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    • 5. 发明授权
    • Design method for integrated circuit having scan function
    • 具有扫描功能的集成电路设计方法
    • US06990642B2
    • 2006-01-24
    • US10634857
    • 2003-08-06
    • Toshio Arakawa
    • Toshio Arakawa
    • G06F17/50
    • G01R31/318583G01R31/3016G01R31/31858G06F17/5045
    • The present invention provides a method for designing LSI including a logic circuit equipped with a scan circuit without generating a hard-macro library for the scan flip flops constituting the scan circuit. According to the method, first netlist NL1 is converted into second netlist NL2 by adding scan circuit including scan flip-flops. Order data for connecting scan chain of the scan circuit is extracted from the second netlist NL2. Such second netlist NL2 is converted into third netlist NL3 including only hard-macros, and the third netlist NL3 is laid-out by re-ordering the scan chain so that the newly generated order data for is stored temporally. Fourth netlist NL4 including scan circuit formed by scan flip-flops of soft-macros is generated on the basis of the stored order data, then the fourth netlist NL4 is converted into fifth netlist NL5 by substituting the scan flip-flops of soft-macros for standard cells of hard-macros. Finally the generated fifth netlist is laid-out without re-ordering the scan chain.
    • 本发明提供了一种用于设计LSI的方法,其包括具有扫描电路的逻辑电路,而不产生构成扫描电路的扫描触发器的硬宏库。 根据该方法,通过添加包括扫描触发器的扫描电路,将第一网表NL 1转换为第二网表NL2。 从第二个网表NL2提取连接扫描电路的扫描链的订单数据。 这样的第二网表NL2被转换成仅包括硬宏的第三网表NL 3,并且通过重新排序扫描链来布置第三网表NL3,使得新产生的订单数据被暂时存储。 基于存储的顺序数据生成包括由软宏的扫描触发器形成的扫描电路的第四网表NL4,然后通过将扫描触发器替换为软的第四网表NL5而被转换成第五网表NL5 - 宏的标准单元格的宏。 最后,生成的第五个网表被布局,而不重新排序扫描链。