Circuitry for active cable
First Claim
Patent Images
1. An active cable comprising:
- a cable;
a first plug connected to a first end of the cable and comprising;
a first clock and data recovery circuit to retime signals received at an input of the first plug;
a second clock and data recovery circuit to retime signals received from the cable; and
a first microcontroller to configure the first clock and data recovery circuit and the second clock and data recovery circuit; and
a second plug connected to a second end of the cable and comprising;
a third clock and data recovery circuit to retime signals received at an input of the second plug;
a fourth clock and data recovery circuit to retime signals received from the cable; and
a second microcontroller to configure the third clock and data recovery circuit and the fourth clock and data recovery circuit.
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Abstract
Circuits, methods, and apparatus that allow signals that are compliant with multiple standards to share a common connector on an electronic device. An exemplary embodiment of the present invention provides a connector that provides signals compatible with a legacy standard in one mode and a newer standard in another mode.
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Citations
20 Claims
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1. An active cable comprising:
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a cable; a first plug connected to a first end of the cable and comprising; a first clock and data recovery circuit to retime signals received at an input of the first plug; a second clock and data recovery circuit to retime signals received from the cable; and a first microcontroller to configure the first clock and data recovery circuit and the second clock and data recovery circuit; and a second plug connected to a second end of the cable and comprising; a third clock and data recovery circuit to retime signals received at an input of the second plug; a fourth clock and data recovery circuit to retime signals received from the cable; and a second microcontroller to configure the third clock and data recovery circuit and the fourth clock and data recovery circuit. - View Dependent Claims (2, 3, 4, 5)
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6. A cable assembly comprising:
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a cable; a first plug coupled to a first end of the cable and comprising first circuitry to receive and transmit signals; and a second plug coupled to a second end of the cable and comprising second circuitry to receive and transmit signals, wherein when the cable conveys signals consistent with a first protocol, the first circuitry and the second circuitry are powered, and when the cable conveys signals consistent with a second protocol, the first circuitry and the second circuitry are not powered. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An electronic device comprising:
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a connector including a plurality of pins; a first output circuit coupled to a first pin in the plurality of pins and comprising; a selection circuit coupled to the first pin; a first driver AC coupled to the selection circuit; and a second driver AC coupled to an attenuator, the attenuator coupled to the selection circuit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification