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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 bus signal asynchrony, achieve the effects of reducing debugging time, improving stability, and simplifying layout and wiring

Active Publication Date: 2012-06-06
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] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0028] Figure 4 Show the flow chart of the phase adjustment method for SPI4.2 bus line according to the embodiment of the present invention, comprise the following steps:

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

[0030] Step S20, the 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 the 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 interface, and device B only supports static phase adjustment.

[0033] This preferred embodiment adds a device that supports dynamic phase adjustment ...

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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 communication field, in particular to a phase adjustment method and device for SPI4.2 bus. Background technique [0002] SPI4.2 bus (System Packet Interface Level 4 Phase 2 BUS, System Packet Interface Level 4 Phase 2 BUS) is a bus standard formulated by OIF (Optical Internetworking Forum, Optical Internetworking Forum), applied in the data link layer and The bus interface between physical layers has a bandwidth of up to 10Gb / s. Applicable physical interfaces include OC-192ATM, Packet over SONET / SDH (POS), 10Gb / s Ethernet, etc. [0003] The system structure model of SPI4.2 bus is as follows figure 1 shown. From figure 1 As can be seen in the figure, the data channel and flow control channel for 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 a...

Claims

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Application Information

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