电子与封装2026，Vol.26Issue(4)：14-20,7.DOI:10.16257/j.cnki.1681-1070.2026.0038
一种面向复杂环境下SiP通信异常的分析方法
Method for Analyzing SiP Communication Failures in Complex Environments
刘莹 1文艺桦 1赵钢 1孙兵 1王义东 1冉慧玲1
作者信息
- 1. 中国电科芯片技术研究院,重庆 401332
- 折叠
摘要
Abstract
The system-in-package(SiP)technology significantly reduces the size,mass,and power consumption of systems by integrating multiple functional modules,and is widely used in fields such as aerospace,precision guidance,and radar detection.However,the non-testability of internal interconnection signals in SiP makes failure analysis in complex environments extremely challenging.SiP fault diagnosis typically entails either using external flying leads to inject excitation signals and monitor signals,or desoldering the SiP from the system for testing and analysis with professional equipment.These approaches often cause irreversible damage to the fault site,and may even lead to the disappearance of fault phenomena.Focusing on the probabilistic failure of a digital SiP during environmental testing,this paper proposes a delay chain scanning method,which successfully reproduces and locates the ASI communication fault without disturbing the fault condition.The method utilizes internal resources of programmable devices to construct timing scan vectors with a precision of 76 ps.Its key advantage lies in that excitation generation and result observation are completed internally,without additional instruments.This method solves the challenges in digital SiP fault analysis and provides a valuable reference for similar issues.Using this method,the root cause of the ASI communication fault is accurately identified as insufficient timing margin between the reset and clock signals in the serial-to-parallel unit.The ASI communication fault is effectively resolved by inserting a 1.52 ns logic delay into the reset signal.关键词
系统级封装(SiP)/ASI通信故障/SiP失效/延迟链/时序余量不足Key words
system-in-package(SiP)/ASI communication failure/SiP failure/delay chain/insufficient timing margin分类
信息技术与安全科学引用本文复制引用
刘莹,文艺桦,赵钢,孙兵,王义东,冉慧玲..一种面向复杂环境下SiP通信异常的分析方法[J].电子与封装,2026,26(4):14-20,7.
