SlimLine high-speed signal switching control circuit

Abstract

The invention discloses a SlimLine high-speed signal switching control circuit, and relates to the field of quality management, and the circuit comprises a mainboard which comprises a CPU0, a CPU1 and a SlimLine signal transmitting end; the SlimLine alternative switching card is used for automatically switching the NVME HDD signal and the SATA HDD signal according to the requirement, and the SATA HDD signal is used for switching the NVME HDD signal and the SATA HDD signal according to the requirement; according to the SlimLine high-speed signal switching control circuit, an NVME or an SATA HDD is automatically switched according to requirements by manufacturing an ''SlimLine either-or transfer card''; a high-speed passive switch with high performance is provided, is specially designed for PCI Express data switching application, supports data transmission as high as 5.0 Gbps, and is passive and low in power consumption; and the electronic relay is used for switching different hardware channels to replace mechanism switching.

Description

Technical Field

[0001] The present invention relates to quality management technology, and particularly to a SlimLine high-speed signal switching control circuit. Background Art

[0002] There are more and more types and functions of server products, and the hardware circuit design is relatively complex. At present, some server motherboards lead out NVME signals from the SlimLine interface; some lead out SATA signals; some integrate both NVME and SATA signals, which means supporting two types of HDDs, namely NVME and SATA. At this time, from the perspective of functional testing: Conventional manual testing method: Connect the first type of HDD → Test the function → Shut down → Disconnect the first type of HDD & Connect the second type of HDD → Test the function. Conventional automated testing method: Make a very complex and precise test fixture, control the motor through the host computer software, and select to connect two different types of HDDs respectively according to the timing, and then conduct functional testing. (For example, in the first step: Connect the NVME HDD to the motherboard SlimLine interface and test the function; in the second step: Connect the SATA HDD to the motherboard SlimLine interface and test the function).

[0003] Currently, manual testing is carried out manually by connecting different HDDs step by step according to the test instruction manual, but it is easy to make mistakes in actual operation; if automated testing is introduced, the testing is very difficult, and a special mechanism switching device has to be designed and added, resulting in a sharp increase in cost and low stability. Summary of the Invention

[0004] The purpose of the present invention is to provide a SlimLine high-speed signal switching control circuit to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A SlimLine high-speed signal switching control circuit, comprising:

[0006] A motherboard, the motherboard includes CPU0, CPU1 and a SlimLine signal transmitting end;

[0007] A SlimLine two-in-one switch card, the SlimLine two-in-one switch card is used to automatically switch NVME HDD signals and SATA HDD signals according to requirements.

[0008] Further, the SlimLine two-in-one switch card includes:

[0009] A main SlimLine interface circuit, the main SlimLine interface circuit is connected to the MAX4889A chip and the SlimLine signal on the motherboard;

[0010] MAX4889A chip, the MAX4889A chip is used to select between the secondary SlimLine1 interface circuit and the secondary SlimLine2 interface circuit;

[0011] Secondary SlimLine1 interface circuit, the secondary SlimLine1 interface circuit is used to connect the NVME HDD signal;

[0012] Secondary SlimLine2 interface circuit, the secondary SlimLine2 interface circuit is used to connect the SATA HDD signal.

[0013] Further, the COM1+ port of the MAX4889A chip is connected to the NC1+ port and the NO1+ port of the MAX4889A chip, the COM1- port of the MAX4889A chip is connected to the NC1- port and the NO1- port of the MAX4889A chip, the COM2+ port of the MAX4889A chip is connected to the NC2+ port and the NO2+ port of the MAX4889A chip, the COM2- port of the MAX4889A chip is connected to the NC2- port and the NO2- port of the MAX4889A chip, the COM3+ port of the MAX4889A chip is connected to the NC3+ port and the NO3+ port of the MAX4889A chip, the COM3- port of the MAX4889A chip is connected to the NC3- port and the NO3- port of the MAX4889A chip, the COM4+ port of the MAX4889A chip is connected to the NC4+ port and the NO4+ port of the MAX4889A chip, the COM4- port of the MAX4889A chip is connected to the NC4- port and the NO4- port of the MAX4889A chip.

