Single-ended signaling between differential ethernet interfaces

An Ethernet and differential technology, applied in broadband local area networks, transmission line coupling devices, transmission systems, etc., can solve problems such as expensive, unfeasible, and bulky cables

Active Publication Date: 2021-04-13
CREDO TECH GRP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cables with 64 or more electrical conductors become unfeasibly bulky,

Method used

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  • Single-ended signaling between differential ethernet interfaces
  • Single-ended signaling between differential ethernet interfaces
  • Single-ended signaling between differential ethernet interfaces

Examples

Experimental program
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Embodiment Construction

[0016] While specific embodiments are shown in the drawings and the following description, please keep in mind that they do not limit the disclosure. On the contrary, they provide a basis for those skilled in the art to discern alternatives, equivalents and modifications included within the scope of the appended claims.

[0017] figure 1 is a perspective view of an illustrative cable that can be used to provide high-bandwidth communication links between devices in routed networks, such as those used in data centers, server farms, and interconnect switches. The routed network may be part of, for example, the Internet, a wide area network, or a local area network, or may include, for example, the Internet, a wide area network, or a local area network. The linked devices can be computers, switches, routers, and so on. The cable comprises a first connector 100 and a second connector 101 connected via electrical conductors 106 in the cord. The electrical conductors 106 may be sh...

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PUM

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Abstract

Mass-manufactured cables suitable for large communication centers may convert from differential PAM4 interface signaling to parallel single-ended NRZ transit signaling at 53.125 GBd to provide bidirectional data rates up to 800 Gbps and beyond. One illustrative cable embodiment includes: electrical conductors connected between a first connector and a second connector, each adapted to fit into an Ethernet port of a corresponding host device to receive an electrical input signal to the cable conveying an outbound data stream from the host device and to provide an electrical output signal from the cable conveying an inbound data stream to that host device. The electrical input and output signals employ differential PAM4 modulation to convey the inbound and outbound data streams. Each of the first and second connectors includes transceivers to perform clock and data recovery on the electrical input signal to extract and re-modulate the outbound data stream for transit via the electrical conductors as respective pairs of electrical transit signals employing single-ended NRZ modulation.

Description

Background technique [0001] Those of ordinary skill in the art to which this application pertains will be familiar to those of ordinary skill in the art to which the Institute of Electrical and Electronics Engineers (IEEE) Standards Association publishes an IEEE standard for Ethernet, IEEE Standard 802.3-2015. The Ethernet standard provides local area network (LAN) operation at selected speeds from 1Mb / s to 100Gb / s over coaxial cables, twinaxial cables, twisted pair cables, fiber optic cables, and electronic backplanes in various channel signal constellations Provides common media access control specifications. The standard is being extended as the demand for higher data rates continues. Even if equalizers are forced to operate at faster symbol rates, this extension to the standard must account for increased channel attenuation and dispersion. As proposed per-lane bit rates rise beyond 50Gbps utilizing PAM4 or larger signaling constellations, it becomes increasingly difficul...

Claims

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Application Information

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IPC IPC(8): H04B3/46H04L25/02
CPCH04B3/46H04L25/028H04L25/0292H04L25/03885H04L25/4917H04L25/03146H04L25/0272H04L12/2801
Inventor L·C·F·程R·帕伊
Owner CREDO TECH GRP LTD
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