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Differential signal based single bus transmission device

A differential signal and transmission device technology, which is applied in the field of TTL signal and differential signal conversion, can solve the problem that a single IO bus cannot be transmitted over long distances, achieve long-distance reliable transmission, reduce resource occupation, and reduce the number of cables.

Active Publication Date: 2014-03-19
HEFEI STAROT INFOTECH CO LTD
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to solve the defect that the single IO bus in the prior art cannot carry out long-distance transmission based on TTL level signals, and provide a single-bus transmission device based on differential signals to solve the above problems

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  • Differential signal based single bus transmission device
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Embodiment Construction

[0020] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0021] like figure 1 As shown, a differential signal-based single-bus transmission device according to the present invention includes an IO input and output port 1 and a differential input and output port 5 . The IO input and output port 1 is the bus interface of the TTL circuit. The current single IO bus, such as maxim's 1-wire bus, cannot carry out long-distance transmission. The differential input and output port 5 is the input and output port of the differential signal. It also includes a TTL input and output circuit 2, an input and output interlock control circuit 3 and a control chip 4. The TTL input and output circuit 2 converts a standard TTL level input and output signal into two signals, which are input TXD and output RXD r...

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Abstract

The invention relates to a differential signal based single bus transmission device, which solves a defect that a single IO bus can not perform remote transmission based on TTL level signals compared with the prior art. According to the differential signal based single bus transmission device, a TTL input / output circuit is used for converting input / output signals of a standard TTL level into input signals and output signals; an input / output interlocking control circuit is used for carrying out interlocking between the input signals and the output signals; a control chip is used for carrying out conversion between a single end of the input / output signals and differential signals; an IO input / output port is connected with the input / out interlocking control circuit through the TTL input / output circuit, and the input / out interlocking control circuit is connected with a differential input / output port through the control chip. The differential signal based single bus transmission device realizes remote reliable transmission of the standard TTL level, realizes high-speed signal transmission with a low cost and low interferences, and can realize input and output functions simultaneously.

Description

[0001] technical field [0002] The invention relates to the technical field of TTL signal and differential signal conversion, in particular to a differential signal-based single-bus transmission device. [0003] Background technique [0004] Nowadays, TTL level is often used in circuit structure technology. Besides its own advantages, TTL level also has many defects. For example, ordinary TTL level signal cannot be transmitted reliably over long distances. And the method for solving this kind of problem mainly contains in the prior art at present: 1, TTL level is converted into higher level signal; 2, TTL level is converted into differential signal; 3, TTL level is converted into light signal. However, higher level signals cannot achieve high-speed signal transmission and have high interference with surrounding circuits; differential signals can only achieve unidirectional input or output or require two IOs to control, and realize input and output on a pair of differentia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 代法刚
Owner HEFEI STAROT INFOTECH CO LTD
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