公开(公告)号：US20220095377A1

公开(公告)日：2022-03-24

申请号：US17457358

申请日：2021-12-02

Applicant: Microchip Technology Incorporated

Inventor： Venkatraman Iyer ,  Dixon Chen ,  John Junling Zang ,  Michael Rentschler

IPC: H04W74/08

Abstract: Various embodiments relate to wired local area networks. A method may include detecting, at a node in a wired local area network, at least one event. A physical layer device of the network node is configured to implement a physical level collision avoidance (PLCA) sublayer. The at least one event may include at least one of an amount of data stored in a first-in-first-out (FIFO) buffer of the node being at least a threshold amount, and a received packet being a precision time protocol (PTP) packet incurring variable delay. The method may further include emulating a collision at the node in response to the at least one detected event.

公开(公告)号：US11876616B2

公开(公告)日：2024-01-16

申请号：US17815521

申请日：2022-07-27

Applicant: Microchip Technology Incorporated

Inventor： Michael Rentschler ,  Martin Miller ,  Thorben Link ,  Venkat Iyer

IPC: H04L1/00 ,  H04L41/0816 ,  H04L41/12 ,  H04L67/104 ,  H04L67/1061 ,  H04L69/323

CPC classification number: H04L1/0002 ,  H04L41/0816 ,  H04L41/12 ,  H04L67/1048 ,  H04L67/1051 ,  H04L67/1063 ,  H04L69/323

Abstract: Various examples relate to a wired local area network (WLAN) including a shared transmission medium. An apparatus includes a beacon counter and an operational mode controller. The beacon counter is operably coupled to a line of a shared transmission medium of a wired local area network. The beacon counter is to count beacon signals on the line and determine a beacon count over a predetermined time period, or a beacon rate of the beacon signals. The operational mode controller is to control the apparatus to take over operation as a master node of the wired local area network based, at least in part, on a maximum bus cycle length of bus cycles on the line and responsive to the beacon count or the beacon rate.

公开(公告)号：US20220368451A1

公开(公告)日：2022-11-17

申请号：US17815521

申请日：2022-07-27

Applicant: Microchip Technology Incorporated

Inventor： Michael Rentschler ,  Martin Miller ,  Thorben Link ,  Venkatraman Iyer

IPC: H04L1/00 ,  H04L41/0816 ,  H04L41/12 ,  H04L67/104 ,  H04L67/1061 ,  H04L69/323

Abstract: Various examples relate to a wired local area network (WLAN) including a shared transmission medium. An apparatus includes a beacon counter and an operational mode controller. The beacon counter is operably coupled to a line of a shared transmission medium of a wired local area network. The beacon counter is to count beacon signals on the line and determine a beacon count over a predetermined time period, or a beacon rate of the beacon signals. The operational mode controller is to control the apparatus to take over operation as a master node of the wired local area network based, at least in part, on a maximum bus cycle length of bus cycles on the line and responsive to the beacon count or the beacon rate.

公开(公告)号：US20200351119A1

公开(公告)日：2020-11-05

申请号：US16674999

申请日：2019-11-05

Applicant: Microchip Technology Incorporated

Inventor： Michael Rentschler ,  Venkat Iyer

IPC: H04L12/40 ,  H04L12/815 ,  H04L12/403

Abstract: Disclosed embodiments relate, generally, to traffic shaping at a network segment having a shared bus. Some embodiments relate to performing aspects of the traffic shaping at a physical layer device. In some cases, transmit timeslot signaling may be tuned at a physical layer device to create transmit timeslots that are aligned with the traffic shaping profile.

公开(公告)号：US20220013149A1

公开(公告)日：2022-01-13

申请号：US17305561

申请日：2021-07-09

Applicant: Microchip Technology Incorporated

Inventor： Michael Rentschler ,  Thorben Link

IPC: G11B27/10 ,  H04N21/8547 ,  H04N21/81 ,  H03K19/20

Abstract: Synchronization for audio systems and related systems and circuitry are disclosed. An audio system includes a word select line of a digital audio interface, a serial clock line of the digital audio interface, and hardware circuitry. The hardware circuitry is configured to provide a word select signal to the word select line and a serial clock signal to the serial clock line. The word select signal is configured to indicate channels of a serial data signal provided to a serial data line of the digital audio interface. The hardware circuitry is also configured to synchronize the serial clock signal to a clock reference stream of an audio stream communicated via a network interface.

