CN112885527B - Serial advanced technology installation cable - Google Patents
Serial advanced technology installation cable Download PDFInfo
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- CN112885527B CN112885527B CN201911208663.1A CN201911208663A CN112885527B CN 112885527 B CN112885527 B CN 112885527B CN 201911208663 A CN201911208663 A CN 201911208663A CN 112885527 B CN112885527 B CN 112885527B
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- line
- transmission interface
- data transmission
- sata cable
- sata
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0225—Three or more layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0861—Flat or ribbon cables comprising one or more screens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
Abstract
The invention discloses a serial advanced technology installation (SATA) cable, which comprises a first grounding wire, two data transmission wires, an insulating material coating the two data transmission wires and the first grounding wire, and an insulating sheath coating the insulating material, wherein one end of the first grounding wire is connected with a first transmission interface, and the other end of the first grounding wire is connected with a second transmission interface; the shielding layer included by each data transmission line is branched at a first position and a second position so as to form second grounding wires which are respectively connected with the first transmission interface and the second transmission interface at two ends of the SATA cable, the distance between each first position and the first transmission interface is less than or equal to a first preset length, and the distance between each second position and the second transmission interface is less than or equal to a second preset length; each data transmission line comprises an insulating layer for keeping the first grounding line and the second grounding line open.
Description
Technical Field
The present invention relates to a cable, in particular a Serial Advanced Technology Attachment (SATA) cable.
Background
Conventional methods for testing a motherboard or a small card (DAUGHTER BOARD) mounted on the motherboard generally employ Manual Visual Inspection (MVI) and electrical testing to perform Manufacturing Defect Analysis (MDA), In-Circuit Test (ICT), and Function BOARD Test (FBT). However, as the motherboard gradually develops toward miniaturization, densification and multilayering, the volume of the motherboard or the small card mounted on the motherboard becomes smaller and smaller, the density of the circuit becomes larger and the complexity of the circuit becomes higher and higher, so that the foregoing test method is insufficient, and especially, the function board test only makes a test scheme from a function perspective, and only can confirm the function of the motherboard or the small card to be tested, but cannot accurately position the specific pins of the motherboard or the small card to be tested, and cannot ensure the test coverage of the power line and the ground line. Therefore, in order to ensure the correctness of the circuit function and have higher reliability, the industry has adopted the boundary scan scheme to test the motherboard or the small card installed on the motherboard, so as to enhance the test positioning precision and effectively improve the test coverage rate of the power line and the ground line.
The wire used in the initial industry adopting the boundary scan test scheme usually uses a functional board to test the wire, but the actual test coverage rate cannot achieve the expected ideal effect. In order to solve the above problems, the industry tries to individually connect the signal line, the power line and the ground line in the wire, and design the wire in a PIN-to-PIN (PIN-to-PIN) manner, however, after the verification of the wire, the wire is found to have poor test stability and cannot meet the First Pass Yield (FPY) required by the production line, so most manufacturers still use the wire used in the function board test to perform the boundary scan test.
When the wire used for boundary scan testing of the motherboard or the small card to be tested is the SATA transmission line, the SATA transmission line usually includes the SATA cable having three ground lines and four signal lines arranged in an adjacent spaced-apart manner (as shown in fig. 1, fig. 1 is a schematic structural view of an embodiment of the SATA cable, in which the lines in the diagram include, in order from top to bottom, a ground line 11a, a signal line 12b, a ground line 11b, a signal line 13a, a signal line 13b, and a ground line 11c, where the signal line 12a and the signal line 12b are paired differential signal lines, the signal line 13a and the signal line 13b are another paired differential signal line), and two connectors having seven terminals and assembled on two sides of the SATA cable, where the three ground lines are connected together by an internal shielding layer (not shown), and therefore, the specification of the SATA cable exists in the boundary scan testing (that the three ground lines are connected together by an internal shielding layer) ) Resulting in a lack of test coverage for the three ground wires in the SATA cable.
Disclosure of Invention
The invention discloses a SATA cable.
