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Phase adjusting method and device for SPI4.2 bus

A phase adjustment and bus technology, applied in the field of communication, can solve problems such as asynchronous bus signals, reduce debugging time, ensure bus synchronization requirements, and improve stability.

Active Publication Date: 2010-02-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to provide a phase adjustment method and device for SPI4.2 bus to solve the problem in the prior art that the bus signal is not synchronized when the device does not support dynamic phase adjustment

Method used

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  • Phase adjusting method and device for SPI4.2 bus
  • Phase adjusting method and device for SPI4.2 bus
  • Phase adjusting method and device for SPI4.2 bus

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Embodiment Construction

[0027] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and the embodiments.

[0028] Figure 4 Shows a flowchart of a phase adjustment method for SPI4.2 bus according to an embodiment of the present invention, including the following steps:

[0029] Step S10, device C receives the SPI4.2 bus signal from device A;

[0030] Step S20: Device C performs dynamic phase adjustment on the SPI4.2 bus signal, and sends the SPI4.2 bus signal after the dynamic phase adjustment to device B;

[0031] In step S30, device B performs static phase adjustment on the received SPI4.2 bus signal after dynamic phase adjustment, and the distance between device B and device C is less than 5 cm.

[0032] Among them, device A, device B, and device C have SPI4.2 interfaces, and device B only supports static phase adjustment.

[0033] This preferred embodiment adds a device that supports dynamic phase adjustment before the device that does not have dynamic p...

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PUM

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Abstract

The invention provides a method for adjusting phase of SPI4.2, comprising that a component C receives a SPI4.2 bus signal from a component A; the component C performs dynamic phase adjustment on the SPI4.2 bus signal, and sends the SPI4.2 bus signal after dynamic phase adjustment to a component B; the component B performs static phase adjustment on the SPI4.2 bus signal, the distance between the component B and the component C is less than 5cm. the invention also provides a phase adjusting device for SPI4.2 bus. SPI4.2 bus can be arranged for a long distance on a PCB, especially suitable for condition of cross-connector arrangement, have strong suspension function to signal jitter and noise on the board, and guarantee bus synchronization requirement at a receiving end of the SPI4.2 bus.

Description

Technical field [0001] The present invention relates to the field of communication, and in particular, to a phase adjustment method and device for SPI4.2 bus. Background technique [0002] SPI4.2 bus (System Packet Interface Level 4Phase 2BUS, System Packet Interface Level 4Phase 2BUS) is a bus standard developed by OIF (Optical Internetworking Forum), which is used in the data link layer and the physical layer. Between the bus interface, its bandwidth can reach 10Gb / s. The applicable physical interfaces are OC-192ATM, Packet over SONET / SDH (POS), 10Gb / s Ethernet, etc. [0003] The system structure model of SPI4.2 bus is as figure 1 Shown. From figure 1 It can be seen that the data channel and flow control channel of receiving and sending are separated and reversed. The separation of the two channels makes receiving and sending independent of each other. Both channels are source synchronous bus interfaces. For data channels, such as figure 2 As shown, it is composed of a diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/12H04L29/06
Inventor 王振峰
Owner ZTE CORP