Conformal ECO寄存器新增的扫描链自动化接入方案  

Logical&physical aware automatic solution for scan chain insertion of newly added registers in Conformal ECO

作　　者：曾子豪 Zeng Zihao(Bestechnic(Shanghai)Co.,Ltd.,Shanghai 201203,China)

机构地区：[1]恒玄科技(上海)有限公司,上海201203

出　　处：《电子技术应用》2024年第8期17-20,共4页Application of Electronic Technique

摘　　要：随着芯片规模的增加,ECO的需求和大小也随之增加,其中当新增寄存器数量达到百位量级时,人工接入扫描链难度也将急剧上升。基于Cadence的Conformal和Innovus等工具,在综合考量逻辑正确性和中后端物理实现可行性的基础上,采用归一思路下的“S”型连线和room值下的再分组等方法,实现了上述问题的自动化和高效化解决,在逻辑上确保了时钟域一致性等问题,物理上同时兼顾了布局布线优化和最大扫描链长度。并且其自动化的高效性,在项目实践中能够快速完成上百数量寄存器的扫描链接入。With the scale of Digital IC increasing,ECO is more frequently and largely used during implementation flow.When hundreds of newly added registers are required,the manually insertion to exist scan chain for these registers is a big challenge for engineers.This paper describes an automatic solution for above problem with both logical and physical concerns,based on Cadence Conformal and Innovus.For logical part,the clock domain consistence is correctly obeyed.And for physical part,both longest scan chain length and Place&Route friendly requirement are covered well.Moreover,as the nature of automatic solution,hundreds of newly added registers could be inserted efficiently and safely during practice.

关 键 词：Conformal ECO 扫描链 新增寄存器 自动化 

分 类 号：TN402[电子电信—微电子学与固体电子学]