Serial-parallel port device based on PCIE16X slot

Abstract

The utility model provides a serial-parallel port device based on a PCIE16X slot. The serial-parallel port device comprises a mainboard, an adapter plate and a braid wire, the braid wire comprises a bus terminal, a parallel port terminal and at least one serial port terminal, wherein the parallel port terminal and the serial port terminal are connected with the bus terminal. The mainboard is provided with at least one PCIE (Peripheral Component Interface Express) X16 slot, and the PCIE X16 slot is connected with a main control chip on the mainboard; the adapter plate is provided with a PCIE (Peripheral Component Interface Express) X16 conversion interface, the PCIE X16 end of the PCIE X16 conversion interface is connected with the PCIE X16 slot, and the conversion end of the PCIE X16 conversion interface is connected with the bus terminal. The PCIE X16 slot connected with the main control chip is arranged on the main board, the adapter plate and the braid wire are combined, the multi-serial-port and parallel-port functions of the main board are achieved, the function selecting and matching requirements of a user for the multi-serial-port and parallel-port functions are met, the PCIE X16 slot and other interfaces such as a USB port and a network port on the main board are not squeezed, a large amount of space is saved, and the cost is reduced. And the appearance and configuration upgrading of the mainboard product is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of universal serial and parallel port design, in particular to a serial and parallel port device based on a PCIE_16X slot. Background Art

[0002] Serial port and parallel port are two common interfaces for data transmission between computers and external devices. They are stable and easy to transmit, and are widely used in various industries. Currently, the commonly used parallel port is DB25 interface, and the commonly used serial port is DB9 interface.

[0003] At present, the way to use multiple serial ports and parallel ports is usually to directly connect the serial and parallel port signals led out by the CPU / SIO to the DB9 interface and the DB25 interface. However, in the application scenarios where there are more serial port requirements in the financial and industrial control industries, the DB9 interface and the DB25 interface are relatively large, which seriously hinders the lightweight design and special structure design of the product. In addition, some users do not have the need for serial and parallel ports, and the design of all on-board will bring unnecessary waste, and the interface on the motherboard is not easy to meet the customized serial and parallel port requirements of customers. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a serial and parallel port device based on a PCIE_16X slot, which can save space on a mainboard while realizing the functions of the serial and parallel ports, thereby meeting the customized serial and parallel port requirements of customers.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A serial-parallel port device based on a PCIE_16X slot comprises a mainboard, an adapter board and a pigtail cable; the pigtail cable comprises a bus terminal, a parallel port terminal connected to the bus terminal and at least one serial port terminal; the mainboard is provided with at least one PCIE X16 slot, the PCIE X16 slot is connected to a main control chip on the mainboard; the adapter board is provided with a PCIE X16 conversion interface, the PCIE X16 end of the PCIE X16 conversion interface is connected to the PCIEX16 slot, and the conversion end of the PCIE X16 conversion interface is connected to the bus terminal.

[0007] Furthermore, the adapter board also includes a level selection component; the input end of the level selection component is connected to the PCIE X16 end of the PCIE X16 conversion interface; the output end of the level selection component is connected to the conversion end of the PCIE X16 conversion interface.

[0008] Further, the level selection component includes a level converter and a jumper; the PCIE X16 end of the PCIE X16 conversion interface is respectively connected to the output end of the level converter and the first input end of the jumper; the output end of the level converter is connected to the second input end of the jumper; the output end of the jumper is connected to the conversion end of the PCIE X16 conversion interface.

[0009] Furthermore, the conversion end of the PCIE X16 conversion interface includes a PCIE X16 to DB44 interface; and the bus terminal includes a DB44 terminal.

[0010] Furthermore, the mainboard is also provided with at least one second PCIE X16 slot connected to the main control chip; the second PCIE X16 slot is used to connect an independent graphics card.

[0011] Furthermore, the signal line of the main control chip is connected to the signal pins X9 to X16 of the PCIE X16 slot.

[0012] Furthermore, the pigtail cable includes a DB25 parallel port terminal and at least one DB9 serial port terminal.

[0013] Furthermore, the pigtail cable includes a parallel port terminal and at least two serial port terminals of different types.

