PROGRAMMABLE LOGIC BASED LATCHES AND SHIFT REGISTERS
First Claim
Patent Images
1. A latch, comprising:
- a first programmable logic element (LE);
a second programmable logic element (LE);
an output of the first LE adapted to directly couple to a first input of the second LE;
an output of the second LE coupled to a first input of the first LE;
a first common input coupled to a second input of the first and second LE; and
a second common input coupled to a third input of the first and second LE.
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Abstract
A latch is described, comprising: a first programmable logic element (LE); and a second programmable logic element (LE); and an output of the first LE adapted to directly couple to a first input of the second LE; and an output of the second LE coupled to a first input of the first LE; and a first common input coupled to a second input of the first and second LE; and a second common input coupled to a third input of the first and second LE.
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Citations
20 Claims
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1. A latch, comprising:
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a first programmable logic element (LE); a second programmable logic element (LE); an output of the first LE adapted to directly couple to a first input of the second LE; an output of the second LE coupled to a first input of the first LE; a first common input coupled to a second input of the first and second LE; and a second common input coupled to a third input of the first and second LE. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for providing a latch, comprising:
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providing a first logic element (LE) having at least three inputs and an output; providing a second logic element (LE) having at least three inputs and an output; providing a configuration circuit having memory elements to program the first and second logic elements; providing a local interconnect to couple the first LE output to the first input of second LE; coupling the second LE output to the first input of first LE; coupling a data input to the second input of first and second LE; and coupling a control input to the third input of first and second LE. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A programmable logic device adapted to implement a latch, the device comprising:
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a plurality of programmable logic element (LE), each LE having a plurality of inputs and at least one output; a configuration circuit to configure the programmable logic elements; an output of a first LE adapted to directly couple to a first input of a second LE; an output of the second LE coupled to a first input of the first LE; a data input coupled to a second input of the first and second LE; and a control input coupled to a third input of the first and second LE. - View Dependent Claims (19, 20)
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Specification