The invention discloses a SATA cable, wherein one end of the SATA cable is assembled with a first transmission interface, and the other end of the SATA cable is assembled with a second transmission interface. The SATA cable includes: the first ground wire, the two data transmission lines, the insulating material and the insulating sheath for coating the insulating material. One end of the first grounding wire is connected with the first transmission interface, and the other end of the first grounding wire is connected with the second transmission interface; each data transmission line comprises a differential line pair, a shielding layer covering the differential line pair and an insulating layer covering the shielding layer, each differential line pair comprises two differential lines, one end of each differential line is connected with the first transmission interface, and the other end of each differential line is connected with the second transmission interface; the shielding layer included by each data transmission line is branched at a first position and a second position so as to form second grounding wires which are respectively connected with the first transmission interface and the second transmission interface at two ends of the SATA cable, the distance between each first position and the first transmission interface is less than or equal to a first preset length, and the distance between each second position and the second transmission interface is less than or equal to a second preset length; each data transmission line comprises an insulating layer for keeping the first grounding line and the second grounding line open; the insulating material is used for coating the two data transmission lines, the first grounding line and the second grounding line.
In one embodiment, the SATA cable is less than fifty centimeters in length.
In one embodiment, the first predetermined length is one centimeter.
In one embodiment, the second predetermined length is one centimeter.
In one embodiment, each data transmission line includes each differential line surrounded by another insulating layer.
In one embodiment, the periphery of the first ground line is coated with another insulating layer.
In one embodiment, the first ground line is disposed between the two data transmission lines.
In one embodiment, the shielding layer included in each data transmission line is a copper foil or an aluminum foil.
The SATA cable disclosed in the present invention is different from the SATA cable in that the shielding layer included in each data transmission line is bifurcated between a first position and a second position to form second ground lines connected to the first transmission interface and the second transmission interface at two ends of the SATA cable, a distance between each first position and the first transmission interface is less than or equal to a first preset length, a distance between each second position and the second transmission interface is less than or equal to a second preset length, and an insulating layer included in each data transmission line is used to keep the first ground line and the second ground line open.
By the technical means, when the wire used for performing the boundary scan test on the host board or the small card to be tested is the SATA transmission line comprising the SATA cable, the insulation layer included in each data transmission line in the SATA cable is used for keeping the first ground wire and the second ground wire open (namely three ground wires of the SATA cable are kept open), so that the test coverage rate of the ground wire of the SATA cable can be effectively improved, the problems that the wire designed in the original pin-to-pin mode has poor test stability and cannot meet the boundary scan test implementation of an industrial field can be solved, the short part of a test integration scheme in the aspect of hardware is further corrected, and the production line production and use are met. In addition, when the distance between each first position and the first transmission interface is less than or equal to a first preset length and the distance between each second position and the second transmission interface is less than or equal to a second preset length, a relatively ideal shielding effect can be achieved, the signal transmission reliability of the SATA cable is ensured, and the result of the boundary scan test has higher reliability.
Drawings
FIG. 1 is a schematic view of an embodiment of a SATA cable;
FIG. 2 is a schematic structural diagram of an embodiment of the SATA cable according to the present invention, wherein a first transmission interface and a second transmission interface are assembled on two sides of the SATA cable;
FIG. 3A is a schematic diagram of one embodiment of the first transmission interface of FIG. 2;
FIG. 3B is a schematic diagram of an embodiment of the second transmission interface of FIG. 2;
FIG. 4 is a cross-sectional view taken along line A-A of the SATA cable of FIG. 2;
fig. 5 is a schematic top cross-sectional view of the SATA cable of fig. 2.
Description of reference numerals:
11a, 11b, 11c … ground line
12a, 12b, 13a, 13b … signal line
30 … conducting wire
50 … first transmission interface
51a, 61a … first signal transmission terminal
51b, 61b … first signal receiving terminal
52a, 62a … second signal transmission terminal
52b, 62b … second signal receiving terminal
53a, 53b, 53c … first ground terminal
60 … second transmission interface
63a, 63b, 63c … second ground terminal
70a, 70b … differential line
72. 82 … Shielding layer
74. 84 … insulating layer
80a, 80b … differential line
90 … insulating layer
92 … insulating layer
100 … SATA cable
110 … first ground line
120a, 120b … data transmission line
130 … insulating material
140 … insulating sheath
E. M … first position
F. Second position of N …
L … length
Distances D1, D2, D3 and D4 …
Detailed Description
The embodiments of the present invention will be described in detail with reference to the drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.
