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US 5,844,424 AGranted
Programmably bidirectional buffered interconnect circuit
AssigneeXilinx, Inc.
InventorsSridhar Krishnamurthy, Shekhar Bapat
Life of this patent
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Abstract
A programmable bidirectional interconnect circuit selectively provides either a buffered connection, a non-buffered connection, or a disconnection (tristate mode). The circuit includes six transistors coupled to a buffer and two signal lines.
Claims2
A programmable bidirectional interconnect circuit comprising:
- a buffer having an input terminal and an output terminal;
- first and second signal lines;
- a first transistor connected between said first signal line and said input terminal of said buffer;
- a transistor pair, including second and third transistors, connected between said second signal line and said input terminal of said buffer;
- a fourth transistor connected to said first signal line;
- a fifth transistor connected to said second signal line;
- a sixth transistor connected to said output terminal of said buffer, said fourth transistor, and said fifth transistor;
- first control means for controlling said first, second, fourth, and fifth transistors;
- and
- second control means for controlling said third and sixth transistors.
7 more elements
A programmable bidirectional interconnect circuit comprising:
- a buffer having an input terminal and an output terminal;
- first and second signal lines;
- a first transistor connected between said first signal line and said input terminal of said buffer;
- a transistor pair, including second and third transistors, connected to said second signal line;
- a fourth transistor connected to said first signal line;
- a fifth transistor connected between said second signal line and said input terminal of said buffer;
- a sixth transistor connected to said output terminal of said buffer, said transistor pair, and said fourth transistor;
- first control means for controlling said first, second, fourth, and fifth transistors;
- and
- second control means for controlling said third and sixth transistors.
7 more elements
Dependencies are inferred from the claim text.