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Interface circuit and method for turning on output driver of interface circuit

An output driver, interface circuit technology, applied in the direction of logic circuit connection/interface layout, instruments, electrical components, etc., can solve the problems of current and voltage influence, damage to communication devices or electrical connections of communication devices, etc.

Inactive Publication Date: 2016-02-24
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the prevailing current and voltage in the common current loop can be influenced by the two communicating devices
In particular, when one of the communication devices is out of voltage or malfunctions, it can lead to an undesired circuit condition that can destroy one of the communication devices or the electrical connection between the communication devices

Method used

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  • Interface circuit and method for turning on output driver of interface circuit
  • Interface circuit and method for turning on output driver of interface circuit
  • Interface circuit and method for turning on output driver of interface circuit

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Embodiment Construction

[0023] Before the exemplary embodiments are explained below with reference to the figures, it should be noted that identical or functionally identical elements are provided with the same or similar reference numerals and that a repeated description of the elements is omitted. Therefore, descriptions of elements with the same or similar reference numerals may be substituted for each other. Furthermore, optional features of various embodiments may be combined with each other or may be substituted for each other.

[0024] figure 1 and figure 2 The communication between the two interfaces 50 and 100 is schematically illustrated as a circuit diagram. here, figure 1 for normal operating mode, while figure 2 in failure mode. The interface 100 is configured as an output interface and is thus used to transmit data to the interface 50 configured as an input interface. Therefore, one-way communication is performed from the interface 100 to the interface 50 . In principle, howeve...

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PUM

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Abstract

The interface circuit (300; 400; 600; 700) comprises: an interface connector (130), a voltage detection device (144), an output driver (120) and an enable logic. The interface connector is configured to be connected to an interface line (80) for communication with a communication partner (50, 56). The voltage detection device is configured to detect the voltage applied to the interface connector. The output driver is configured to apply signals to the interface connector for communication. The enable logic is configured to generate an enable signal for the output driver (120) based on an evaluation signal issued by the voltage detection device, wherein when the evaluation signal is known to be applied to the interface connector (130) When the voltage meets the given condition, the enable signal turns on the output driver. Also described is a communication system, a method for enabling an output driver (120) of an interface circuit, and a method for enabling an output operating mode of an interface.

Description

technical field [0001] Embodiments of the present invention provide an interface circuit for communicating with a communication partner, which may be used, for example, to interconnect various electronic assemblies or components. Other embodiments of the present invention provide a communication system, a method for enabling an output driver of an interface circuit, and a method for enabling an output operating mode of an interface. Background technique [0002] An electronic system usually comprises a number of assemblies, subunits or components that must communicate with each other so that the electronic system can fulfill its specific purpose. Firstly, if the components to be connected are digital circuits, a bus system can be used, for example. An example of such a bus system is the so-called "Serial Peripheral Interface" (SPI) developed by Motorola. SPI uses a synchronous serial data bus through which digital circuits can be connected to each other according to the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K19/0175
CPCG06F13/4291G06F13/4072H04L69/32G11C16/10
Inventor 克劳斯·巴克纳克莱门斯·科迪克克里斯蒂安·乌恩霍尔德
Owner INFINEON TECH AG