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Semiconductor data processing device, time-triggered communication system, and communication system

A data processing device, time-triggered technology, applied in electrical digital data processing, program startup/switching, instruments, etc.

Active Publication Date: 2013-07-10
RENESAS ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is inappropriate to use a general-purpose timer included in a microcomputer as a local time timer

Method used

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  • Semiconductor data processing device, time-triggered communication system, and communication system
  • Semiconductor data processing device, time-triggered communication system, and communication system
  • Semiconductor data processing device, time-triggered communication system, and communication system

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Embodiment Construction

[0041] 1. Overview of the embodiment

[0042]First, the configuration of a semiconductor data processing device according to a typical embodiment of the invention disclosed in this application is described.

[0043] A semiconductor data processing device in each of a plurality of network-coupled electronic control devices incorporated into the time-triggered communication system is equipped with a central processing unit, a communication control circuit, and an interrupt control circuit. The communication control circuit includes a local time timer used in time-triggered communication, and sends out a timer interrupt request for time-triggered communication according to the time count of the local time timer. When the timer interrupt request of time-triggered communication is received, the interrupt control circuit controls so that the central processing unit delays the predetermined reserved time to start the interrupt processing to be performed in response to the timer inter...

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Abstract

The variation of the timing of starting interrupt processing in response to a timer interrupt request is reduced regardless of the condition of processing of other interrupts. A semiconductor data processing device incorporated in each of plural electronic control devices coupled to a network for time-triggered communication system is provided with a central processing unit, a communication control circuit and an interrupt control circuit. The communication control circuit has a local time timer for use in time-triggered communication and issues, based on time counting by the local time timer, a timer interrupt request for time-triggered communication. When a timer interrupt request for time-triggered communication is received, the interrupt control circuit performs control to cause the central processing unit to delay, by a predetermined reservation time, starting the interrupt processing to be performed in response to the timer interrupt request.

Description

[0001] Cross Reference Related Applications [0002] The disclosure of Japanese Patent Application No. 2011-241114 filed on Nov. 2, 2011 including specification, drawings and abstract is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to an interrupt control technique using a local time timer included in a semiconductor data processing device applied to a terminal coupled to a network for time-triggered communication in which the communication is performed synchronously with the common time used in the network, and to A technology related to a time-triggered communication system that can be effectively applied to, for example, a communication system included in an electronic control device for a vehicle. Background technique [0004] In a communication system that exchanges frames between a plurality of terminals via a transmission path, especially in a communication system applied to communication between electronic c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/48
CPCG06F13/24
Inventor 藤井诚
Owner RENESAS ELECTRONICS CORP
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