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1.发明申请公开(公告)号：US20180054223A1
公开(公告)日：2018-02-22
申请号：US15240549
申请日：2016-08-18
Applicant: Advanced Micro Devices, Inc.
Inventor： Milam Paraschou , Gerald R. Talbot , Dean E. Gonzales
CPC classification number: H04B1/0475 , H03F3/45475 , H03F2200/369 , H03F2203/45034 , H03F2203/45134 , H03F2203/45138 , H03H11/52
Abstract: Systems, apparatuses, and methods for implementing a negative resistance circuit for bandwidth extension are disclosed. Within a feedback path of a differential signal path, capacitors are placed on the inputs and outputs of a fully differential amplifier connecting to the differential signal path. In one embodiment, a circuit includes a fully differential amplifier and four capacitors. A first capacitor is coupled between a first signal path and a non-inverting input terminal of the amplifier and a second capacitor is coupled between the first signal path and a non-inverting output terminal of the amplifier. A third capacitor is coupled between a second signal path and an inverting input terminal of the amplifier and a fourth capacitor is coupled between the second signal path and an inverting output terminal of the amplifier. The first and second signal paths carry a differential signal.
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公开(公告)号：US20230308132A1
公开(公告)日：2023-09-28
申请号：US17705022
申请日：2022-03-25
Applicant: Advanced Micro Devices, Inc.
Inventor： Dean E. Gonzales , Edoardo Prete , Milam Paraschou , Mark Chirachanchai , Gerald R. Talbot
Abstract: Systems, apparatuses, and methods for performing efficient data transfer in a computing system are disclosed. A computing system includes multiple transmitters sending singled-ended data signals to multiple receivers. In order to better handle noise issues when using single-ended signaling, one or more of the receivers include equalization circuitry and termination circuitry. The termination circuitry prevents reflection on a corresponding transmission line ending at a corresponding receiver. The equalization circuitry uses a bridged T-coil circuit to provide continuous time linear equalization (CTLE) with no feedback loop. The equalization circuitry performs equalization by providing a high-pass filter that offsets the low-pass characteristics of a corresponding transmission line. A comparator of the receiver receives the input signal and compares it to a reference voltage. The placement of the comparator and the ratio of the inductances of the inductors of the bridged T-coil circuit are based on whether the receiver includes self-diagnostic circuitry.
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公开(公告)号：US11487605B2
公开(公告)日：2022-11-01
申请号：US15921489
申请日：2018-03-14
Applicant: Advanced Micro Devices, Inc.
Inventor： David A. Roberts , Dean E. Gonzales
IPC: G06F11/07 , G06F13/376
Abstract: Techniques are provided herein for pre-emptively reinforcing one or more buses of a computing device against the effects of signal noise that could cause a reduction in signal integrity. The techniques generally include detecting an event (or “trigger”) that would tend to indicate that a reduction in signal integrity will occur, examining a reinforcement action policy and system status to determine what reinforcement action to take, and performing the reinforcement action.
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Patent Agency Ranking
公开(公告)号：US10122392B2
公开(公告)日：2018-11-06
申请号：US15240549
申请日：2016-08-18
Applicant: Advanced Micro Devices, Inc.
Inventor： Milam Paraschou , Gerald R. Talbot , Dean E. Gonzales
Abstract: Systems, apparatuses, and methods for implementing a negative resistance circuit for bandwidth extension are disclosed. Within a feedback path of a differential signal path, capacitors are placed on the inputs and outputs of a fully differential amplifier connecting to the differential signal path. In one embodiment, a circuit includes a fully differential amplifier and four capacitors. A first capacitor is coupled between a first signal path and a non-inverting input terminal of the amplifier and a second capacitor is coupled between the first signal path and a non-inverting output terminal of the amplifier. A third capacitor is coupled between a second signal path and an inverting input terminal of the amplifier and a fourth capacitor is coupled between the second signal path and an inverting output terminal of the amplifier. The first and second signal paths carry a differential signal.
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公开(公告)号：US10749552B2
公开(公告)日：2020-08-18
申请号：US16140364
申请日：2018-09-24
Applicant: Advanced Micro Devices, Inc.
Inventor： Balwinder Singh , Milam Paraschou , Chad S. Gallun , Jeffrey Cooper , Dean E. Gonzales , Alushulla Jack Ambundo , Thomas H. Likens, III , Gerald R. Talbot
Abstract: Systems, apparatuses, and methods for performing efficient data transfer in a computing system are disclosed. A computing system includes multiple transmitters sending singled-ended data signals to multiple receivers. A termination voltage is generated and sent to the multiple receivers. The termination voltage is coupled to each of signal termination circuitry and signal sampling circuitry within each of the multiple receivers. Any change in the termination voltage affects the termination circuitry and affects comparisons performed by the sampling circuitry. Received signals are reconstructed at the receivers using the received signals, the signal termination circuitry and the signal sampling circuitry.
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公开(公告)号：US20200099406A1
公开(公告)日：2020-03-26
申请号：US16140364
申请日：2018-09-24
Applicant: Advanced Micro Devices, Inc.
Inventor： Balwinder Singh , Milam Paraschou , Chad S. Gallun , Jeffrey Cooper , Dean E. Gonzales , Alushulla Jack Ambundo , Thomas H. Likens, III , Gerald R. Talbot
Abstract: Systems, apparatuses, and methods for performing efficient data transfer in a computing system are disclosed. A computing system includes multiple transmitters sending singled-ended data signals to multiple receivers. A termination voltage is generated and sent to the multiple receivers. The termination voltage is coupled to each of signal termination circuitry and signal sampling circuitry within each of the multiple receivers. Any change in the termination voltage affects the termination circuitry and affects comparisons performed by the sampling circuitry. Received signals are reconstructed at the receivers using the received signals, the signal termination circuitry and the signal sampling circuitry.
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公开(公告)号：US10530325B1
公开(公告)日：2020-01-07
申请号：US16118054
申请日：2018-08-30
Applicant: Advanced Micro Devices, Inc. , ATI Technologies ULC
Inventor： Dean E. Gonzales , Xuan Chen , Jeffrey Cooper , Milam Paraschou
Abstract: Systems, apparatuses, and methods for performing efficient data transfer in a computing system are disclosed. A computing system includes multiple transmitters sending singled-ended data signals to multiple receivers. A receiver includes multiple series inductors moved from a signal path to sampling circuitry to a termination path used for impedance matching. The removed direct current (DC) resistances of the inductors in the signal path reduces signal attenuation. The termination path has alternating current (AC) reactances of the inductors, which provide a frequency-dependent termination impedance. This termination impedance provides a positive reflection coefficient for high operating frequencies, which boosts the input signal being received by the sampling circuitry.
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公开(公告)号：US20190286513A1
公开(公告)日：2019-09-19
申请号：US15921489
申请日：2018-03-14
Applicant: Advanced Micro Devices, Inc.
Inventor： David A. Roberts , Dean E. Gonzales
IPC: G06F11/07 , G06F13/376
Abstract: Techniques are provided herein for pre-emptively reinforcing one or more buses of a computing device against the effects of signal noise that could cause a reduction in signal integrity. The techniques generally include detecting an event (or “trigger”) that would tend to indicate that a reduction in signal integrity will occur, examining a reinforcement action policy and system status to determine what reinforcement action to take, and performing the reinforcement action.
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