[0014] The beneficial effect of the utility model is that a PCIE X16 slot connected to the main control chip is set on the mainboard, and combined with the PCIE X16 conversion interface on the adapter board, it is connected with a pigtail cable having a parallel port terminal and multiple serial port terminals, thereby realizing the multi-serial port and parallel port functions of the mainboard, meeting the user's functional selection requirements for multiple serial ports and parallel ports, and the PCIE X16 slot and other interfaces on the mainboard, such as USB ports, network ports, etc., do not form a squeeze, saving a lot of space, and is more conducive to the appearance and configuration upgrade of the mainboard product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a serial-parallel port device based on a PCIE_16X slot in an embodiment of the present utility model;

[0016] Figure 2 A signal diagram of PCIE_16X in a serial-parallel port device based on a PCIE_16X slot in an embodiment of the utility model;

[0017] Figure 3 The structure of the adapter board in a serial-parallel port device based on a PCIE_16X slot in an embodiment of the utility model is schematically shown;

[0018] Figure 4It is a signal diagram of a DB44 interface in a serial-parallel port device based on a PCIE_16X slot in an embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the pigtail structure in a serial-parallel port device based on a PCIE_16X slot in an embodiment of the utility model;

[0020] Figure 6 This is a schematic diagram of signal connection of a pigtail cable in a serial-parallel port device based on a PCIE_16X slot in an embodiment of the present utility model;

[0021] Description of labels:

[0022] 1. Mainboard; 11. PCIE X16 slot; 12. Main control chip; 2. Adapter board; 21. Level selection component; 211. Level converter; 212. Jumper; 3. Braid cable; 31. Serial port terminal; 32. Parallel port terminal. DETAILED DESCRIPTION

[0023] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0024] Please refer to Figure 1 , a serial-parallel port device based on a PCIE_16X slot, comprising a mainboard, an adapter board and a pigtail cable; the pigtail cable comprises a bus terminal, a parallel port terminal and at least one serial port terminal connected to the bus terminal; at least one PCIE X16 slot is provided on the mainboard, and the PCIE X16 slot is connected to a main control chip on the mainboard; a PCIE X16 conversion interface is provided on the adapter board, a PCIE X16 end of the PCIE X16 conversion interface is connected to the PCIE X16 slot, and a conversion end of the PCIE X16 conversion interface is connected to the bus terminal.

[0025] From the above description, it can be seen that the beneficial effect of the utility model is: by setting a PCIE X16 slot connected to the main control chip on the mainboard, and combining the PCIE X16 conversion interface on the adapter board, and connecting it with a pigtail cable having a parallel port terminal and multiple serial port terminals, the multi-serial port and parallel port functions of the mainboard are realized, meeting the user's functional selection requirements for multiple serial ports and parallel ports, and the PCIE X16 slot and other interfaces on the mainboard such as USB ports, network ports, etc. are not squeezed, saving a lot of space, and being more conducive to the appearance and configuration upgrade of the mainboard product.

[0026] Furthermore, the adapter board also includes a level selection component; the input end of the level selection component is connected to the PCIE X16 end of the PCIE X16 conversion interface; the output end of the level selection component is connected to the conversion end of the PCIE X16 conversion interface.

[0027] From the above description, it can be seen that by setting a level selection component on the adapter board, different level modes can be selected for data transmission according to actual needs, such as using TTL (Time To Live) level signal or RS232 level signal to meet different application requirements.

[0028] Further, the level selection component includes a level converter and a jumper; the PCIE X16 end of the PCIE X16 conversion interface is respectively connected to the output end of the level converter and the first input end of the jumper; the output end of the level converter is connected to the second input end of the jumper; the output end of the jumper is connected to the conversion end of the PCIE X16 conversion interface.

[0029] From the above description, it can be seen that the level selection component is composed of a level converter and a jumper, and the conversion of different level signals is realized based on the level conversion function of the level converter, such as converting the TTL level to the RS232 level, and the level signal before the conversion or the level signal after the conversion is selected by the jumper to be output to the conversion end of the PCIE X16 conversion interface, thereby realizing the level selection function.

[0030] Furthermore, the conversion end of the PCIE X16 conversion interface includes a PCIE X16 to DB44 interface; and the bus terminal includes a DB44 terminal.

[0031] From the above description, it can be seen that the PCIE X16 conversion interface adopts PCIE X16 to DB44 interface, which can realize the conversion of PCIEX16 to DB44 interface, and the DB44 interface has multiple pins, which makes it easier to realize the conversion of multiple serial ports and parallel ports; at the same time, the bus terminal of the pigtail cable also adopts DB44 terminal to realize the corresponding connection.

[0032] Furthermore, the mainboard is also provided with at least one second PCIE X16 slot connected to the main control chip; the second PCIE X16 slot is used to connect an independent graphics card.

