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A single bus transmission device based on differential signal

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 a long distance, and achieve the effect of long-distance reliable transmission, low cost, and low interference

Active Publication Date: 2016-08-17
HEFEI STAROT INFOTECH CO LTD
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Problems solved by technology

[0003] 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

Method used

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  • A single bus transmission device based on differential signal
  • A single bus transmission device based on differential signal

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Embodiment Construction

[0014] In order to have a further understanding and understanding of the structural features and the achieved effects of the present invention, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0015] Such as 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 RX...

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Abstract

The invention relates to a single bus transmission device based on differential signals, which solves the defect that a single IO bus cannot perform long-distance transmission based on TTL level signals compared with the prior art. The TTL input and output circuit of the present invention is used to convert a standard TTL level input and output signal into input and output signals, the input and output interlock control circuit is used for interlocking between the input signal and the output signal, and the control chip is used for input and output Mutual conversion between single-ended and differential signals; the IO input and output ports are connected to the input and output interlock control circuit through the TTL input and output circuit, and the input and output interlock control circuit is connected to the differential input and output through the control chip The mouth is connected. The invention realizes long-distance reliable transmission with standard TTL level, realizes high-speed signal transmission with low cost and low interference, and can realize input and output functions at the same time.

Description

technical field [0001] 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. Background technique [0002] 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 differential lines ; The high...

Claims

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Application Information

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