Volume 40, Number 2, April 2022
|Page(s)||369 - 376|
|Published online||03 June 2022|
Verification and reliability analysis of synchronizers in clock domain crossing
Civil Aircraft Airworthiness and Repair Key Laboratory of Tianjin, Civil Aviation University of China, Tianjin 300300, China
2 Airworthiness College, Civil Aviation University of China, Tianjin 300300, China
There are a large number of multi-clock domain circuits in the airborne equipment of aircraft. When data is transmitted across the clock domain, meta-stability may occur, resulting in data transmission errors and reduced circuit reliability. However, due to the occasional and non-reproducible faults caused by metastability, and the high cost of existing cross-clock domain specific verification software, cross-clock domain circuit verification in three-mode redundancy scenarios is not supported. To solve this problem, a method that combines register transfer level (RTL) validation, board-level accelerated testing and computational evaluation based on traditional tools is presented. This method can detect the cross-clock domain transmission problems in three-mode application scenarios or normal scenarios and assess potential cross-clock domain transmission risks using generic simulation tools at an early stage of design. It reduces the cost of economy and time for high safety level airborne complex electronic verification, and improves the reliability of the circuit.
Key words: airborne electronics equipment / clock domain crossing(CDC) / register transfer level (RTL) verification / Reliability
关键字 : 机载电子 / 跨时钟域 / 寄存器传输级验证 / 可靠性
© 2022 Journal of Northwestern Polytechnical University. All rights reserved.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.