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公开(公告)号：US20190326896A1
公开(公告)日：2019-10-24
申请号：US16397966
申请日：2019-04-29
Applicant: Apple Inc.
Inventor： Huy M. Nguyen , Seong Hoon Lee
Abstract: A method and apparatus for receiving reduced voltage swing signals is disclosed. A first amplifier may generate a first intermediate signal based on a difference between voltage levels of a first and second input signals, and a second amplifier may generate a second intermediate signal based on a difference in the voltage levels between the second and first input signals. A regenerative amplifier may increase a difference in the voltage level of the first and second intermediate signals using regenerative feedback and the voltage levels of the first and second input signals. A latch circuit may generate first and second output signals using the first and second intermediate signals.
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Patent Agency Ranking
公开(公告)号：US10566963B2
公开(公告)日：2020-02-18
申请号：US16397966
申请日：2019-04-29
Applicant: Apple Inc.
Inventor： Huy M. Nguyen , Seong Hoon Lee
Abstract: A method and apparatus for receiving reduced voltage swing signals is disclosed. A first amplifier may generate a first intermediate signal based on a difference between voltage levels of a first and second input signals, and a second amplifier may generate a second intermediate signal based on a difference in the voltage levels between the second and first input signals. A regenerative amplifier may increase a difference in the voltage level of the first and second intermediate signals using regenerative feedback and the voltage levels of the first and second input signals. A latch circuit may generate first and second output signals using the first and second intermediate signals.
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公开(公告)号：US20190066777A1
公开(公告)日：2019-02-28
申请号：US15684594
申请日：2017-08-23
Applicant: Apple Inc.
Inventor： Huy M. Nguyen , Seong Hoon Lee
Abstract: Systems, apparatuses, and methods for generating a reference voltage are described. In various embodiments, an interface between a memory and a processor uses a reference voltage generator to generate a reference voltage for a single pin or a small group of pins. The generator generates a default reference voltage from a first tap in a resistor ladder, injects current with a current controller into a second tap of the resistor ladder when the generator receives an indication to generate a larger reference voltage, and draws current from a third tap of the resistor ladder when the generator receives an indication to generate a smaller reference voltage. The generator also generates a high threshold voltage independent of a low threshold voltage after calibration.
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公开(公告)号：US10651979B1
公开(公告)日：2020-05-12
申请号：US16431482
申请日：2019-06-04
Applicant: Apple Inc.
Inventor： Mitesh D. Katakwar , Seong Hoon Lee , Huy M. Nguyen
Abstract: An apparatus includes first and second receiver circuits and a decision circuit. The first receiver circuit is configured to generate a first data symbol from a particular input data symbol of a plurality of input data symbols included in an input signal. The second receiver circuit is configured to generate a second data symbol from the particular input data symbol. The decision circuit is configured to select, using respective values of one or more previous output data symbols, either the first or second data symbol as a current output data symbol. In response to a change in value between successive input data symbols, the first and second receiver circuits are configured to generate the first and second data symbols with respective data valid windows with different durations.
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公开(公告)号：US10304530B2
公开(公告)日：2019-05-28
申请号：US15684594
申请日：2017-08-23
Applicant: Apple Inc.
Inventor： Huy M. Nguyen , Seong Hoon Lee
Abstract: Systems, apparatuses, and methods for generating a reference voltage are described. In various embodiments, an interface between a memory and a processor uses a reference voltage generator to generate a reference voltage for a single pin or a small group of pins. The generator generates a default reference voltage from a first tap in a resistor ladder, injects current with a current controller into a second tap of the resistor ladder when the generator receives an indication to generate a larger reference voltage, and draws current from a third tap of the resistor ladder when the generator receives an indication to generate a smaller reference voltage. The generator also generates a high threshold voltage independent of a low threshold voltage after calibration.
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公开(公告)号：US10277216B1
公开(公告)日：2019-04-30
申请号：US15717865
申请日：2017-09-27
Applicant: Apple Inc.
Inventor： Huy M. Nguyen , Seong Hoon Lee
Abstract: A method and apparatus for receiving reduced voltage swing signals is disclosed. A first amplifier may generate a first intermediate signal based on a difference between voltage levels of a first and second input signals, and a second amplifier may generate a second intermediate signal based on a difference in the voltage levels between the second and first input signals. A regenerative amplifier may increase a difference in the voltage level of the first and second intermediate signals using regenerative feedback and the voltage levels of the first and second input signals. A latch circuit may generate first and second output signals using the first and second intermediate signals.
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