Programmable device configuration methods incorporating retiming,申请号US201414341030-传众专利搜索

Programmable device configuration methods incorporating retiming

申请公布号：US9384311(B1)

申请号：US201414341030

申请日期：2014.07.25

申请公布日期：2016.07.05

申请人：

Altera Corporation

发明人：Sinnadurai Nishanth;Chiu Gordon Raymond

分类号：G06F17/50

主分类号：G06F17/50

代理机构：

Fletcher Yoder, P.C.

代理人：Fletcher Yoder, P.C.

地址：San Jose CA US

摘要：A method of configuring an integrated circuit device with a user logic design includes placing and routing the user logic design, retiming the placed and routed user logic design, examining the retimed user logic design for at least one path that lacks sufficient registers for retiming, and rerouting the user logic design to find additional registers for further retiming the at least one path. Portions of the method may be performed iteratively until a condition, which may be a performance criterion, is met. The method may further include assuming the paths that are constrained have been repaired, and examining further paths downstream from those paths.

主权项：1. A method of configuring an integrated circuit device, that has a limited number of registers available for retiming, with a user logic design, said method comprising: placing and routing said user logic design on said integrated circuit device that has said limited number of registers available for retiming; retiming said placed and routed user logic design on said integrated circuit device that has said limited number of registers available for retiming; examining said retimed, placed and routed user logic design, on said integrated circuit device that has said limited number of registers available for retiming, for at least one path that lacks sufficient registers for retiming; rerouting said examined, retimed, placed and routed user logic design on said integrated circuit device that has said limited number of registers available for retiming, to find additional registers on said integrated circuit device that are available for retiming; and further retiming said at least one path, on said integrated circuit device that has said limited number of registers available for retiming, using said additional registers.