基于SRAM乒乓缓存信号完整性分析Signal integrity analysis based on Ping-Pong buffer circuit of SRAM
陈治洲,曹开钦,柴孟阳,孙德新,刘银年
摘要(Abstract):
为保证电子学系统运行的可靠性,分析电路芯片间传输信号的时序和质量至关重要。基于一块航天应用的图像数据压缩电路,在电路设计、调试过程中引入信号完整性设计方法学,对电路关键网络乒乓缓存电路进行信号完整性分析。在layout前利用Hyperlynx软件对电路进行前仿真得出FPGA的管脚约束和布局布线约束,在layout后利用Ansys软件对电路进行后仿真观察布线后信号波形和时序,电路板实际加工后测量信号的波形与仿真结果一致,电路设计一次通过,大大缩短了电路的调试时间,对类似设计有一定的借鉴意义。
关键词(KeyWords): 电路设计;乒乓缓存;SRAM;前仿真;后仿真;信号完整性;图像压缩
基金项目(Foundation): 国家重点研发计划资助(2017YFC0602103);; 国家“863”计划(2014AA123201);; 国家高分辨率对地观测系统重大专项(A0106/1112)~~
作者(Author): 陈治洲,曹开钦,柴孟阳,孙德新,刘银年
DOI: 10.16652/j.issn.1004-373x.2018.05.019
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