[0033] It can be seen from the above description that by providing a second PCIE X16 slot on the mainboard for plugging in an independent graphics card, the image processing capability of the mainboard product is improved.

[0034] Furthermore, the signal line of the main control chip is connected to the signal pins X9 to X16 of the PCIE X16 slot.

[0035] From the above description, it can be seen that by connecting the signal lines led out of the main control chip to the signal pins X9 to X16 of the PCIE X16 slot without occupying the signal pins of the front X8 part, it can prevent customers from mistakenly inserting an X8 graphics card and causing the graphics card to burn out.

[0036] Furthermore, the pigtail cable includes a DB25 parallel port terminal and at least one DB9 serial port terminal.

[0037] It can be seen from the above description that by providing a DB25 parallel port terminal and at least one DB9 serial port terminal, the needs of users for serial ports and parallel ports in most scenarios can be met.

[0038] Furthermore, the pigtail cable includes a parallel port terminal and at least two serial port terminals of different types.

[0039] It can be seen from the above description that by providing a parallel port terminal and at least two different types of serial port terminals, the user's application requirements for different types of serial ports and parallel ports can be met.

[0040] The serial-parallel port device based on PCIE_16X slot provided by the utility model can be applied to the serial-parallel port application scenarios on electronic devices, such as being applied to single-chip motherboards, computer motherboards, etc., and is described below through specific implementation methods:

[0041] Embodiment 1:

[0042] Please refer to Figure 1 , a serial-parallel port device based on a PCIE_16X slot, comprising a mainboard 1, an adapter board 2 and a braid cable 3; the braid cable 3 comprises a bus terminal, a parallel port terminal 32 connected to the bus terminal and at least one serial port terminal 31; the mainboard 1 is provided with at least one PCIE X16 slot 11, the PCIE X16 slot 11 is connected to a main control chip 12 on the mainboard 1, for example, if the main control chip 12 is a CPU / SIO (Super I / O, super input and output chip), the serial port signal and the parallel port signal led out by the CPU or SIO are directly connected to the signal pin part of the PCIE X16 slot 11; the adapter board 2 is provided with a PCIE X16 conversion interface, the PCIE X16 end of the PCIE X16 conversion interface is connected to the PCIE X16 slot 11, and the conversion end of the PCIE X16 conversion interface is connected to the bus terminal; wherein the adapter board 2 can also be replaced by an expansion board with the same function.

[0043] In an optional embodiment, the motherboard 1 is further provided with at least one second PCIE X16 slot connected to the main control chip 12, and the second PCIE X16 slot is used to connect an independent graphics card; in this case, the motherboard 1 includes at least two PCIE X16 slots 11; in order to avoid damage to the graphics card due to incorrect insertion of the graphics card, the signal line of the main control chip 12 is connected to the signal pins X9 to X16 of the PCIE X16 slot 11; please refer to Figure 2 , directly connect the serial port signal and parallel port signal led out by the CPU or SIO to the signal pin part from X9 to X16 of the PCIE X16 slot 11. There is no restriction on which pins are used for the signals, and they can be replaced at will. It is only necessary to design the matching adapter board 2 to correspond to them one by one. The signal pins of the front X8 part of the PCIE X16 slot 11 are not occupied. The front X8 part of the PCIE X16 slot 11 is designed according to the normal PCIE X8 signal, thereby preventing the customer from accidentally inserting the X8 graphics card and burning it.

[0044] In an optional embodiment, the adapter board 2 is connected to the PCIE X16 slot 11 through a PCIE X16 gold finger to realize the conversion of the PCIE X16 slot 11 to the DB44 interface, and can realize the power supply of the serial port specified pin, TTL and RS232 level conversion and other functions according to customer needs, that is, the PCIE X16 conversion interface adopts a PCIE X16 to DB44 interface; the bus terminal adopts a DB44 terminal, specifically: the adapter board 2 also includes a level selection component 21; the input end of the level selection component 21 is connected to the PCIE X16 end (that is, the PCIE X16 gold finger) of the PCIE X16 conversion interface; the output end of the level selection component 21 is connected to the conversion end (that is, the DB44 interface) of the PCIE X16 conversion interface; wherein the level selection component 21 includes a level converter 211 and a jumper 212; the PCIE The X16 end is respectively connected to the output end of the level converter 211 and the first input end of the jumper 212; the output end of the level converter 211 is connected to the second input end of the jumper 212, and the level converter 211 includes a MAX3243 chip for converting the serial port TTL level to the RS232 level; the output end of the jumper 212 is connected to the conversion end of the PCIE X16 conversion interface, and different levels are selected through the first input end or the second input end of the jumper 212. If the TTL level is required, the input end of the jumper 212 is connected to the PCIE X16 gold finger; if the RS232 level is required, the input end of the jumper 212 is connected to the MAX3243 chip; or a level selector is used instead of the jumper 212, and the TTL level or RS232 level is selected through the level selector; please refer to Figure 4 , which is the final signal of the DB44 interface; the marked part is the parallel port signal, and the others are the signals of serial ports 1 to 6, the power signal and the ground signal.

