low-voltage differential level) as the input and output, with 16 data bits and 1 control bit in each direction for sending and receiving, and the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L29/08
Inventor 袁结全
Owner NEW H3C TECH CO LTD