Interrupt handling method and apparatus for slow peripherals

    公开(公告)号:US12105550B2

    公开(公告)日:2024-10-01

    申请号:US16995852

    申请日:2020-08-18

    CPC classification number: G06F1/12 G06F13/24

    Abstract: Disclosed examples include interrupt handling circuitry and methods for managing interrupts of a fast clock domain circuit operated according to a first clock signal by a slow clock domain circuit operated according to a second clock signal in which an interrupt generator circuit generates an interrupt input signal synchronized to the second clock signal, and an interrupt clear circuit selectively resets the interrupt generator circuit in response to an acknowledgment signal from the first circuit asynchronously with respect to the second clock signal.

    INTEGRATED CIRCUITS, METHODS AND INTERFACE CIRCUITRY TO SYNCHRONIZE DATA TRANSFER BETWEEN HIGH AND LOW SPEED CLOCK DOMAINS

    公开(公告)号:US20180182440A1

    公开(公告)日:2018-06-28

    申请号:US15389814

    申请日:2016-12-23

    CPC classification number: G11C7/222 H03K21/00

    Abstract: Disclosed examples include interface circuits to transfer data between a first register in a fast clock domain and a second register in a slow clock domain, including a resettable synchronizer to provide a synchronized start signal synchronized to a slow clock signal to initiate a write from the first register to the second register according to a write request signal, a pulse generator circuit to provide a write enable pulse signal according to the synchronized start signal, a write control circuit to selectively connect an output of the first register to an input of the second register to write data from the first register to the second register according to the write enable pulse signal, and a dual flip-flop to provide a reset signal synchronized to a fast clock signal according to the write request signal to clear any prior pending write request and begin a new write operation.

    Unified Programmable Interface for Real-Time Ethernet
    3.
    发明申请
    Unified Programmable Interface for Real-Time Ethernet 有权
    用于实时以太网的统一可编程接口

    公开(公告)号:US20130177026A1

    公开(公告)日:2013-07-11

    申请号:US13734699

    申请日:2013-01-04

    Abstract: This invention is a low level programmable logic that can communicate with Media Independent Interface (MII) (Ethernet) interface in a highly configurable manner under the control of a CPU. This invention is highly configurable for various existing and new Ethernet based communication standards, programmable in an easy to learn assembly language, low power and high performance

    Abstract translation: 本发明是一种低级可编程逻辑,可在CPU的控制下以高度可配置的方式与媒体独立接口(MII)(以太网)接口进行通信。 本发明高度可配置用于各种现有和新的基于以太网的通信标准,可以易于学习的汇编语言编程,低功耗和高性能

    INTERRUPT HANDLING METHOD AND APPARATUS FOR SLOW PERIPHERALS

    公开(公告)号:US20240411341A1

    公开(公告)日:2024-12-12

    申请号:US18804364

    申请日:2024-08-14

    Abstract: Disclosed examples include interrupt handling circuitry and methods for managing interrupts of a fast clock domain circuit operated according to a first clock signal by a slow clock domain circuit operated according to a second clock signal in which an interrupt generator circuit generates an interrupt input signal synchronized to the second clock signal, and an interrupt clear circuit selectively resets the interrupt generator circuit in response to an acknowledgment signal from the first circuit asynchronously with respect to the second clock signal.

    INTERRUPT HANDLING METHOD AND APPARATUS FOR SLOW PERIPHERALS

    公开(公告)号:US20180217630A1

    公开(公告)日:2018-08-02

    申请号:US15420267

    申请日:2017-01-31

    Abstract: Disclosed examples include interrupt handling circuitry and methods for managing interrupts of a fast clock domain circuit operated according to a first clock signal by a slow clock domain circuit operated according to a second clock signal in which an interrupt generator circuit generates an interrupt input signal synchronized to the second clock signal, and an interrupt clear circuit selectively resets the interrupt generator circuit in response to an acknowledgment signal from the first circuit asynchronously with respect to the second clock signal.

