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A method of deframing in jesd204b protocol

A technology for deframing and protocol, which is applied in the field of high-speed serial interface chips, and can solve problems such as inability to deframe

Active Publication Date: 2019-08-27
重庆湃芯创智微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, there is no unified standard for the deframing part of the JESD204B transport layer in China, so it is impossible to effectively deframe in JESD204B

Method used

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  • A method of deframing in jesd204b protocol
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  • A method of deframing in jesd204b protocol

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Embodiment Construction

[0036] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] see figure 1 , the embodiment of the present application provides a method for deframing in the JESD204B protocol, the method comprising:

[0038] S1: Determine the output data bit width after deframing according to the pre-input parameter value;

[0039] S2: According to the predetermined number of bytes in each frame, determine the form of data extracted from each channel;

[0040] S3: sort the word data or byte data of each channel based on the judgment result, and obtain the sorted word data;

[0041] S4: Restore the sorted word data to the sample data of each converter;

[0042] S5: Combine the sample data of each converter according to the data bit width, and output the combined data.

[0043] In this embodiment, the data bit width output after deframing is determined according to the following formula:

[0044]

[0045...

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Abstract

The invention relates to a frame decoding method in a JESD204B protocol. The method comprises the following steps that: according to a pre-input parameter, determining data bit width output after frame decoding is carried out; according to pre-determined octets in each frame, judging a form for extracting data from each channel, i.e., extracting the data according to a byte form or a character form; on the basis of a judgment result, carrying out extraction and sorting processing on the character data or the byte data of each channel to obtain the character data subjected to the sorting processing; reducing the character data subjected to the sorting processing into the sample data of each converter; and according to the data bit width, combining the sample data of each converter, and outputting the combined data. By use of the frame decoding method in theJESD204B protocol, a frame decoding process can be realized according to the requirements of the JESD204B protocol.

Description

technical field [0001] The invention belongs to the technical field of high-speed serial interface chips, and relates to a method for deframing in the JESD204B protocol. Background technique [0002] JESD204B is an interface for high-speed data acquisition. This standard provides a method for interfacing one or more data converters with digital signal processing devices. It is currently mainly used in the connection between ADCs and FPGAs. This is a higher speed serial interface than usual parallel data transfer. It is capable of speeds up to 12.5Gbps / lane and uses a frame serial data link with embedded clock and alignment characters to reduce the number of traces between devices, reduce trace matching requirements, and eliminate setup and hold timing constraints problem, thereby simplifying the implementation of the high-speed converter data interface. [0003] A JESD204B system mainly includes: data transmission part (TX), high-speed serial part (PHY), data reception par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/42
Inventor 唐枋殷鹏李世平陈卓夏迎军王忠杰黄莎琳李明东舒洲叶楷李紫晴杨通贝兰峰
Owner 重庆湃芯创智微电子有限公司