Data exchange system and operating mode self-negotiation method thereof

A technology of data exchange and working mode, applied in the direction of data exchange network, digital transmission system, selection device of multiplexing system, etc., can solve problems such as high price

Active Publication Date: 2012-07-18
RUIJIE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, QSFP+ optical modules or CFP optical modules that support PMD sublayer single-mode fiber interfaces are expensive and limited to short-distance transmission

Method used

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  • Data exchange system and operating mode self-negotiation method thereof
  • Data exchange system and operating mode self-negotiation method thereof
  • Data exchange system and operating mode self-negotiation method thereof

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Embodiment approach

[0018] The switch chip 1 is a chip that implements the MAC and MAC control sublayer functions defined by 802.3. In the embodiment of the present invention, it is used to realize the data exchange function. The switch chip 1 is connected to the physical coding sublayer of the physical layer chip 2 through an N-channel interface. In an implementation manner, N=4, then the switch chip 1 includes at least one 40G control core, and the control core can support one 40G module form or four 10G module forms. When the control core works in the form of one 40G module, its external interface is a 40G XLAUI interface output; when the control core works in the form of 4 10G modules, its external interface is 4 XFI interface outputs. The 40G XLAUI interface and the 4 10G XFI interfaces physically share 4 pairs of lanes (lane). In another implementation manner, N=10, the switch chip 1 includes at least one 100G control core, and the control core can support one 100G module form or ten 10G m...

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Abstract

The invention provides a data exchange system and an operating mode self-negotiation method thereof. The system comprises an exchange chip, a physical layer chip, a central processing unit (CPU) and N small form-factor pluggable (SFP+) optical modules, wherein the exchange chip is connected with a physical coding sublayer of the physical layer chip through N lane interfaces, so that the physical coding sublayer is operated in an (N*10) G mode; a physical medium dependent sublayer of the physical layer chip is operated in a 10G SFP+ mode, and the N SFP+ optical modules are respectively connected with the physical medium dependent sublayer of the physical layer chip through N SERDES framer interfaces (SFIs); and the CPU is connected with the N SFP+ optical modules through an inter-integrated circuit (I2C) interface and connected with the exchange chip through a peripheral component interconnect express (PCIE) interface, wherein N is a positive integer more than or equal to one. By the technical scheme provided by the invention, a transceiver module can support transmission of long distance (more than forty kilometers).

Description

Technical field [0001] The present invention relates to high-speed interface technology, in particular to a data exchange system and an auto-negotiation method of its working mode. Background technique [0002] In general, a data exchange system may include a media access control (Media Access Control, referred to as: MAC) chip (also referred to as a switch chip), a physical layer (Physical, referred to as: PHY) chip, a transceiver module, and a central processing unit ( Central Processing Unit, referred to as: CPU). Among them, the data link layer of the Ethernet can include the MAC sublayer and the logical link control (Logical Link Control, referred to as LLC) sublayer, and the MAC chip must not only implement the functions of the MAC sublayer and the LLC sublayer, but also Provide a Peripheral Component Interconnect (Peripheral Component Interconnect, referred to as: PCI) interface that meets the specification to realize data exchange with the host. One end of the MAC chip ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04B10/08H04L12/56
Inventor 李明纬陈武
Owner RUIJIE NETWORKS CO LTD
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