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A SGPIO signal buffering circuit

A signal buffering and buffering circuit technology, applied in electrical digital data processing, instruments, etc., can solve problems such as ringing and overshoot, and achieve the effect of improving quality

Inactive Publication Date: 2019-01-04
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention discloses a SGPIO signal buffer circuit, which solves the problem of overshoot or ringing in the SGPIO signal transmission process existing in the prior art

Method used

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  • A SGPIO signal buffering circuit
  • A SGPIO signal buffering circuit
  • A SGPIO signal buffering circuit

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] refer to figure 1 , which shows a schematic structural diagram of a SGPIO signal buffer circuit provided by an embodiment of the present invention. In this embodiment, the circuit includes:

[0032] The driving end 100, the receiving end 200, the first buffer module 300, and the second buffer module 400;

[0033] Wherein, the driving end 100 is connected to the receiving end 200 through a transmission line;

[0034] The first buffer module 300 is conn...

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Abstract

The invention discloses an SGPIO signal buffering circuit, which comprises a driving end, a receiving end, a first buffering module and a second buffering module in a circuit for transmitting the SGPIO signal. The driving end is connected with the receiving end through a transmission line; the first buffer module is connected with the driving end, and the second buffer module is connected with thereceiving end; the first buffer module and the second buffer module are used for eliminating overshoot and ringing during SGPIO signal transmission. The circuit in the embodiment ensures that the output impedance of the driving end is the same as the impedance of the transmission path in the transmission process of the SGPIO signal, thereby eliminating overshoot or ringing in the transmission ofthe SGPIO signal and improving the quality of the SGPIO signal.

Description

technical field [0001] The invention relates to the field of circuit design, in particular to an SGPIO signal buffer circuit. Background technique [0002] SGPIO (Serial General Purpose Input / output) is used for communication between the SAS / SATA control card HBA and the hard disk backplane. The HBA obtains the status of the hard disk socket on the backplane through SGPIO and sends out hard disk LED status indication signals. [0003] When the SGPIO signal is transmitted on the SAS backplane, when the signal is transmitted from the driving end to the receiving end through PCB traces, connectors, and signal cables, because the output impedance of the driving end does not match the impedance of the transmission path, the impedance is felt during signal transmission. Reflections will occur when changing, and multiple reflections will cause overshoot or ringing. Contents of the invention [0004] In view of this, the present invention discloses an SGPIO signal buffer circuit,...

Claims

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Application Information

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IPC IPC(8): G06F13/12
CPCG06F13/126
Inventor 付水论
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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