发明授权
- 专利标题: Fracturable lookup table and logic element
- 专利标题(中): 可破坏的查找表和逻辑元素
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申请号: US12834404申请日: 2010-07-12
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公开(公告)号: US08217678B1公开(公告)日: 2012-07-10
- 发明人: David Lewis , Bruce Pedersen , Sinan Kaptanoglu , Andy L. Lee
- 申请人: David Lewis , Bruce Pedersen , Sinan Kaptanoglu , Andy L. Lee
- 申请人地址: US CA San Jose
- 专利权人: Altera Corporation
- 当前专利权人: Altera Corporation
- 当前专利权人地址: US CA San Jose
- 代理机构: Weaver Austin Villeneuve & Sampson LLP
- 主分类号: H03K19/173
- IPC分类号: H03K19/173
摘要:
A logic element includes memory elements, multiplexers, and controls. The multiplexers are arranged in levels including a highest level of multiplexers with inputs connected to the memory elements and outputs connected to inputs of a next-to-highest level of multiplexers and a first level of multiplexers with inputs connected to outputs of a second level of multiplexers and at least one output. The controls are connected to the multiplexers. In a first operational mode the controls determine a first-mode output at the at least one output of the first level of multiplexers, and in a second operational mode the controls determine a plurality of second-mode outputs at selected outputs of multiplexers not at the first level of multiplexers.
信息查询
IPC分类: