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1. 发明授权

US07218133B2 Versatile logic element and logic array block 有权
公开(公告)号：US07218133B2
公开(公告)日：2007-05-15
申请号：US11050111
申请日：2005-02-02
申请人： David M. Lewis , Paul Leventis , Andy L. Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher F. Lane , Alexander Marquardt , Vikram Santurkar , Vaughn Timothy Betz
发明人： David M. Lewis , Paul Leventis , Andy L. Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher F. Lane , Alexander Marquardt , Vikram Santurkar , Vaughn Timothy Betz
IPC分类号： H03K19/003
CPC分类号： H03K19/17764 , H03K19/1737 , H03K19/17728 , H03K19/17736
摘要： An embodiment of this invention pertains to a versatile and flexible logic element and logic array block (“LAB”). Each logic element includes a programmable combinational logic function block such as a lookup table (“LUT”) and a flip-flop. Within the logic element, multiplexers are provided to allow the flip-flop and the LUT to be programmably connected such that either the output of the LUT may be connected to the input of the flip-flop or the output of the flip-flop may be connected to the input of the LUT. An additional multiplexer allows the output of the flip-flop in one logic element to be connected to the input of a flip-flop in a different logic element within the same LAB. Output multiplexers selects between the output of the LUT and the output of the flip-flop to generate signals that drive routing lines within the LAB and to routing lines external to the LAB. These output multiplexers are constructed such that the combinational output (output from the LUT) is faster than the output from the flip-flop. A collection of routing lines and multiplexers within the LAB are used to provide inputs to the LUTs. Each of the input multiplexers for each logic element is connected to a subset of the routing lines within the LAB using a specific pattern of connectivity of multiplexers to associated wires that maximizes the efficiency of use of the routing wires. Control signals for the set of logic elements within the LAB are generated using a secondary signal generation unit that minimizes contention for shared signals. One of the control signals is an “add-or-subtract control signal” that allows all of the LEs in a LAB to perform either addition or subtraction under the control of a logic signal. In a PLD supporting redundancy, the carry chain for the LABs is arranged in the same direction that redundancy shifts to remap defective LABs and a multiplexer on the carry input of a LAB is used to select the appropriate carry output from another LAB depending on whether redundancy is engaged.

2. 发明授权

US07432734B2 Versatile logic element and logic array block 有权
公开(公告)号：US07432734B2
公开(公告)日：2008-10-07
申请号：US11743625
申请日：2007-05-02
申请人： David M. Lewis , Paul Leventis , Andy L. Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher F. Lane , Alexander Marquardt , Vikram Santurkar , Vaughn Betz
发明人： David M. Lewis , Paul Leventis , Andy L. Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher F. Lane , Alexander Marquardt , Vikram Santurkar , Vaughn Betz
IPC分类号： H01L25/00 , H03K19/177
CPC分类号： H03K19/17764 , H03K19/1737 , H03K19/17728 , H03K19/17736
摘要： An embodiment of this invention pertains to a versatile and flexible logic element and logic array block (“LAB”). Each logic element includes a programmable combinational logic function block such as a lookup table (“LUT”) and a flip-flop. Within the logic element, multiplexers are provided to allow the flip-flop and the LUT to be programmably connected such that either the output of the LUT may be connected to the input of the flip-flop or the output of the flip-flop may be connected to the input of the LUT. An additional multiplexer allows the output of the flip-flop in one logic element to be connected to the input of a flip-flop in a different logic element within the same LAB. Output multiplexers selects between the output of the LUT and the output of the flip-flop to generate signals that drive routing lines within the LAB and to routing lines external to the LAB. These output multiplexers are constructed such that the combinational output (output from the LUT) is faster than the output from the flip-flop. A collection of routing lines and multiplexers within the LAB are used to provide inputs to the LUTs. Each of the input multiplexers for each logic element is connected to a subset of the routing lines within the LAB using a specific pattern of connectivity of multiplexers to associated wires that maximizes the efficiency of use of the routing wires. Control signals for the set of logic elements within the LAB are generated using a secondary signal generation unit that minimizes contention for shared signals. One of the control signals is an “add-or-subtract control signal” that allows all of the LEs in a LAB to perform either addition or subtraction under the control of a logic signal. In a PLD supporting redundancy, the carry chain for the LABs is arranged in the same direction that redundancy shifts to remap defective LABs and a multiplexer on the carry input of a LAB is used to select the appropriate carry output from another LAB depending on whether redundancy is engaged.

3. 发明授权

US06937064B1 Versatile logic element and logic array block 有权
公开(公告)号：US06937064B1
公开(公告)日：2005-08-30
申请号：US10280723
申请日：2002-10-24
申请人： David M. Lewis , Paul Leventis , Andy L. Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher F. Lane , Alexander Marquardt , Vikram Santurkar , Vaughn Betz
发明人： David M. Lewis , Paul Leventis , Andy L. Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher F. Lane , Alexander Marquardt , Vikram Santurkar , Vaughn Betz
IPC分类号： H03K19/173 , H03K19/177
CPC分类号： H03K19/17764 , H03K19/1737 , H03K19/17728 , H03K19/17736
摘要： An embodiment of this invention pertains to a versatile and flexible logic element and logic array block (“LAB”). Each logic element includes a programmable combinational logic function block such as a lookup table (“LUT”) and a flip-flop. Within the logic element, multiplexers are provided to allow the flip-flop and the LUT to be programmably connected such that either the output of the LUT may be connected to the input of the flip-flop or the output of the flip-flop may be connected to the input of the LUT. An additional multiplexer allows the output of the flip-flop in one logic element to be connected to the input of a flip-flop in a different logic element within the same LAB. Output multiplexers selects between the output of the LUT and the output of the flip-flop to generate signals that drive routing lines within the LAB and to routing lines external to the LAB. These output multiplexers are constructed such that the combinational output (output from the LUT) is faster than the output from the flip-flop. A collection of routing lines and multiplexers within the LAB are used to provide inputs to the LUTs. Each of the input multiplexers for each logic element is connected to a subset of the routing lines within the LAB using a specific pattern of connectivity of multiplexers to associated wires that maximizes the efficiency of use of the routing wires. Control signals for the set of logic elements within the LAB are generated using a secondary signal generation unit that minimizes contention for shared signals. One of the control signals is an “add-or-subtract control signal” that allows all of the LEs in a LAB to perform either addition or subtraction under the control of a logic signal. In a PLD supporting redundancy, the carry chain for the LABs is arranged in the same direction that redundancy shifts to remap defective LABs and a multiplexer on the carry input of a LAB is used to select the appropriate carry output from another LAB depending on whether redundancy is engaged.

4. 发明授权

US07671626B1 Versatile logic element and logic array block 失效
公开(公告)号：US07671626B1
公开(公告)日：2010-03-02
申请号：US12202053
申请日：2008-08-29
申请人： David M. Lewis , Paul Leventis , Andy L. Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher F. Lane , Alexander Marquardt , Vikram Santurkar , Vaughn Betz
发明人： David M. Lewis , Paul Leventis , Andy L. Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher F. Lane , Alexander Marquardt , Vikram Santurkar , Vaughn Betz
IPC分类号： H01L25/00 , H03K19/177
CPC分类号： H03K19/177
摘要： An embodiment of this invention pertains to a versatile and flexible logic element and logic array block (“LAB”). Each logic element includes a programmable combinational logic function block such as a lookup table (“LUT”) and a flip-flop. Within the logic element, multiplexers are provided to allow the flip-flop and the LUT to be programmably connected such that either the output of the LUT may be connected to the input of the flip-flop or the output of the flip-flop may be connected to the input of the LUT. An additional multiplexer allows the output of the flip-flop in one logic element to be connected to the input of a flip-flop in a different logic element within the same LAB. Output multiplexers selects between the output of the LUT and the output of the flip-flop to generate signals that drive routing lines within the LAB and to routing lines external to the LAB. These output multiplexers are constructed such that the combinational output (output from the LUT) is faster than the output from the flip-flop. A collection of routing lines and multiplexers within the LAB are used to provide inputs to the LUTs. Each of the input multiplexers for each logic element is connected to a subset of the routing lines within the LAB using a specific pattern of connectivity of multiplexers to associated wires that maximizes the efficiency of use of the routing wires. Control signals for the set of logic elements within the LAB are generated using a secondary signal generation unit that minimizes contention for shared signals. One of the control signals is an “add-or-subtract control signal” that allows all of the LEs in a LAB to perform either addition or subtraction under the control of a logic signal. In a PLD supporting redundancy, the carry chain for the LABs is arranged in the same direction that redundancy shifts to remap defective LABs and a multiplexer on the carry input of a LAB is used to select the appropriate carry output from another LAB depending on whether redundancy is engaged.

5. 发明申请

US20070252617A1 VERSATILE LOGIC ELEMENT AND LOGIC ARRAY BLOCK 有权
公开(公告)号：US20070252617A1
公开(公告)日：2007-11-01
申请号：US11743625
申请日：2007-05-02
申请人： David Lewis , Paul Leventis , Andy Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher Lane , ALexander Marquardt , Vikram Santurkar , Vaughn Betz
发明人： David Lewis , Paul Leventis , Andy Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher Lane , ALexander Marquardt , Vikram Santurkar , Vaughn Betz
IPC分类号： H03K19/177
CPC分类号： H03K19/17764 , H03K19/1737 , H03K19/17728 , H03K19/17736
摘要： An embodiment of this invention pertains to a versatile and flexible logic element and logic array block (“LAB”). Each logic element includes a programmable combinational logic function block such as a lookup table (“LUT”) and a flip-flop. Within the logic element, multiplexers are provided to allow the flip-flop and the LUT to be programmably connected such that either the output of the LUT may be connected to the input of the flip-flop or the output of the flip-flop may be connected to the input of the LUT. An additional multiplexer allows the output of the flip-flop in one logic element to be connected to the input of a flip-flop in a different logic element within the same LAB. Output multiplexers selects between the output of the LUT and the output of the flip-flop to generate signals that drive routing lines within the LAB and to routing lines external to the LAB. These output multiplexers are constructed such that the combinational output (output from the LUT) is faster than the output from the flip-flop. A collection of routing lines and multiplexers within the LAB are used to provide inputs to the LUTs. Each of the input multiplexers for each logic element is connected to a subset of the routing lines within the LAB using a specific pattern of connectivity of multiplexers to associated wires that maximizes the efficiency of use of the routing wires. Control signals for the set of logic elements within the LAB are generated using a secondary signal generation unit that minimizes contention for shared signals. One of the control signals is an “add-or-subtract control signal” that allows all of the LEs in a LAB to perform either addition or subtraction under the control of a logic signal. In a PLD supporting redundancy, the carry chain for the LABs is arranged in the same direction that redundancy shifts to remap defective LABs and a multiplexer on the carry input of a LAB is used to select the appropriate carry output from another LAB depending on whether redundancy is engaged.

6. 发明申请

US20050127944A1 Versatile logic element and logic array block 有权
公开(公告)号：US20050127944A1
公开(公告)日：2005-06-16
申请号：US11050111
申请日：2005-02-02
申请人： David Lewis , Paul Leventis , Andy Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher Lane , Alexander Marquardt , Vikram Santurkar , Vaughn Betz
发明人： David Lewis , Paul Leventis , Andy Lee , Henry Kim , Bruce Pedersen , Chris Wysocki , Christopher Lane , Alexander Marquardt , Vikram Santurkar , Vaughn Betz
IPC分类号： H03K19/173 , H03K19/177
CPC分类号： H03K19/17764 , H03K19/1737 , H03K19/17728 , H03K19/17736
摘要： An embodiment of this invention pertains to a versatile and flexible logic element and logic array block (“LAB”). Each logic element includes a programmable combinational logic function block such as a lookup table (“LUT”) and a flip-flop. Within the logic element, multiplexers are provided to allow the flip-flop and the LUT to be programmably connected such that either the output of the LUT may be connected to the input of the flip-flop or the output of the flip-flop may be connected to the input of the LUT. An additional multiplexer allows the output of the flip-flop in one logic element to be connected to the input of a flip-flop in a different logic element within the same LAB. Output multiplexers selects between the output of the LUT and the output of the flip-flop to generate signals that drive routing lines within the LAB and to routing lines external to the LAB. These output multiplexers are constructed such that the combinational output (output from the LUT) is faster than the output from the flip-flop. A collection of routing lines and multiplexers within the LAB are used to provide inputs to the LUTs. Each of the input multiplexers for each logic element is connected to a subset of the routing lines within the LAB using a specific pattern of connectivity of multiplexers to associated wires that maximizes the efficiency of use of the routing wires. Control signals for the set of logic elements within the LAB are generated using a secondary signal generation unit that minimizes contention for shared signals. One of the control signals is an “add-or-subtract control signal” that allows all of the LEs in a LAB to perform either addition or subtraction under the control of a logic signal. In a PLD supporting redundancy, the carry chain for the LABs is arranged in the same direction that redundancy shifts to remap defective LABs and a multiplexer on the carry input of a LAB is used to select the appropriate carry output from another LAB depending on whether redundancy is engaged.

7. 发明授权

US07558812B1 Structures for LUT-based arithmetic in PLDs 有权
标题翻译：在PLD中基于LUT的算术的结构
公开(公告)号：US07558812B1
公开(公告)日：2009-07-07
申请号：US10723104
申请日：2003-11-26
申请人： Ketan Padalia , David Cashman , David Lewis , Andy L. Lee , Jay Schleicher , Jinyong Yuan , Henry Kim
发明人： Ketan Padalia , David Cashman , David Lewis , Andy L. Lee , Jay Schleicher , Jinyong Yuan , Henry Kim
IPC分类号： G06F7/38
CPC分类号： G06F7/575 , H03K19/177 , H03K19/17728
摘要： A programmable logic device (PLD) includes a plurality of logic array blocks (LAB's) connected by a PLD routing architecture. At least one LAB includes a logic element (LE) configurable to arithmetically combine a plurality of binary input signals in a plurality of stages. The LE comprises look-up table (LUT) logic having K inputs (a “K-LUT”). The K-LUT is configured to input the binary input signals at respective inputs of the K-LUT logic cell and to provide, at a plurality of outputs of the K-LUT logic cell, respective binary result signals indicative of at least two of the plurality of stages of the arithmetic combination of binary input signals. An input line network includes a network of input lines, the input lines configurable to receive input signals from the PLD routing architecture that represent the binary input signals and to provide the input signals to the K-LUT. An output line network includes a network of output lines, the output lines configured to receive, from the K-LUT, output signals that represent the binary result signals and to provide the output signals to the PLD routing architecture. The described LUT's can perform arithmetic efficiently, as well as non-arithmetic functions.
摘要翻译：可编程逻辑器件（PLD）包括通过PLD路由架构连接的多个逻辑阵列块（LAB）。至少一个LAB包括可配置为在多个级中算术组合多个二进制输入信号的逻辑元件（LE）。 LE包括具有K个输入（“K-LUT”）的查找表（LUT）逻辑。 K-LUT被配置为在K-LUT逻辑单元的相应输入处输入二进制输入信号，并且在K-LUT逻辑单元的多个输出处提供指示至少两个二进制输入信号的算术组合的多级。输入线网络包括输入线路网络，输入线路可配置为从PLD路由架构接收代表二进制输入信号的输入信号，并将输入信号提供给K-LUT。输出线网络包括输出线网络，输出线路被配置为从K-LUT接收表示二进制结果信号的输出信号，并向PLD路由架构提供输出信号。所描述的LUT可以有效地执行算术，以及非算术函数。

8. 发明授权

US08788550B1 Structures for LUT-based arithmetic in PLDs 有权
标题翻译：在PLD中基于LUT的算术的结构
公开(公告)号：US08788550B1
公开(公告)日：2014-07-22
申请号：US12484010
申请日：2009-06-12
申请人： Ketan Padalia , David Cashman , David Lewis , Andy L. Lee , Jay Schleicher , Jinyong Yuan , Henry Kim
发明人： Ketan Padalia , David Cashman , David Lewis , Andy L. Lee , Jay Schleicher , Jinyong Yuan , Henry Kim
IPC分类号： G06F7/38
CPC分类号： G06F7/575 , H03K19/177 , H03K19/17728
摘要： A programmable logic device (PLD) includes a plurality of logic array blocks (LAB's) connected by a PLD routing architecture. At least one LAB includes a logic element (LE) configurable to arithmetically combine a plurality of binary input signals in a plurality of stages. The LE comprises look-up table (LUT) logic having K inputs (a “K-LUT”). The K-LUT is configured to input the binary input signals at respective inputs of the K-LUT logic cell and to provide, at a plurality of outputs of the K-LUT logic cell, respective binary result signals indicative of at least two of the plurality of stages of the arithmetic combination of binary input signals. An input line network includes a network of input lines, the input lines configurable to receive input signals from the PLD routing architecture that represent the binary input signals and to provide the input signals to the K-LUT. An output line network includes a network of output lines, the output lines configured to receive, from the K-LUT, output signals that represent the binary result signals and to provide the output signals to the PLD routing architecture. The described LUT's can perform arithmetic efficiently, as well as non-arithmetic functions.
摘要翻译：可编程逻辑器件（PLD）包括通过PLD路由架构连接的多个逻辑阵列块（LAB）。至少一个LAB包括可配置为在多个级中算术组合多个二进制输入信号的逻辑元件（LE）。 LE包括具有K个输入（“K-LUT”）的查找表（LUT）逻辑。 K-LUT被配置为在K-LUT逻辑单元的相应输入处输入二进制输入信号，并且在K-LUT逻辑单元的多个输出处提供指示至少两个二进制输入信号的算术组合的多级。输入线网络包括输入线路网络，输入线路可配置为从PLD路由架构接收代表二进制输入信号的输入信号，并将输入信号提供给K-LUT。输出线网络包括输出线网络，输出线路被配置为从K-LUT接收表示二进制结果信号的输出信号，并向PLD路由架构提供输出信号。所描述的LUT可以有效地执行算术，以及非算术函数。

9. 发明授权

US07671625B1 Omnibus logic element 有权
标题翻译：综合逻辑元素
公开(公告)号：US07671625B1
公开(公告)日：2010-03-02
申请号：US12043087
申请日：2008-03-05
申请人： James Schleicher , Richard Yuan , Bruce Pedersen , Sinan Kaptanoglu , Gregg Baeckler , David Lewis , Michael Hutton , Andy Lee , Rahul Saini , Henry Kim
发明人： James Schleicher , Richard Yuan , Bruce Pedersen , Sinan Kaptanoglu , Gregg Baeckler , David Lewis , Michael Hutton , Andy Lee , Rahul Saini , Henry Kim
IPC分类号： H03K19/177
CPC分类号： H03K19/17728 , G06F7/50 , H03K19/017581
摘要： Disclosed is an LE that can provide a number of advantageous features. For example, the LE can provide efficient and flexible use of LUTs and input sharing. The LE may also provide for flexible use of one or more dedicated adders and include register functionality.
摘要翻译：公开了可以提供许多有利特征的LE。例如，LE可以提供LUT和输入共享的高效灵活的使用。 LE还可以灵活地使用一个或多个专用加法器并且包括寄存器功能。

10. 发明授权

US08593174B1 Omnibus logic element for packing or fracturing 有权
$Omnibus logic element for packing or fracturing$
标题翻译：用于包装或压裂的综合逻辑元件
公开(公告)号：US08593174B1
公开(公告)日：2013-11-26
申请号：US13539007
申请日：2012-06-29
申请人： James Schleicher , Richard Yuan , Bruce Pedersen , Sinan Kaptanoglu , Gregg Baeckler , David Lewis , Mike Hutton , Andy Lee , Rahul Saini , Henry Kim
发明人： James Schleicher , Richard Yuan , Bruce Pedersen , Sinan Kaptanoglu , Gregg Baeckler , David Lewis , Mike Hutton , Andy Lee , Rahul Saini , Henry Kim
IPC分类号： H03K19/177
CPC分类号： H03K19/17728 , G06F7/50 , H03K19/017581
摘要： Disclosed is a logic element (LE) that can provide a number of advantageous features. For example, the LE can be configured to implement register packing and/or a fracturable look up table.
摘要翻译：公开了可以提供多个有利特征的逻辑元件（LE）。例如，LE可以被配置为实现寄存器打包和/或可破碎的查找表。

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