A Method of Realizing High-Speed Serial Communication Data Filtering
A communication data, high-speed serial technology, applied in the direction of electrical digital data processing, instruments, etc., can solve problems such as ignoring processing, achieve the effect of reducing interference, ensuring integrity and correctness, and synchronizing signal sequence stability
Active Publication Date: 2018-04-06
SHANGHAI SAIZHI INFORMATION TECH CO LTD
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[0009] Summarizing the above-mentioned generality, it can be concluded that the general synchronization detection methods ignore the processing of shorter valid data sequences with Comma
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[0039] In order to be able to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.
[0040] Innovative data filtering method based on the barrel water column calibration model:
[0041] This method is based on the basis of correct decoding of high-speed serial data. First, the data sequence is judged (valid or invalid). For valid data sequence and valid comma, both are considered valid, and then a critical scale is set for valid data and invalid data. Value, according to the change of the critical value range, further filtering such as figure 1 Noise in case 3 and case 4. So as to get a more stable link.
[0042] The principle model is as follows Figure 4 , Designed a cylinder water column model diagram, and defined a critical scale A. When the receiving end receives an invalid data sequence, it is equivalent to injecting a certain amount of water into the cylindrical bucket. At this...
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The present invention relates to a method for implementing high-speed serial communication data filtering. The method comprises: when receiving an invalid data sequence, resetting the value of a valid data counter to a preset threshold immediately, adding 1 to the value of an invalid data counter, comparing the length of the sequence with a threshold B, and when exceeding the threshold B, regarding data to be invalid, and when not exceeding the threshold B, regarding the data to be valid; and when receiving a valid data sequence or a relatively short valid Comma sequence, comparing the length of the sequence with a threshold A, and when the length is greater than or equal to A, subtracting 1 from the invalid data counter, and comparing the length with a threshold range sequentially. With adoption of the method, filtering processing is performed on the relatively short valid data sequence with Comma, a synchronization signal sequence is steadier, link stability is improved, and the completeness and validity of synchronously received valid data are ensured; the interference of noises on adjacent channels is reduced; and a critical burning line can be adjusted according to a real-time application environment, the applicability of synchronous detection is wider, and the method is adapted to a variety of environmental models.
Description
Technical field [0001] The present invention relates to the technical field of communication, in particular to the technical field of high-speed serial data communication, and specifically refers to a method for realizing high-speed serial communication data filtering. Background technique [0002] The synchronization signal in high-speed serial communication is used to indicate whether the data receiving end has been synchronized with the sending end (or serial input data), thereby indicating whether the received data is valid, and whether the receiving port needs to generate state transitions, such as Transition from the link normal state to the link loss state or reverse transition. For an unstable or noisy link, it is possible to receive figure 1 If the data sequence shown cannot be effectively filtered, it may cause confusion in the entire link state. [0003] Case 1: Two longer valid data sequences are mixed with a shorter invalid data sequence (noise); [0004] Case 2: Two i...
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IPC IPC(8): G06F13/42
CPCG06F13/4282G06F2213/0002
Inventor 王志刚付建武丁小龙
Owner SHANGHAI SAIZHI INFORMATION TECH CO LTD