Integrated programmable logic circuit for conditioning received input signals, detecting transitions of conditioned signals, and generating an associated interrupt respectively
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United States of America Patent
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Nov 16, 1999
Issued Date -
N/A
app pub date -
Sep 11, 1997
filing date -
Feb 18, 1997
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Abstract
A flexible general input/output function utilizes a programmable logic circuit in conjunction with general purpose input/output pins. A programmable logic circuit receives the input signals from the input terminals. The programmable logic circuit program conditions the input signals and provides conditioned input signals to the remainder of the integrated circuit. An input register receives the conditioned input signals from the programmable logic circuit, and stores values representing the state of respective conditioned input signals. A transition detection circuit detects a specified transition for each of the conditioned input signals it receives and provides an indication of the specified transition. An interrupt circuit is responsive to transition indications provided from the transition detection circuit to generate an interrupt signal associated with the specified transition of a respective conditioned input signal. The integrated circuit also includes output terminals, which are coupled to the programmable logic circuit. An output register, which can be written by the system processor, provides output signals which are conditioned by the programmable logic circuit and provided to the output terminals.
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- 15 United States
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Patent Owner(s)
- ADVANCED MICRO DEVICES, INC.
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Gulick, Dale E | Austin, TX | 150 | 4408 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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