Discharge protection circuit
First Claim
Patent Images
1. A chip, comprising:
- a signal node, a high supply referenced node, and a low supply reference node;
a power clamp coupled between the high and low supply reference nodes; and
a first rectifier coupled between the signal node and the high supply reference node and a second rectifier coupled between the signal node and the low supply reference node, said first and second rectifiers to unidirectionally block the supply reference nodes from the signal node to provide a signal operating window.
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Abstract
In some embodiments, a discharge protection circuit having an operational mode and a protection mode is provided.
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Citations
21 Claims
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1. A chip, comprising:
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a signal node, a high supply referenced node, and a low supply reference node; a power clamp coupled between the high and low supply reference nodes; and a first rectifier coupled between the signal node and the high supply reference node and a second rectifier coupled between the signal node and the low supply reference node, said first and second rectifiers to unidirectionally block the supply reference nodes from the signal node to provide a signal operating window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An integrated circuit, comprising:
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a signal node to be coupled to an external link partner; and a discharge protection circuit coupled to the signal node to provide it with a signal operating window when the link partner is actively coupled to the signal node. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A system, comprising:
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(a) a microprocessor chip; (b) at least one memory chip coupled to the microprocessor chip; and (c) a link interface chip to coupled a link partner to the microprocessor chip, the link interface chip comprising a signal node to be coupled to the link partner, and a discharge protection circuit coupled to the signal node to provide it with a signal operating window when the link partner is actively coupled to the signal node. - View Dependent Claims (19, 21)
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20. A chip comprising:
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a detection circuit to detect a cable connection; and a discharge protection circuit coupled to the detection circuit, the discharge protection circuit to be in a protection mode while the cable is being connected and for a duration after it has been connected.
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Specification