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High-precision timestamp verification method based on UVM

A verification method and high-precision technology, applied in the field of communication, can solve problems such as the inability to meet the accuracy of measuring instruments and industrial control, and achieve the effect of improving verification work efficiency, high portability and reusability, and clear architecture

Pending Publication Date: 2022-07-12
芯河半导体科技(无锡)有限公司
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AI Technical Summary

Problems solved by technology

The synchronization accuracy of the NTP version in 1992 can reach 100+us level, but it still cannot meet the accuracy required by measuring instruments and industrial control

Method used

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  • High-precision timestamp verification method based on UVM
  • High-precision timestamp verification method based on UVM
  • High-precision timestamp verification method based on UVM

Examples

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Embodiment 1

[0041] A UVM-based high-precision timestamp verification method, the component interaction process is as follows figure 2 described, as follows:

[0042] The S1 packet sending component generates an Ethernet frame, and sends the generated Ethernet frame to the filling component;

[0043] The frame format is as follows: DA+SA+VLAN+T / L+Payload+CRC; among them,

[0044]DA: Destination Address, destination address;

[0045] SA: Source Address, source address;

[0046] VLAN: Virtual Local Area Network, virtual local area network;

[0047] T / L: Type / Length, type / length;

[0048] Payload: payload data;

[0049] CRC: Cyclic Redundancy Check, Cyclic Redundancy Check.

[0050] The length can be constrained in the implementation use case.

[0051] The specific processing logic steps are as follows image 3 shown.

[0052] Run the timestamp verification case, the packet sending component generates Ethernet frames according to the verification case constraints, including 5 ways: ...

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Abstract

According to the high-precision timestamp verification method based on the UVM, precision verification of various timestamp message types compatible with various 1588 nodes (OC / BC / TC) is achieved by constructing the high-precision timestamp verification method, the verification timestamp precision can reach the ns level, and the functions of most related products can be covered and verified; the modular component design is convenient to transplant, the architecture is clear, higher portability and reusability are achieved, and the verification work efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a UVM-based high-precision timestamp verification method. Background technique [0002] In order to solve the insufficiency of the Ethernet timing synchronization capability, a network time protocol (NTP, network time protocol) has been developed in the computer and network industries to improve the timing synchronization capability among various network devices. The synchronization accuracy of the NTP version in 1992 can reach 100+us level, but it still cannot meet the accuracy required for measuring instruments and industrial control. In order to solve the need for timing synchronization of distributed networks for measurement and control applications, the IEEE1588 standard came into being. [0003] The full name of the IEEE1588 protocol is "Precision Clock Synchronization Protocol Standard for Network Measurement and Control Systems", which is a general specification f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0667H04J3/067Y02P90/02
Inventor 袁阳
Owner 芯河半导体科技(无锡)有限公司
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