Invention Grant
US08806413B2 Gradient AOCV methodology enabling graph-based timing closure with AOCV timing models
有权
梯度AOCV方法，使用基于AOCV时序模型的基于图形的时序收敛
- Patent Title: Gradient AOCV methodology enabling graph-based timing closure with AOCV timing models
- Patent Title (中): 梯度AOCV方法，使用基于AOCV时序模型的基于图形的时序收敛
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Application No.: US14028834Application Date: 2013-09-17
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Publication No.: US08806413B2Publication Date: 2014-08-12
- Inventor: Raashid Moin Shaikh , Vishnuraj Arukat Rajan
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Robert D. Marshall, Jr.; W. James Brady; Frederick J. Telecky, Jr.
- Main IPC: G06F17/50
- IPC: G06F17/50
Abstract:
A method of manufacturing semiconductor circuits seeks timing closure on a preliminarily select, placed and routed set of cells using a delay for each cell as derated by a derate value obtained from a timing model table having a derate value corresponding to a circuit path depth in the netlist. The derate value for a predetermined number of circuit path depths below k are identical. The derate values are monotonically decreasing for increasing circuit depths in a range between 1.0 and 1.5. Separate timing model tables with differing identical values can be employed for standard and clock tree cells.
Public/Granted literature
- US20140082576A1 GRADIENT AOCV METHODOLOGY ENABLING GRAPH-BASED TIMING CLOSURE WITH AOCV TIMING MODELS Public/Granted day:2014-03-20
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