Referring to fig. 2, fig. 2 is an exemplary view of a SATA cable having a first transmission interface and a second transmission interface mounted on two sides thereof according to an embodiment of the present invention. In the present embodiment, a first transmission interface 50 may be assembled at one end of the SATA cable 100, and a second transmission interface 60 may be assembled at the other end, wherein the first transmission interface 50 and the second transmission interface 60 may be respectively soldered at two ends of the SATA cable 100 by using a Surface Mount Technology (SMT), or may be respectively fixed at two ends of the SATA cable 100 by using a clamping method, and the way in which the actual first transmission interface 50 and the actual second transmission interface 60 are respectively assembled at two ends of the SATA cable 100 may be adjusted according to actual requirements. Note that, the length L of the SATA cable 100 refers to the length of the insulating sheath at the outermost periphery (as shown in fig. 2), and in the present embodiment, the length L of the SATA cable 100 may be less than fifty centimeters and greater than ten centimeters.
Referring to fig. 3A and 3B, fig. 3A is a schematic diagram of an embodiment of the first transmission interface of fig. 2, and fig. 3B is a schematic diagram of an embodiment of the second transmission interface of fig. 2. In the present embodiment, the first transmission interface 50 and the second transmission interface 60 may be, but not limited to, a SATA male connector or a SATA female connector, the first transmission interface 50 may include a first signal transmitting terminal 51a, a first signal receiving terminal 51b, a second signal transmitting terminal 52a, a second signal receiving terminal 52b, a first ground terminal 53a, a first ground terminal 53b and a first ground terminal 53c, and the second transmission interface 60 may include a first signal transmitting terminal 61a, a first signal receiving terminal 61b, a second signal transmitting terminal 62a, a second signal receiving terminal 62b, a second ground terminal 63a, a second ground terminal 63b and a second ground terminal 63 c.
In this embodiment, the SATA cable 100 may include: the first ground line 110, the data transmission line 120a, the data transmission line 120b, the insulating material 130, and the insulating sheath 140 covering the insulating material 130 (as shown in fig. 4 and 5, fig. 4 is a schematic sectional view of a line a-a of the SATA cable of fig. 2, and fig. 5 is a schematic sectional view of a top view of the SATA cable of fig. 2). The first ground line 110 may be disposed between the data transmission line 120a and the data transmission line 120 b.
In the present embodiment, the data transmission line 120a may include a differential line 70a, a differential line 70b (the differential line 70a and the differential line 70b are paired differential lines, i.e., a differential line pair), a shielding layer 72 covering the differential line 70a and the differential line 70b, and an insulating layer 74 covering the shielding layer 72, and the data transmission line 120a may surround the differential line 70a and the differential line 70b in a space formed by the shielding layer 72 through the shielding layer 72 (as shown in fig. 4); the data transmission line 120b may include a differential line 80a, a differential line 80b (the differential line 80a and the differential line 80b are paired, i.e., a differential line pair), a shielding layer 82 covering the differential line 80a and the differential line 80b, and an insulating layer 84 covering the shielding layer 82, and the data transmission line 120b may surround the differential line 80a and the differential line 80b in a space formed by the shielding layer 82 through the shielding layer 82 (as shown in fig. 4).
In the present embodiment, the peripheries of the differential lines 70a, 70b, 80a and 80b may be coated with another insulating layer 90 (i.e., each data transmission line includes another insulating layer coated on the periphery of each differential line); the first ground line 110 includes a conductive wire 30 and an insulating layer 92 covering the conductive wire 30; the shielding layer 72 included in the data transmission line 120a and the shielding layer 82 included in the data transmission line 120b (i.e., the shielding layer included in each data transmission line) may be, but not limited to, copper foil, aluminum foil, or other metal materials having electromagnetic wave, electrostatic and noise shielding functions.
Referring to fig. 3A, fig. 3B, fig. 4 and fig. 5, in the present embodiment, two ends of the wire 30 of the first grounding line 110 can be respectively connected to the first grounding terminal 53B and the second grounding terminal 63B; the differential line 70a has two ends connected to the first signal transmitting terminal 51a and the first signal receiving terminal 61b, the differential line 70b has two ends connected to the first signal receiving terminal 51b and the first signal transmitting terminal 61a, the differential line 80a has two ends connected to the second signal transmitting terminal 52a and the second signal receiving terminal 62b, and the differential line 80b has two ends connected to the second signal receiving terminal 52b and the second signal transmitting terminal 62a (i.e., one end of each differential line is connected to the first transmission interface 50 and the other end of each differential line is connected to the second transmission interface 60).
In the present embodiment, the shielding layer 72 included in the data transmission line 120a may be bifurcated at the first position M and the second position N thereof, so as to form second ground lines (as shown in fig. 5) respectively connected to the first transmission interface 50 and the second transmission interface 60 at two ends of the SATA cable 100. More specifically, the second ground line branched from the first position M may be connected to the first ground terminal 53a, and the second ground line branched from the second position N may be connected to the second ground terminal 63 a. Wherein, a distance D1 between the first position M and the first transmission interface 50 is less than or equal to a first preset length, and a distance D3 between the second position N and the second transmission interface 60 is less than or equal to a second preset length; the data transmission line 120a includes an insulating layer 74 for keeping the first ground line 110 and the second ground lines (i.e., the second ground line formed by branching from the first position M and the second ground line formed by branching from the second position N) open.
The shielding layer 82 included in the data transmission line 120b may be bifurcated at the first position E and the second position F thereof to form a second ground line (as shown in fig. 5) respectively connected to the first transmission interface 50 and the second transmission interface 60 at two ends of the SATA cable 100. More specifically, the second ground line branched from the first position E may be connected to the first ground terminal 53c, and the second ground line branched from the second position F may be connected to the second ground terminal 63 c. The distance D2 between the first position E and the first transmission interface 50 is less than or equal to a first preset length, and the distance D4 between the second position F and the second transmission interface 60 is less than or equal to a second preset length; the data transmission line 120b includes an insulating layer 84 for keeping the first ground line 110 and the second ground lines (i.e., the second ground line formed by branching from the first position E and the second ground line formed by branching from the second position F) open.
Wherein, the distance D1 between the first position M and the first transmission interface 50 is the shortest distance between the edge of the insulating layer 74 contacting with the external environment and the first position M (as shown in fig. 5), and the distance D2 between the first position E and the first transmission interface 50 is the shortest distance between the edge of the insulating layer 84 contacting with the external environment and the first position E (as shown in fig. 5); the distance D3 between the second position N and the second transmission interface 60 is the shortest distance between the edge of the insulating layer 74 contacting the external environment and the second position N (as shown in fig. 5), and the distance D4 between the second position F and the second transmission interface 60 is the shortest distance between the edge of the insulating layer 84 contacting the external environment and the second position F (as shown in fig. 5).
In this embodiment, the first predetermined length may be but not limited to one centimeter, the second predetermined length may be but not limited to one centimeter, and the actual first predetermined length and the actual second predetermined length may be adjusted according to actual requirements, and it should be noted that when the distance between each first position and the first transmission interface is less than or equal to the first predetermined length and the distance between each second position and the second transmission interface is less than or equal to the second predetermined length, a more ideal shielding effect can be achieved, thereby ensuring the reliability of signal transmission of the SATA cable 100.
In the present embodiment, the insulating material 130 is used to cover the data transmission lines 120a, 120b, the first ground line 110, the second ground line formed by branching off the first position of the shielding layer included in each data transmission line, and the second ground line formed by branching off the second position of the shielding layer included in each data transmission line (as shown in fig. 5).
In summary, it can be seen that the difference between the present invention and the prior art is that the shielding layer included in each data transmission line is bifurcated at the first position and the second position thereof to form second ground lines respectively connected to the first transmission interface and the second transmission interface at the two ends of the SATA cable, the distance between each first position and the first transmission interface is less than or equal to a first preset length, the distance between each second position and the second transmission interface is less than or equal to a second preset length, and the insulating layer included in each data transmission line is used to keep the first ground line and the second ground lines open. Therefore, when the wire used for performing the boundary scan test on the motherboard or the small card to be tested is the SATA transmission line including the SATA cable of the present invention, since the insulating layer included in each data transmission line in the SATA cable is used to keep the first ground line and the second ground lines open (i.e., three ground lines of the SATA cable are kept open), the test coverage of the ground lines of the SATA cable can be effectively improved, and the problem that the wire designed in the original pin-to-pin mode has poor test stability and cannot meet the boundary scan test implementation in the industrial field can be solved, thereby further correcting the short part of the test integration scheme in the hardware aspect and satisfying the production and use of the production line. In addition, when the distance between each first position and the first transmission interface is less than or equal to a first preset length and the distance between each second position and the second transmission interface is less than or equal to a second preset length, a relatively ideal shielding effect can be achieved, the signal transmission reliability of the SATA cable is ensured, and the result of the boundary scan test has higher reliability.
Although the present invention has been described with reference to the foregoing embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. A Serial Advanced Technology Attachment (SATA) cable having a first transmission interface assembled at one end thereof and a second transmission interface assembled at the other end thereof, the SATA cable comprising:
one end of the first grounding wire is connected with the first transmission interface, and the other end of the first grounding wire is connected with the second transmission interface;
each data transmission line comprises a differential line pair, a shielding layer covering the differential line pair and an insulating layer covering the shielding layer, wherein each differential line pair comprises two differential lines, one end of each differential line is connected with the first transmission interface, and the other end of each differential line is connected with the second transmission interface; the shielding layer included in each data transmission line is bifurcated at a first position and a second position so as to form second grounding wires which are respectively connected with the first transmission interface and the second transmission interface at two ends of the SATA cable, the distance between each first position and the first transmission interface is less than or equal to a first preset length, and the distance between each second position and the second transmission interface is less than or equal to a second preset length; each data transmission line comprises an insulating layer for keeping the first ground line and the second ground line open;
the insulating material is used for coating the two data transmission lines, the first grounding line and the second grounding line; and
and the insulating sheath coats the insulating material.
2. The SATA cable of claim 1, wherein the SATA cable has a length less than fifty centimeters and greater than ten centimeters.
3. The SATA cable of claim 1, wherein the first predetermined length is one centimeter.
4. The SATA cable of claim 1, wherein the second predetermined length is one centimeter.
5. The SATA cable of claim 1, wherein each of said data transmission lines includes a differential line surrounded by an insulating layer.
6. The SATA cable of claim 1, wherein the first ground line is peripherally wrapped with another insulating layer.
7. The SATA cable according to claim 1, wherein the first ground line is disposed between the two data transmission lines.
8. The SATA cable of claim 1, wherein the shielding layer included in each of the data transmission lines is a copper foil or an aluminum foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911208663.1A CN112885527B (en) | 2019-11-30 | 2019-11-30 | Serial advanced technology installation cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911208663.1A CN112885527B (en) | 2019-11-30 | 2019-11-30 | Serial advanced technology installation cable |
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| Publication Number | Publication Date |
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| CN112885527A CN112885527A (en) | 2021-06-01 |
| CN112885527B true CN112885527B (en) | 2022-05-27 |
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| CN201911208663.1A Active CN112885527B (en) | 2019-11-30 | 2019-11-30 | Serial advanced technology installation cable |
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| JP2002289041A (en) * | 2001-03-23 | 2002-10-04 | Sumitomo Electric Ind Ltd | Electric wire processed article |
| CN203536089U (en) * | 2013-09-26 | 2014-04-09 | 东莞讯滔电子有限公司 | Flat cable |
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| CN206322493U (en) * | 2016-12-20 | 2017-07-11 | 凡甲电子(苏州)有限公司 | Flat cable |
| CN107112091A (en) * | 2014-11-28 | 2017-08-29 | 罗森伯格高频技术有限及两合公司 | Cable with twisted wire pair |
Family Cites Families (2)
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| JP5213106B2 (en) * | 2008-01-17 | 2013-06-19 | デクセリアルズ株式会社 | Flat cable |
| US9349507B2 (en) * | 2012-11-06 | 2016-05-24 | Apple Inc. | Reducing signal loss in cables |
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2019
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002289041A (en) * | 2001-03-23 | 2002-10-04 | Sumitomo Electric Ind Ltd | Electric wire processed article |
| CN203536089U (en) * | 2013-09-26 | 2014-04-09 | 东莞讯滔电子有限公司 | Flat cable |
| CN107112091A (en) * | 2014-11-28 | 2017-08-29 | 罗森伯格高频技术有限及两合公司 | Cable with twisted wire pair |
| CN204257980U (en) * | 2014-12-17 | 2015-04-08 | 德尔福派克电气系统有限公司 | A kind of shielding conductor ground structure |
| CN105529108A (en) * | 2016-01-27 | 2016-04-27 | 北京小鸟看看科技有限公司 | MHL (mobile high-definition link) cable and virtual reality equipment |
| CN206322493U (en) * | 2016-12-20 | 2017-07-11 | 凡甲电子(苏州)有限公司 | Flat cable |
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