CN109766295B - High-speed data unidirectional transmission method and device - Google Patents
High-speed data unidirectional transmission method and device Download PDFInfo
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- CN109766295B CN109766295B CN201811649106.9A CN201811649106A CN109766295B CN 109766295 B CN109766295 B CN 109766295B CN 201811649106 A CN201811649106 A CN 201811649106A CN 109766295 B CN109766295 B CN 109766295B
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Abstract
The embodiment of the invention discloses a high-speed data unidirectional transmission method, which is based on SATA and optical fiber technology and comprises the following steps: the SATA and the optical fiber interface are connected through a conditioning circuit; at the SATA Device end, adopting forced entry Ready to enable the SATA Device to directly enter a data receiving state; and a self-loop is adopted at the SATA Host end to realize bidirectional data verification. The device also comprises a high-speed data unidirectional transmission device. A self-loop mode is adopted at the SATA Host end, bidirectional data verification is achieved, and the problem that in data one-way transmission application, an interaction channel is blocked and protocol authentication needs to be solved is solved. At the SATA Device end, the SATA Device equipment directly enters a data receiving state by adopting a forced entry Ready mode, and the problem that the SATA Device equipment cannot be activated and cannot transmit data because an OOB signal is a discontinuous burst pulse signal and cannot pass through an optical fiber module is solved.
Description
Technical Field
The invention relates to the technical field of data transmission, in particular to a high-speed data unidirectional transmission method and a high-speed data unidirectional transmission device.
Background
At present, data is transmitted in a one-way mode generally by adopting a serial port and optical pair tubes, and the data transmission rate is low and the stability is poor. SATA (Serial Advanced Technology Attachment) is a Serial hardware driver interface based on industry standards. SATA adopts gigabit technology and 8b/10b coded high-speed differential signals, and the rate can reach 3Gb (SATA 2.0) or 6Gb (SATA 3.0). Optical fiber communication is a communication mode in which light waves are used as information carriers and optical fibers are used as transmission media. The fiber optic communication interface employs LVPECL (low voltage positive emitter coupled logic level).
The SATA protocol requires bi-directional interaction to ensure data accuracy. In the data one-way transmission application, an interaction channel is blocked, and the protocol authentication problem needs to be solved; secondly, the SATA protocol includes an OOB (out of band) signal, which is a discontinuous burst pulse signal, and the signal cannot pass through the optical fiber module, so the SATA Device cannot be activated and cannot perform data transmission.
Disclosure of Invention
The embodiment of the invention provides a high-speed data one-way transmission method and device, and aims to solve the problems that protocol authentication is required for data one-way transmission based on a SATA protocol and OOB signals cannot be communicated with optical fibers in the prior art.
In order to solve the technical problem, the embodiment of the invention discloses the following technical scheme:
the invention provides a high-speed data one-way transmission method based on SATA and optical fiber technology, which comprises the following steps:
the SATA and the optical fiber interface are connected through a conditioning circuit;
at the SATA Device end, adopting forced entry Ready to enable the SATA Device to directly enter a data receiving state;
self-loop is adopted at SATA Host end to realize bidirectional data verification
With reference to the first aspect, in a first possible implementation manner of the first aspect, the self-looping includes:
the SATA Host end adopts two SATA interfaces, one is used as the Host, and the other is used as the Slave;
directly connecting the Host with the Slave to perform normal data interaction;
and a pair of differential lines is led out from the sending end of the Host and connected with the optical fiber interface, so that the unidirectional transmission of data is realized.
With reference to the first aspect, in a second possible implementation manner of the first aspect, the forcing to reach Ready includes:
the phy _ ready signal line between SATA phy and SATA controller is controlled by a system control unit and set.
With reference to the first aspect, in a third possible implementation manner of the first aspect, the setting of the conditioning circuit between the SATA and the optical fiber interface includes setting a first conditioning circuit between the SATA Host end and the optical fiber, and setting a second conditioning circuit between the SATA Device end and the optical fiber.
With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the first conditioning circuit includes a capacitor C1, a capacitor C2, a resistor R1, a resistor R2, a resistor R3, and a resistor R4, where one end of the capacitor C1 is connected to a T + end of the SATA Host, and the other end of the capacitor C1 is connected to one end of the resistor R1, one end of the resistor R3, and an R + end of the optical fiber, respectively; one end of the capacitor C2 is connected with the T-end of the SATA Host end, and the other end of the capacitor C2 is respectively connected with one end of the resistor R2, one end of the resistor R4 and the R-end of the optical fiber; the other end of the resistor R3 and the other end of the resistor R4 are grounded, and the other end of the resistor R1 and the other end of the resistor R2 are connected with a 3.3V power supply;
the second conditioning circuit has the same circuit structure as the first conditioning circuit, and is connected with a 5V power supply.
The invention provides a high-speed data unidirectional transmission device, which utilizes the high-speed data unidirectional transmission method, and comprises an SATA and optical fiber interface, and a conditioning circuit arranged on the SATA and optical fiber interface and used for solving the high-speed differential signal difference between the SATA and the optical fiber interface; the Host end of the SATA is connected with the Slave end, and a pair of differential lines is arranged between the Host end and the optical fiber interface; the system control unit and the phy _ ready signal line between sata phy and sata controller are connected.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the conditioning circuit includes a first conditioning circuit and a second conditioning circuit, the first conditioning circuit is disposed between the Host end of the SATA and the optical fiber interface, and the second conditioning circuit is disposed between the Slave end of the SATA and the optical fiber interface.
With reference to the second aspect, in a second possible implementation manner of the second aspect, the first conditioning circuit includes a capacitor C1, a capacitor C2, a resistor R1, a resistor R2, a resistor R3, and a resistor R4, one end of the capacitor C1 is connected to a T + end of the SATAHost end, and the other end of the capacitor C1 is connected to one end of the resistor R1, one end of the resistor R3, and an R + end of the optical fiber, respectively; one end of the capacitor C2 is connected with the T-end of the SATAHost end, and the other end of the capacitor C2 is respectively connected with one end of the resistor R2, one end of the resistor R4 and the R-end of the optical fiber; the other end of the resistor R3 and the other end of the resistor R4 are grounded, and the other end of the resistor R1 and the other end of the resistor R2 are connected with a 3.3V power supply.
With reference to the second aspect, in a third possible implementation manner of the second aspect, the second conditioning circuit has the same circuit structure as the first conditioning circuit, and the second conditioning circuit is connected to a 5V power supply.
The apparatus according to the second aspect of the present invention is capable of implementing the methods according to the first aspect and the implementation manners of the first aspect, and achieves the same effects.
According to the technical scheme, the embodiment of the invention solves the difference of high-speed differential signals of the SATA and the optical fiber interface by arranging the conditioning circuit between the SATA and the optical fiber. A self-loop mode is adopted at the SATAHost end to realize bidirectional data verification, and the problem that protocol authentication needs to be solved because an interaction path is blocked in data unidirectional transmission application is solved. At the SATADevice end, the SATADevice equipment directly enters a data receiving state by adopting a forced entry method, so that the problems that the SATA Device equipment cannot be activated and cannot transmit data because the OOB signal is a discontinuous burst pulse signal which cannot pass through an optical fiber module are solved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a self-looping method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a high-speed data unidirectional transmission device applied in the embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
A high-speed data unidirectional transmission method is based on SATA and optical fiber technology, and comprises the following steps:
the SATA and the optical fiber interface are connected through a conditioning circuit; the SATA and the optical fiber interface both adopt high-speed differential signals, the signals have only slight difference, and the connection requirements of the SATA and the optical fiber interface can be met through a conditioning circuit.
The SATA protocol comprises an OOB signal which is a discontinuous burst pulse signal, and the signal cannot pass through the optical fiber module, so that the SATA Device cannot be activated and cannot perform data transmission;
the SATA protocol requires bi-directional interaction to ensure data accuracy. In the application of data one-way transmission, an interaction channel is blocked, and the problem of protocol authentication needs to be solved.
As shown in fig. 1, the self-looper includes: the SATA Host end adopts two SATA interfaces, one is used as the Host, and the other is used as the Slave; directly connecting the Host with the Slave to perform normal data interaction; and a pair of differential lines is led out from the sending end of the Host and connected with the optical fiber interface, so that the unidirectional transmission of data is realized.
The forced entry Ready includes: a phy _ ready signal line between SATA phy and SATA controller is controlled by a system control unit and set. There is a phy _ ready signal line between SATA phy (SATA physical layer) and SATA controller, and normally, this signal is set only after SATA phy and host successfully establish a connection through OOB. The forced entry into ready is done by using the system control unit to control the signal line, setting it.
The method for arranging the conditioning circuit between the SATA and the optical fiber interface comprises the steps of arranging a first conditioning circuit between the SATA Host end and the optical fiber and arranging a second conditioning circuit between the SATA Device end and the optical fiber.
The first conditioning circuit comprises a capacitor C1, a capacitor C2, a resistor R1, a resistor R2, a resistor R3 and a resistor R4, wherein one end of the capacitor C1 is connected with the T + end of the SATA Host end, and the other end of the capacitor C1 is respectively connected with one end of the resistor R1, one end of the resistor R3 and the R + end of the optical fiber; one end of the capacitor C2 is connected with the T-end of the SATA Host end, and the other end of the capacitor C2 is respectively connected with one end of the resistor R2, one end of the resistor R4 and the R-end of the optical fiber; the other end of the resistor R3 and the other end of the resistor R4 are grounded, and the other end of the resistor R1 and the other end of the resistor R2 are connected with a 3.3V power supply; the second conditioning circuit has the same circuit structure as the first conditioning circuit, and is connected with a 5V power supply.
As shown in fig. 2, a high-speed data unidirectional transmission device includes SATA and optical fiber interfaces, and further includes a conditioning circuit disposed at the SATA and optical fiber interfaces for resolving a high-speed differential signal difference between the SATA and optical fiber interfaces; the Host end of the SATA is connected with the Slave end, and a pair of differential lines is arranged between the Host end and the optical fiber interface; the system control unit and the phy _ ready signal line between sata phy and sata controller are connected.
The conditioning circuit comprises a first conditioning circuit and a second conditioning circuit, the first conditioning circuit is arranged between a Host end of the SATA and the optical fiber interface, and the second conditioning circuit is arranged between a Slave end of the SATA and the optical fiber interface.
The first conditioning circuit comprises a capacitor C1, a capacitor C2, a resistor R1, a resistor R2, a resistor R3 and a resistor R4, wherein one end of the capacitor C1 is connected with the T + end of the SATA Host end, and the other end of the capacitor C1 is respectively connected with one end of the resistor R1, one end of the resistor R3 and the R + end of the optical fiber; one end of the capacitor C2 is connected with the T-end of the SATA Host end, and the other end of the capacitor C2 is respectively connected with one end of the resistor R2, one end of the resistor R4 and the R-end of the optical fiber; the other end of the resistor R3 and the other end of the resistor R4 are grounded, and the other end of the resistor R1 and the other end of the resistor R2 are connected with a 3.3V power supply. The second conditioning circuit has the same circuit structure as the first conditioning circuit and is connected with a 5V power supply.
The above description is merely illustrative of particular embodiments of the invention that enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A high-speed data unidirectional transmission method is characterized in that based on SATA and optical fiber technology, the method comprises the following steps:
the SATA and the optical fiber interface are connected through a conditioning circuit;
at the SATA Device end, adopting forced entry Ready to enable the SATA Device to directly enter a data receiving state;
a self-loop is adopted at the SATA Host end to realize bidirectional data verification;
the self-loop comprises:
the SATA Host end adopts two SATA interfaces, one is used as the Host, and the other is used as the Slave;
directly connecting the Host with the Slave to perform normal data interaction;
a pair of differential lines are led out from a sending end of the Host and connected with an optical fiber interface, so that unidirectional data transmission is realized;
the conditioning circuit comprises a capacitor C1, a capacitor C2, a resistor R1, a resistor R2, a resistor R3 and a resistor R4, wherein one end of the capacitor C1 is connected with the T + end of the SATA Host end, and the other end of the capacitor C1 is respectively connected with one end of the resistor R1, one end of the resistor R3 and the R + end of the optical fiber; one end of the capacitor C2 is connected with the T-end of the SATA Host end, and the other end of the capacitor C2 is respectively connected with one end of the resistor R2, one end of the resistor R4 and the R-end of the optical fiber; the other end of the resistor R3 and the other end of the resistor R4 are grounded, and the other end of the resistor R1 and the other end of the resistor R2 are connected with a power supply.
2. A method as claimed in claim 1, wherein said forcing into Ready includes:
the phy _ ready signal line between SATA phy and SATA controller is controlled by a system control unit and set.
3. The method as claimed in claim 1, wherein the step of providing the conditioning circuit between the SATA and the fiber interface includes providing a first conditioning circuit between the SATA Host end and the fiber interface, and providing a second conditioning circuit between the SATA Device end and the fiber interface, wherein the second conditioning circuit has a circuit structure the same as that of the first conditioning circuit, the second conditioning circuit is connected to a 5V power supply, and the first conditioning circuit is connected to a 3.3V power supply.
4. A high-speed data unidirectional transmission device, utilize a high-speed data unidirectional transmission method of any one of claims 1-3, characterized by that, the apparatus includes SATA and optical fiber interface, also include SATA and optical fiber interface have conditioning circuit, is used for solving SATA and high-speed differential signal difference between the optical fiber interface; the Host end of the SATA is connected with the Slave end, and a pair of differential lines is arranged between the Host end and the optical fiber interface; the system control unit and the phy _ ready signal line between sata phy and sata controller are connected.
5. The unidirectional transmission device of claim 4, wherein the conditioning circuit comprises a first conditioning circuit and a second conditioning circuit, the first conditioning circuit is arranged between the Host end of the SATA and the optical fiber interface, and the second conditioning circuit is arranged between the Slave end of the SATA and the optical fiber interface.
6. The device according to claim 5, wherein the first conditioning circuit comprises a capacitor C1, a capacitor C2, a resistor R1, a resistor R2, a resistor R3, and a resistor R4, one end of the capacitor C1 is connected to the T + terminal of the SATA Host, and the other end of the capacitor C1 is connected to one end of the resistor R1, one end of the resistor R3, and the R + terminal of the optical fiber, respectively; one end of the capacitor C2 is connected with the T-end of the SATA Host end, and the other end of the capacitor C2 is respectively connected with one end of the resistor R2, one end of the resistor R4 and the R-end of the optical fiber; the other end of the resistor R3 and the other end of the resistor R4 are grounded, and the other end of the resistor R1 and the other end of the resistor R2 are connected with a 3.3V power supply.
7. A high-speed data unidirectional transmission device according to claim 6, wherein the second conditioning circuit has the same circuit structure as the first conditioning circuit, and the second conditioning circuit is connected with a 5V power supply.
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Address after: 250101 16 / F, building 2, Aosheng building, 1166 Xinluo street, high tech Zone, Jinan City, Shandong Province Patentee after: ZHONGFU INFORMATION Co.,Ltd. Patentee after: Zhongfu Safety Technology Co.,Ltd. Address before: 250101 16 / F, building 2, Aosheng building, 1166 Xinluo street, high tech Zone, Jinan City, Shandong Province Patentee before: ZHONGFU INFORMATION Co.,Ltd. Patentee before: SHANDONG ZHONGFU SAFETY TECHNOLOGY CO.,LTD. |