公开(公告)号：US11050501B2

公开(公告)日：2021-06-29

申请号：US16440775

申请日：2019-06-13

Applicant: Microchip Technology Incorporated

Inventor： Michael Rentschler

IPC: H04J3/06 ,  H04L12/26

Abstract: A microcontroller includes a packet matching circuit, a hardware timer circuit, and a processor. The packet matching circuit is configured to match contents of received packets to the microcontroller and identify whether a packet has been received. The hardware timer circuit is configured to provide a synchronization timestamp based on a signal from the packet matching circuit that a synchronization packet has been matched, and provide a follow-up timestamp based on a signal from the packet matching circuit that a follow-up packet has been matched after reception of the synchronization packet. The processor is configured to adjust a clock base to determine a synchronized clock base based upon the synchronization timestamp and upon the follow-up timestamp.

公开(公告)号：US20200343993A1

公开(公告)日：2020-10-29

申请号：US16749695

申请日：2020-01-22

Applicant: Microchip Technology Incorporated

Inventor： Michael Rentschler ,  Martin Miller ,  Thorben Link ,  Venkat Iyer

IPC: H04L1/00 ,  H04L12/24 ,  H04L29/08

Abstract: Various embodiments relate to a wired local area network (WLAN) including a shared transmission medium (e.g., a 10SPE network). A method may include detecting an event in a WLAN including physical level collision avoidance (PLCA). The method may also include disabling a beacon of a first node operating as a master of the WLAN in response to the event. Further, the method may include enabling a second node to operate as the master of the WLAN.

公开(公告)号：US20190386763A1

公开(公告)日：2019-12-19

申请号：US16440775

申请日：2019-06-13

Applicant: Microchip Technology Incorporated

Inventor： Michael Rentschler

IPC: H04J3/06 ,  H04L12/26

Abstract: A microcontroller includes a packet matching circuit, a hardware timer circuit, and a processor. The packet matching circuit is configured to match contents of received packets to the microcontroller and identify whether a packet has been received. The hardware timer circuit is configured to provide a synchronization timestamp based on a signal from the packet matching circuit that a synchronization packet has been matched, and provide a follow-up timestamp based on a signal from the packet matching circuit that a follow-up packet has been matched after reception of the synchronization packet. The processor is configured to adjust a clock base to determine a synchronized clock base based upon the synchronization timestamp and upon the follow-up timestamp.

公开(公告)号：US12062385B2

公开(公告)日：2024-08-13

申请号：US17305561

申请日：2021-07-09

Applicant: Microchip Technology Incorporated

Inventor： Michael Rentschler ,  Thorben Link

IPC: G11B27/10 ,  G06F1/04 ,  G06F1/12 ,  H03K19/20 ,  H04N21/81 ,  H04N21/8547

CPC classification number: G11B27/10 ,  G06F1/04 ,  G06F1/12 ,  H03K19/20 ,  H04N21/8106 ,  H04N21/8547

Abstract: Synchronization for audio systems and related systems and circuitry are disclosed. An audio system includes a word select line of a digital audio interface, a serial clock line of the digital audio interface, and hardware circuitry. The hardware circuitry is configured to provide a word select signal to the word select line and a serial clock signal to the serial clock line. The word select signal is configured to indicate channels of a serial data signal provided to a serial data line of the digital audio interface. The hardware circuitry is also configured to synchronize the serial clock signal to a clock reference stream of an audio stream communicated via a network interface.

公开(公告)号：US11197322B2

公开(公告)日：2021-12-07

申请号：US16843648

申请日：2020-04-08

Applicant: Microchip Technology Incorporated

Inventor： Venkatraman Iyer ,  Dixon Chen ,  John Junling Zang ,  Michael Rentschler

IPC: H04W74/08

Abstract: Various embodiments relate to wired local area networks. A method may include detecting, at a node in a wired local area network, at least one event. A physical layer device of the network node is configured to implement a physical level collision avoidance (PLCA) sublayer. The at least one event may include at least one of an amount of data stored in a first-in-first-out (FIFO) buffer of the node being at least a threshold amount, and a received packet being a precision time protocol (PTP) packet incurring variable delay. The method may further include emulating a collision at the node in response to the at least one detected event.