Back power protection circuit
First Claim
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1. An apparatus comprising:
- one or more signal lines;
a transceiver coupled to the one or more signal lines;
a sense circuit to sense signal attributes of the one or more signal lines;
a bias generation circuit to provide one or more bias voltages for the transceiver to tri-state the transceiver according to the signal attributes of the one or more signal lines sensed by the sense circuit, wherein the bias generation circuit is to tri-state the transceiver by causing the transceiver to provide a high impedance;
a power-up detector to detect one or more power supplies which are provided to the transceiver; and
a circuit which is operable to select, for the transceiver, one or more bias voltages from the power-up detector or the one or more bias voltages from the bias generation circuit.
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Abstract
Described is an apparatus which comprises: one or more signal lines; a transceiver coupled to the one or more signal lines; and a bias generation circuit to provide one or more bias voltages for the transceiver to tri-state the transceiver according to signal attributes of the one or more signal lines.
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11 Claims
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1. An apparatus comprising:
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one or more signal lines; a transceiver coupled to the one or more signal lines; a sense circuit to sense signal attributes of the one or more signal lines; a bias generation circuit to provide one or more bias voltages for the transceiver to tri-state the transceiver according to the signal attributes of the one or more signal lines sensed by the sense circuit, wherein the bias generation circuit is to tri-state the transceiver by causing the transceiver to provide a high impedance; a power-up detector to detect one or more power supplies which are provided to the transceiver; and a circuit which is operable to select, for the transceiver, one or more bias voltages from the power-up detector or the one or more bias voltages from the bias generation circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification