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2. 发明授权

US07681160B1 Weight based look up table collapsing for programmable logic devices 有权
标题翻译：基于重量的查找表可折叠可编程逻辑器件
公开(公告)号：US07681160B1
公开(公告)日：2010-03-16
申请号：US11863016
申请日：2007-09-27
申请人： Gilles Bosco , Issak Veytsman , Harish Venkatappa
发明人： Gilles Bosco , Issak Veytsman , Harish Venkatappa
IPC分类号： G06F17/50 , G06F9/45 , H03K17/693
CPC分类号： G06F17/5054 , G06F17/5031 , G06F2217/84 , H03K19/177
摘要： Various techniques are provided to selectively collapse connections. In one example, a computer readable medium includes a computer program for performing a method of selectively collapsing connections between a plurality of LUTs. The method includes performing a first timing analysis to determine a timing slack value for each connection and determine a number of timing paths using each connection. The method also includes calculating a weight for each connection based on at least the timing slack value and the number of timing paths. The method further includes comparing the connections associated with a first one weight interval with collapsing criteria, wherein the first weight interval includes weights larger than weights of the remaining weight intervals. The method also includes collapsing the connections associated with the first weight interval that satisfy the collapsing criteria, and selectively repeating the comparing and collapsing for connections associated with remaining weight intervals.
摘要翻译：提供各种技术来选择性地折叠连接。在一个示例中，计算机可读介质包括用于执行选择性地折叠多个LUT之间的连接的方法的计算机程序。该方法包括执行第一定时分析以确定每个连接的定时松弛值，并使用每个连接确定多个定时路径。该方法还包括至少基于定时松弛值和定时路径的数量来计算每个连接的权重。该方法还包括将与第一个权重间隔相关联的连接与折叠标准进行比较，其中第一权重间隔包括大于剩余权重间隔权重的权重。该方法还包括折叠与第一权重间隔相关联的满足折叠标准的连接，并且选择性地重复与剩余权重间隔相关联的连接的比较和折叠。

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