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INCREASE THE DATA THROUGHPUT OVER SFP CONNECTIONS PRESERVING ITS MECHANICAL STANDARDS

IP.com Disclosure Number: IPCOM000244314D
Publication Date: 2015-Dec-02
Document File: 3 page(s) / 198K

Publishing Venue

The IP.com Prior Art Database

Related People

Franco Tomada: AUTHOR [+3]

Abstract

Mechanisms and systems are provided to increase data throughput over a small form factor pluggable SFP connection The increase in the data throughput is achieved by reassigning four of twenty connector pins to support one additional data link which allows doubling the SFP bandwidth At the same time the mechanical form factor of the SPF connector is maintained

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 52% of the total text.

Page 01 of 3

INCREASE THE DATA THROUGHPUT OVER SFP+ CONNECTIONS PRESERVING ITS MECHANICAL STANDARDS

AUTHORS:

Franco Tomada
Luca Cafiero

Lin Shen

CISCO SYSTEMS, INC.

ABSTRACT

    Mechanisms and systems are provided to increase data throughput over a small form-factor pluggable (SFP+) connection. The increase in the data throughput is achieved by reassigning four of twenty connector pins to support one additional data link which allows doubling the SFP+ bandwidth. At the same time, the mechanical form factor of the SPF+ connector is maintained.

DETAILED DESCRIPTION

    SFP+ is a compact, hot-pluggable transceiver which is widely used for data telecommunications applications. SFP+ was originally specified and design for 1 Gbps links or 10 Gbps links. A configuration of a conventional SFP+ connector as specified in the SFF-8083 specification is illustrated in FIG. 1.

FIG. 1

Copyright 2015 Cisco Systems, Inc.

1


Page 02 of 3

    FIG. 1 is a general view of a right-angled body receptacle illustrating one example style of a receiving body. Various standards and related specifications for SFP connectors exist and each of these specifications has a mechanical dimensioning that provides backwards mechanical compatibility between generations of SFP connectors designed for various speeds.

    According to the mechanisms provided herein, in order to increase the data throughput or bandwidth over a SFP+ connection, an additional data link is provided by reassigning the function of some pads on an existing SFP transceiver electrical pad layout which will be explained in further detail in conjunction with FIG. 2.

FIG. 2

    FIG. 2 shows a new pin assignments for a SFP+ connector in accordance with the mechanisms described herein and standard pin assignments for pins the function of which has been reassigned.

    As shown in FIG. 2, the functions of pins 1-3 and 7 are reassigned. Pin 1 (which is used in the standard SFP+ connector as "transmitter ground" VeeT) is used to transmit data signal TD1-, pin 2 (which is used in...