[0045] The pigtail cable 3 includes a DB25 parallel port terminal 32 and at least one DB9 serial port terminal 31; please refer to Figure 5 In an optional implementation, the pigtail cable 3 is set to a bus terminal (DB44 interface) to convert 4 DB9 serial ports plus a DB25 parallel port; wherein, multiple pigtail cables 3 can also be designed, for example, to achieve the functional requirements of one serial port, two serial ports, three serial ports, four serial ports, etc. plus a parallel port, and to set a parallel port terminal 32 and at least two different types of serial port terminals 31, according to the specific needs of the user; please refer to Figure 6 , which is the signal line sequence connection of the interface terminal; one-to-one matching is performed according to the signal pin definition of the DB44 interface finally output by the adapter board 2; if the definition of the DB44 interface signal pin changes, the signal line sequence connection of the interface terminal also needs to be changed accordingly.

[0046] In summary, the utility model provides a serial-parallel port device based on the PCIE_16X slot, which realizes the multi-serial port and parallel port functions of the motherboard by setting a PCIE X16 slot connected to the main control chip on the motherboard, and combining the PCIE X16 conversion interface on the adapter board, and connecting with a pigtail cable having a parallel port terminal and multiple serial port terminals, so as to meet the user's functional selection requirements for multiple serial ports and parallel ports, and the PCIE X16 slot and other interfaces on the motherboard such as the USB port and the network port do not form a squeeze, saving a lot of space, and being more conducive to the appearance and configuration upgrade of the motherboard product; at the same time, only the adapter board and the external pigtail cable need to be changed, and different configuration requirements can be achieved without changing the motherboard, which is flexible in operation and convenient for customers' customized needs.

[0047] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A serial-parallel port device based on a PCIE_16X slot, characterized in that: Including motherboard, adapter board and pigtail cable; The pigtail cable includes a bus terminal, a parallel port terminal and at least one serial port terminal connected to the bus terminal; At least one PCIE X16 slot is provided on the mainboard, and the PCIE X16 slot is connected to the main control chip on the mainboard; The adapter board is provided with a PCIE X16 conversion interface, a PCIE X16 end of the PCIE X16 conversion interface is connected to the PCIE X16 slot, and a conversion end of the PCIE X16 conversion interface is connected to the bus terminal.

2. A serial-parallel port device based on a PCIE_16X slot according to claim 1, characterized in that: The adapter board also includes a level selection component; The input end of the level selection component is connected to the PCIE X16 end of the PCIE X16 conversion interface; The output end of the level selection component is connected to the conversion end of the PCIE X16 conversion interface.

3. A serial-parallel port device based on a PCIE_16X slot according to claim 2, characterized in that: The level selection component includes a level converter and a jumper; The PCIE X16 end of the PCIE X16 conversion interface is respectively connected to the output end of the level converter and the first input end of the jumper; The output end of the level converter is connected to the second input end of the jumper; The output end of the jumper is connected to the conversion end of the PCIE X16 conversion interface.

4. A serial-parallel port device based on a PCIE_16X slot according to claim 1, 2 or 3, characterized in that: The conversion end of the PCIE X16 conversion interface includes a PCIE X16 to DB44 interface; The bus terminal includes a DB44 terminal.

5. A serial-parallel port device based on a PCIE_16X slot according to claim 1, characterized in that: The mainboard is also provided with at least one second PCIE X16 slot connected to the main control chip; The second PCIE X16 slot is used to connect an independent graphics card.

6. A serial-parallel port device based on a PCIE_16X slot according to claim 1 or 5, characterized in that: The signal line of the main control chip is connected to the signal pins X9 to X16 of the PCIE X16 slot.

7. A serial-parallel port device based on a PCIE_16X slot according to claim 1, characterized in that: The pigtail cable includes a DB25 parallel port terminal and at least one DB9 serial port terminal.

8. The serial-parallel port device based on PCIE_16X slot according to claim 1, characterized in that: The pigtail cable includes a parallel port terminal and at least two serial port terminals of different types.

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