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Printed circuit board link connection device and method, printed circuit board and equipment

A printed circuit board, link connection technology, applied in the direction of printed circuits, printed circuit components, printed circuits connected with non-printed electrical components, etc. and other problems to achieve the effect of reducing impedance discontinuity effects, signal integrity problems, and the number of vias

Active Publication Date: 2022-04-29
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this design method meets the design requirements of sata, because the signal needs to be changed twice, two vias are added in the link, which not only takes up more printed circuit board space, but also introduces additional impedance discontinuities. Impact on signal quality and increase design risk

Method used

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  • Printed circuit board link connection device and method, printed circuit board and equipment
  • Printed circuit board link connection device and method, printed circuit board and equipment
  • Printed circuit board link connection device and method, printed circuit board and equipment

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1 of the present invention proposes a printed circuit board link connection device. It is necessary to support the system topology of two configurations of M.2 connector and sata controller, and propose a design method of switching chip polarity inversion, avoiding the signal layer change between the switching chip and the storage controller link, and improving the space utilization of the board , while reducing the number of link vias, improving signal quality, and reducing system design risks.

[0034] The traditional design topology will introduce two vias in the sata link, and the SATA protocol does not support the signal polarity inversion of the differential signal positive pin and the differential signal negative pin of the active device, and this via cannot be eliminated. Embodiment 1 of the present invention relies on the passive characteristics of the switch chip, that is, the switch chip does not recognize the positive pin of the differential signa...

Embodiment 2

[0049] Based on the printed circuit board link connection device proposed in Embodiment 1 of the present invention, Embodiment 2 of the present invention also proposes a printed circuit board link connection method, such as Figure 5 It is a flowchart of a printed circuit board link connection method according to Embodiment 2 of the present invention.

[0050] In step S501, reverse the polarities of the first polarity pin and the second polarity pin of the common port of the switch chip and connect them to the corresponding polarity pins of the storage connector;

[0051] In step S502, the polarity of the first polarity pin and the second polarity pin of the first control pin of the switch chip are reversed and then connected to the corresponding storage controller of the storage connector;

[0052] In step S503, the polarity of the first polarity pin and the second polarity pin of the second control pin of the switch chip are reversed and then connected to the corresponding c...

Embodiment 3

[0058] Embodiment 1 of the basic invention proposes a printed circuit board link connection device, and embodiment 3 of the present invention proposes a printed circuit board. The printed circuit board includes a printed circuit board link connection arrangement.

[0059] Such as image 3 It is a schematic diagram of the M.2 connector link topology in Embodiment 1 of the present invention; the device includes a switching chip; the switching chip includes a public port, a first control port, and a second control port;

[0060] The common port includes a first polarity pin and a second polarity pin, and the polarity pins corresponding to the storage connector after inverting the polarity of the first polarity pin and the second polarity pin of the common port connected;

[0061] The first control port includes a first polarity pin and a second polarity pin, and after inverting the polarity of the first polarity pin and the second polarity pin of the first control port, the cor...

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PUM

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Abstract

The invention provides a printed circuit board link connection device and method, a printed circuit board and equipment. The device comprises a public port, a first control port and a second control port, each port comprises a first polarity pin and a second polarity pin, and the polarity of the first polarity pin and the polarity of the second polarity pin of the common port are reversed and then connected with the corresponding polarity pin of the storage connector; the polarity of the first polarity pin and the polarity of the second polarity pin of the first control port are reversed and then connected with the corresponding polarity pins of the storage controller; and the polarities of the first polarity pin and the second polarity pin of the second control port are reversed and then are connected with the corresponding polarity pins of the central processing unit. Based on the device, the invention also provides a link connection method, a printed circuit board and equipment. According to the method, correct interconnection between the central processing unit and the storage connector and between the storage controller and the storage connector is ensured, meanwhile, the number of via holes in a link is reduced, and the impedance discontinuous effect caused by the via holes is reduced.

Description

technical field [0001] The invention belongs to the technical field of printed circuit board design, and in particular relates to a printed circuit board link connection device, method, printed circuit board and equipment. Background technique [0002] In the design of domestic platform personal computers, the system configuration is becoming more and more diverse. For example, for the M.2 link, some customers need it to support PCIE configuration, and some customers need to support SATA configuration. In this case, the motherboard designer will add a Switch switch chip, that is, a switch chip. This switch chip has two input ports, and selects one output from these two input ports. The two input ports are PCIe signal and Sata signal respectively, and the motherboard design needs to select the corresponding channel according to the customer's needs. [0003] In order to realize the above functions, the mainstream design topology in the prior art is as follows figure 1 As sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/02H05K1/18H04L49/40H04L49/111
CPCH05K1/0245H05K1/025H05K1/184H04L49/30H04L49/40Y02D10/00
Inventor 荣世立李岩
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD