CN104102606A - Method for transmitting PCI (peripheral component interconnect)-EXPRESS signals over long distances - Google Patents
Method for transmitting PCI (peripheral component interconnect)-EXPRESS signals over long distances Download PDFInfo
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- CN104102606A CN104102606A CN201410337414.3A CN201410337414A CN104102606A CN 104102606 A CN104102606 A CN 104102606A CN 201410337414 A CN201410337414 A CN 201410337414A CN 104102606 A CN104102606 A CN 104102606A
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Abstract
The invention discloses a method for transmitting PCI (peripheral component interconnect)-EXPRESS signals over long distances. The method includes steps of erecting high-speed differential signal cables between a system A and a system B, and mounting at least one relay signal enhancement board on the high-speed differential signal cables; pre-emphasizing or equalizing the PCI-Express signals in the system A by the aid of a signal conditioning circuit, then transmitting the signals into the relay signal enhancement boards via the corresponding high-speed differential signal cable, conditioning the signals, then transmitting the signals to the system B via the corresponding high-speed differential signal cable, pre-emphasizing or equalizing the signals by the aid of a signal conditioning circuit and then transmitting the signals into a chip. Compared with the prior art, the method has the advantages that the data transmission reliability can be effectively improved, PCI-Express interface communication among devices can be implemented under the conditions of long transmission distances and severe environments, and interference due to communication among the devices can be reduced.
Description
Technical field
The present invention relates to signal transmission technology field, specifically a kind of method of PCI-EXPRESS signal long-distance transmission.
Background technology
PCI-Express is the high speed bus interface of new generation that replaces PCI, is that point-to-point high speed serialization connects bus.PCI Express specification is connected to 32 passages from 1 passage and connects, and has very strong retractility, to meet the different system equipment demand different to data transfer bandwidth.PCI-Express interface has the specifications of several different sizes according to bus bit wide difference: X1, X2, and X4, X8, X12, X16 and X32, the transmission speed of X1 interface is 250MB/S, X16 interface can provide the bandwidth of 5GB/S.Three kinds of be respectively+3.3V of voltage, 3.3Vaux that PCI Express supports and+12V.In addition, PCI-Express also supports Advanced Program Zoom, supports hot plug, and supported data synchronous transmission, for optimized transmission data are carried out bandwidth optimization.PCI Express mode of operation is the mode of a kind of being referred to as " transmission of voltage difference formula ".Carry out by this way data transmission, can support high running frequency.
PCI Express can significantly improve the bandwidth between central processing unit (CPU) and graphic process unit (GPU).It more ideally enjoys the image effect of movie theatre level can to Video Applications person, and obtains seamless multimedia experience.At present, PCI-Express interface is widely used on industry control, reinforced notebook computer product, high speed signal interface generally all adopts PCI-Express bus to communicate, but this interface is higher to semaphore request, long haul communication between distinct device easily produces signal and disturbs, and affects the laser propagation effect of signal.
Summary of the invention
Technical assignment of the present invention is to provide a kind of method of PCI-EXPRESS signal long-distance transmission.
Technical assignment of the present invention is realized in the following manner, and the method step is as follows:
Between system A and system B, set up high-speed differential signal cable, and at least one repeating signal enhancing board is installed on high-speed differential signal cable; PCI-Express signal in system A is after signal conditioning circuit carries out signal pre-emphasis or equilibrium treatment, enter high-speed differential signal cable, arrive repeating signal and strengthen board, carry out signal condition, and then arrive system B by high-speed differential signal cable, after carrying out signal pre-emphasis or equilibrium treatment, signal conditioning circuit enters chip.
Described signal conditioning circuit adopts PI2EQX4401D to build circuit.
Described high-speed differential signal cable adopts PCIE cable cable, and the two ends of cable are equipped with high-speed differential signal connector.
Described repeating signal strengthens board and adopts PI2EQX4401D to build circuit.
The method of a kind of PCI-EXPRESS signal long-distance transmission of the present invention compared to the prior art, effectively improve the reliability of transmission data, distant in transmission range, in the more severe situation of environment, realize the PCI-Express interface communication of equipment room, reduce the interference that between distinct device, communication produces, for the reliability that improves data long distance communication, have very large using value.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of schematic flow sheet of method of PCI-EXPRESS signal long-distance transmission.
Embodiment
Embodiment 1:
Between system A and system B, set up high-speed differential signal cable, and a repeating signal enhancing board is installed on high-speed differential signal cable; PCI-Express signal in system A is after signal conditioning circuit carries out the processing of signal pre-emphasis, enter high-speed differential signal cable, arrive repeating signal and strengthen board, carry out signal condition, and then arrive system B by high-speed differential signal cable, after carrying out the processing of signal pre-emphasis, signal conditioning circuit enters chip.
Embodiment 2:
Between system A and system B, set up high-speed differential signal cable, and two repeating signals enhancing boards are installed on high-speed differential signal cable; PCI-Express signal in system A is after signal conditioning circuit carries out signal equalization processing, enter high-speed differential signal cable, arrive two repeating signals and strengthen board, carry out signal condition, and then arrive system B by high-speed differential signal cable, after carrying out signal equalization processing, signal conditioning circuit enters chip.
Embodiment 3:
Between system A and system B, set up high-speed differential signal cable, and three repeating signals enhancing boards are installed on high-speed differential signal cable; PCI-Express signal in system A is after signal conditioning circuit carries out the processing of signal pre-emphasis, enter high-speed differential signal cable, arrive three repeating signals and strengthen board, carry out signal condition, and then arrive system B by high-speed differential signal cable, after carrying out signal equalization processing, signal conditioning circuit enters chip.
In above-described embodiment, signal conditioning circuit adopts the chip PI2EQX4401D of Pricom company to build circuit.This chip can carry out pre-emphasis or equilibrium to the PCI-Express x1 signal of 2.5Gbps, has in addition the automatic recognition detection function of clock signal and buffer signal.Concrete configuration need to arrange according to the length of signal transmission, such as equilibrium setting can be chosen 0db, 1.5db, 2.5db, 3.5db, 4.5db, 5.5db, 6.5db to 7.5db, signal swing can be set in 0.8x, 1.0x, 1.2x to 1.4x, postemphasis and can be set to 0db ,-2.5db ,-3.5db and-4.5db etc.
High-speed differential signal cable adopts the PCIE cable cable of molex, and single cable once transmits that length is the longest can reach 7 meters far away, and the two ends of cable are equipped with high-speed differential signal connector.
Repeating signal strengthens board and adopts the chip PI2EQX4401D of Pricom company to build circuit, by repeating signal, increases the distance that circuit can further increase signal transmission.
This technology can be applicable in notebook project, for the long haul communication between host computer PC I-Express interface and equipment PCI-Express interface.
By embodiment above, described those skilled in the art can be easy to realize the present invention.But should be appreciated that the present invention is not limited to above-mentioned several embodiments.On the basis of disclosed embodiment, described those skilled in the art can the different technical characterictic of combination in any, thereby realizes different technical schemes.
Claims (4)
1. a method for PCI-EXPRESS signal long-distance transmission, is characterized in that, the method step is as follows:
Between system A and system B, set up high-speed differential signal cable, and at least one repeating signal enhancing board is installed on high-speed differential signal cable; PCI-Express signal in system A is after signal conditioning circuit carries out signal pre-emphasis or equilibrium treatment, enter high-speed differential signal cable, arrive repeating signal and strengthen board, carry out signal condition, and then arrive system B by high-speed differential signal cable, after carrying out signal pre-emphasis or equilibrium treatment, signal conditioning circuit enters chip.
2. the method for a kind of PCI-EXPRESS signal long-distance transmission according to claim 1, is characterized in that, described signal conditioning circuit adopts PI2EQX4401D to build circuit.
3. the method for a kind of PCI-EXPRESS signal long-distance transmission according to claim 1, is characterized in that, described high-speed differential signal cable adopts PCIE cable cable, and the two ends of cable are equipped with high-speed differential signal connector.
4. the method for a kind of PCI-EXPRESS signal long-distance transmission according to claim 1, is characterized in that, described repeating signal strengthens board and adopts PI2EQX4401D to build circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410337414.3A CN104102606A (en) | 2014-07-16 | 2014-07-16 | Method for transmitting PCI (peripheral component interconnect)-EXPRESS signals over long distances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410337414.3A CN104102606A (en) | 2014-07-16 | 2014-07-16 | Method for transmitting PCI (peripheral component interconnect)-EXPRESS signals over long distances |
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| CN104102606A true CN104102606A (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410337414.3A Pending CN104102606A (en) | 2014-07-16 | 2014-07-16 | Method for transmitting PCI (peripheral component interconnect)-EXPRESS signals over long distances |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109240967A (en) * | 2018-09-19 | 2019-01-18 | 郑州云海信息技术有限公司 | A kind of method and controller of parameter configuration |
| CN110278032A (en) * | 2019-06-11 | 2019-09-24 | 中国科学技术大学 | A kind of PCIe data transmitting device and method based on optical fiber |
| CN113849444A (en) * | 2021-10-09 | 2021-12-28 | 深钛智能科技(苏州)有限公司 | PCI bus system for industrial control system |
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| CN101055304A (en) * | 2007-06-04 | 2007-10-17 | 杭州华三通信技术有限公司 | Circuit connection state detection system and method |
| US20080225715A1 (en) * | 2007-03-12 | 2008-09-18 | Robert Plamondon | Systems and methods of providing proxy-based quality of service |
| CN101599927A (en) * | 2009-07-17 | 2009-12-09 | 威盛电子股份有限公司 | High-speed serial link system |
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2014
- 2014-07-16 CN CN201410337414.3A patent/CN104102606A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080225715A1 (en) * | 2007-03-12 | 2008-09-18 | Robert Plamondon | Systems and methods of providing proxy-based quality of service |
| CN101055304A (en) * | 2007-06-04 | 2007-10-17 | 杭州华三通信技术有限公司 | Circuit connection state detection system and method |
| CN101599927A (en) * | 2009-07-17 | 2009-12-09 | 威盛电子股份有限公司 | High-speed serial link system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109240967A (en) * | 2018-09-19 | 2019-01-18 | 郑州云海信息技术有限公司 | A kind of method and controller of parameter configuration |
| CN110278032A (en) * | 2019-06-11 | 2019-09-24 | 中国科学技术大学 | A kind of PCIe data transmitting device and method based on optical fiber |
| CN110278032B (en) * | 2019-06-11 | 2021-03-09 | 中国科学技术大学 | PCIe data transmission device and method based on optical fiber |
| CN113849444A (en) * | 2021-10-09 | 2021-12-28 | 深钛智能科技(苏州)有限公司 | PCI bus system for industrial control system |
| CN113849444B (en) * | 2021-10-09 | 2023-09-01 | 深钛智能科技(苏州)有限公司 | PCI bus system for industrial control system |
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Application publication date: 20141015 |
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