High-speed serial-to-parallel conversion circuit with frame alignment function

Abstract

The invention relates to a high-speed serial-to-parallel conversion circuit with a frame alignment function, which can realize the conversion from high-speed serial data to parallel data. A circuit main body comprises three modules that are a clock management module, a serial data sampling and deserializing module and a frame alignment module, wherein the clock management module can generate clocks with various phases and is applied to the serial data sampling and deserializing module and the frame alignment module; the serial data sampling and deserializing module is used to sample the serial data, perform simultaneous sampling for rising and falling edges by adopting the clocks output by the clock management module, and perform framing to form the parallel data by adopting a shift register; and the frame alignment module is used to perform frame alignment for the parallel data of the previous level, compare the sent data and the framed parallel data, and perform shifting and reconstitution for the parallel data based on a comparison result to ensure the accuracy of the final parallel output. The high-speed serial-to-parallel conversion circuit disclosed by the invention is simple in structure, flexible to use and high in reliability, and ensures that the requirements of serial-to-parallel conversion in high-speed serial communication systems can be met.

Description

technical field [0001] The invention relates to a high-speed serial-to-parallel conversion circuit with a frame alignment function, belonging to the technical field of high-speed serial communication systems. Background technique [0002] With the continuous improvement of integrated circuit performance and the rapid development of communication technology, the amount of data communication and exchange is increasing, and the data communication scheme in the actual system is becoming more and more complicated. The characteristics of the transmission rate stand out, and the wide application of serial communication makes the high-speed serial-to-parallel conversion circuit an indispensable part of the communication system. [0003] At present, there is a scheme of using digital phase modulation circuit to realize serial-to-parallel conversion, but the dedicated digital phase modulation chip is not flexible enough, the cost of programmable digital phase modulation chip is too hi...

AI Technical Summary

Problems solved by technology

[0004] In the invention patent with the application number 201510727717.0, a serial-to-parallel conversion circuit based on clock phase modulation has no frame alignment structure. If the data network and clock network are not well done, the framing after sampling is prone to misalignment, resulting in the final output of parallel data An error occurred

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