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Circuit structure suitable for half-duplex bus signal direction control and control method

A bus signal and direction control technology, applied in electrical digital data processing, instruments, etc., can solve the problem of inability to realize real-time switching of high-speed signal lines, and achieve the effect of avoiding system communication errors

Pending Publication Date: 2021-08-24
VISION MICROSYST SHANGHAI
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  • Abstract
  • Description
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Problems solved by technology

This prior art uses relays to switch the signal direction, but the disadvantage is that it cannot realize the real-time switching of the signal direction of the high-speed signal line

Method used

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  • Circuit structure suitable for half-duplex bus signal direction control and control method

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0026] like figure 1 As shown, the present invention provides a circuit structure suitable for half-duplex bus signal direction control, including: a control module, an ADC module, a bus PHY module, a high-speed analog switch module and fault injection or other bus physical layer application modules.

[0027] The control module receives the PHY signal of the bus PHY module, analyzes the bus signal according to the PHY signal, and judges the communication direction of the bus signal according to the bus ...

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Abstract

The invention provides a circuit structure suitable for half-duplex bus signal direction control. The circuit structure comprises a control module, an ADC module, a bus PHY module and a high-speed analog switch module. The control module receives a PHY signal of the bus PHY module, analyzes a bus signal according to the PHY signal, and judges the communication direction of the bus signal according to a bus protocol; the control module sends a switching command to control the high-speed analog switch module; the ADC module receives an electrical signal of the bus; the control module is connected with the ADC module through a bus. The invention further provides a control method suitable for half-duplex bus signal direction control. According to the invention, the high-speed analog switch module is adopted, so that timely switching of signal directions is realized, and system communication errors caused by the fact that ACK signals and the like are not returned in time are avoided.

Description

technical field [0001] The invention relates to the technical field of half-duplex data transmission, in particular to a circuit structure and control method suitable for half-duplex bus signal direction control. Background technique [0002] Half-duplex (Half Duplex) data transmission means that data can be transmitted in both directions of a signal carrier, but cannot be transmitted at the same time. For example, using technology with half-duplex transmission on a LAN, a workstation can send data on the wire and then immediately receive data on the wire from the direction the data was just transmitted. Half-duplex In any moment of the communication process, information can be transmitted from A to B, and from B to A, but there can only be transmission in one direction. When using the half-duplex mode, the transmitter and receiver at each end of the communication system are switched to the communication line through the receiving / transmitting switch to switch the direction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/10G06F13/42
CPCG06F13/105G06F13/4221
Inventor 武修文
Owner VISION MICROSYST SHANGHAI
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