    INTERRUPT HANDLING METHOD AND APPARATUS FOR SLOW PERIPHERALS

    公开(公告)号:US20200379505A1

    公开(公告)日:2020-12-03

    申请号:US16995852

    申请日:2020-08-18

    Abstract: Disclosed examples include interrupt handling circuitry and methods for managing interrupts of a fast clock domain circuit operated according to a first clock signal by a slow clock domain circuit operated according to a second clock signal in which an interrupt generator circuit generates an interrupt input signal synchronized to the second clock signal, and an interrupt clear circuit selectively resets the interrupt generator circuit in response to an acknowledgment signal from the first circuit asynchronously with respect to the second clock signal.

    PACKET PROCESSORS AND PACKET FILTER PROCESSES, CIRCUITS, DEVICES, AND SYSTEMS
    7.
    发明申请
    PACKET PROCESSORS AND PACKET FILTER PROCESSES, CIRCUITS, DEVICES, AND SYSTEMS 审中-公开
    分组处理器和分组过滤器,电路,设备和系统

    公开(公告)号:US20140105022A1

    公开(公告)日:2014-04-17

    申请号:US14105493

    申请日:2013-12-13

    Abstract: A packet filter (2500) for incoming communications packets includes extractor circuitry (2510) operable to extract data from a packet, and packet processor circuitry (2520) operable to concurrently mask (3010) the packet data from the extractor circuitry (2510), perform an arithmetic/logic operation (3020) on the packet to supply a packet drop signal (DROP), and perform a conditional limit operation and a conditional jump operation (3030).

    Abstract translation: 用于输入通信分组的分组过滤器(2500)包括可操作以从分组提取数据的提取器电路(2510)和可操作以同时从提取器电路(2510)屏蔽(3010)分组数据的分组处理器电路(2520),执行 在分组上提供算术/逻辑运算(3020)以提供分组丢弃信号(DROP),并执行条件限制操作和条件跳转操作(3030)。

    Integrated circuits, methods and interface circuitry to synchronize data transfer between high and low speed clock domains

    公开(公告)号:US10014041B1

    公开(公告)日:2018-07-03

    申请号:US15389814

    申请日:2016-12-23

    Abstract: Disclosed examples include interface circuits to transfer data between a first register in a fast clock domain and a second register in a slow clock domain, including a resettable synchronizer to provide a synchronized start signal synchronized to a slow clock signal to initiate a write from the first register to the second register according to a write request signal, a pulse generator circuit to provide a write enable pulse signal according to the synchronized start signal, a write control circuit to selectively connect an output of the first register to an input of the second register to write data from the first register to the second register according to the write enable pulse signal, and a dual flip-flop to provide a reset signal synchronized to a fast clock signal according to the write request signal to clear any prior pending write request and begin a new write operation.

    Unified programmable interface for real-time Ethernet
    9.
    发明授权
    Unified programmable interface for real-time Ethernet 有权
    用于实时以太网的统一可编程接口

    公开(公告)号:US08902922B2

    公开(公告)日:2014-12-02

    申请号:US13734699

    申请日:2013-01-04

    Abstract: This invention is a low level programmable logic that can communicate with Media Independent Interface (MII) (Ethernet) interface in a highly configurable manner under the control of a CPU. This invention is highly configurable for various existing and new Ethernet based communication standards, programmable in an easy to learn assembly language, low power and high performance.

    Abstract translation: 本发明是一种低级可编程逻辑,可在CPU的控制下以高度可配置的方式与媒体独立接口(MII)(以太网)接口进行通信。 本发明高度可配置用于各种现有和新的基于以太网的通信标准,可以易于学习的汇编语言编程,低功耗和高性能。

    Interrupt handling method and apparatus for slow peripherals

    公开(公告)号:US10788853B2

    公开(公告)日:2020-09-29

    申请号:US15420267

    申请日:2017-01-31

    Abstract: Disclosed examples include interrupt handling circuitry and methods for managing interrupts of a fast clock domain circuit operated according to a first clock signal by a slow clock domain circuit operated according to a second clock signal in which an interrupt generator circuit generates an interrupt input signal synchronized to the second clock signal, and an interrupt clear circuit selectively resets the interrupt generator circuit in response to an acknowledgment signal from the first circuit asynchronously with respect to the second clock signal.

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