[0014] Further, the main SlimLine interface circuit includes a SlimLine interface chip, the Tx port of the SlimLine interface chip is used as an output port and is connected to the MAX4889A chip, and the Rx port of the SlimLine interface chip is used as an input port and is connected to the MAX4889A chip.

[0015] Further, the secondary SlimLine1 interface circuit and the secondary SlimLine2 interface circuit have the same circuit structure.

[0016] Further, the specific detection process of the high-speed signal switching circuit includes:

[0017] S1, connect the main board, the SlimLine two-in-one switch card and two kinds of HDD signals;

[0018] S2, judge and switch the SEL signal of the SlimLine two-in-one switch card through high and low levels;

[0019] S3. If the judgment result in step S2 is low level, the main SlimLine of the SlimLine two - to - one switch card automatically connects to the secondary SlimLine1. If the judgment result in step S2 is high level, the main SlimLine of the SlimLine two - to - one switch card automatically connects to the secondary SlimLine2;

[0020] S4. Functional test.

[0021] Compared with the prior art, a SlimLine high - speed signal switching control circuit provided by the present invention makes a "SlimLine two - to - one switch card" through invention, and automatically switches between NVME or SATA HDD according to requirements; it has a high - performance high - speed passive switch, which is designed specifically for PCI Express data switching applications, supports data transmission up to 5.0 Gbps, and has passive characteristics and low power consumption; it maximizes simplicity, and uses an electronic relay to switch different hardware channels to replace mechanical switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure provided by the embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the circuit structure provided by the embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the main control chip structure provided by the embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the MAX4889A chip structure provided by the embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the SlimLine two - to - one switch card structure provided by the embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the overall process structure provided by the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will further introduce the present invention in detail in conjunction with the drawings.

[0030] Please refer to Figure 1-6 , a SlimLine high-speed signal switching control circuit, comprising:

[0031] A main board, which includes CPU0, CPU1, and a SlimLine signal transmitter;

[0032] A SlimLine two-in-one switch card, which is used to automatically switch NVME HDD signals and SATA HDD signals according to requirements.

[0033] The SlimLine two-in-one switch card includes:

[0034] A main SlimLine interface circuit, which is connected to the MAX4889A chip and the SlimLine signal on the main board;

[0035] The MAX4889A chip, which is used to select between the secondary SlimLine1 interface circuit and the secondary SlimLine2 interface circuit;

[0036] The secondary SlimLine1 interface circuit, which is used to connect the NVME HDD signal;

[0037] The secondary SlimLine2 interface circuit, which is used to connect the SATA HDD signal.

[0038] The COM1+ port of the MAX4889A chip is connected to the NC1+ port and the NO1+ port of the MAX4889A chip, the COM1- port of the MAX4889A chip is connected to the NC1- port and the NO1- port of the MAX4889A chip, the COM2+ port of the MAX4889A chip is connected to the NC2+ port and the NO2+ port of the MAX4889A chip, the COM2- port of the MAX4889A chip is connected to the NC2- port and the NO2- port of the MAX4889A chip, the COM3+ port of the MAX4889A chip is connected to the NC3+ port and the NO3+ port of the MAX4889A chip, the COM3- port of the MAX4889A chip is connected to the NC3- port and the NO3- port of the MAX4889A chip, the COM4+ port of the MAX4889A chip is connected to the NC4+ port and the NO4+ port of the MAX4889A chip, and the COM4- port of the MAX4889A chip is connected to the NC4- port and the NO4- port of the MAX4889A chip.

[0039] The main SlimLine interface circuit includes a SlimLine interface chip. The Tx port of the SlimLine interface chip is connected to the MAX4889A chip as an output port, and the Rx port of the SlimLine interface chip is connected to the MAX4889A chip as an input port.

[0040] The secondary SlimLine1 interface circuit has the same circuit structure as the secondary SlimLine2 interface circuit.

[0041] The specific detection process of the high-speed signal switching circuit includes:

[0042] S1, Connect the main board, the SlimLine two-in-one switch card, and two types of HDD signals;

[0043] S2, Determine and switch the SEL signal of the SlimLine two-in-one switch card through high and low levels;

[0044] S3, If the judgment result of step S2 is low level, the main SlimLine of the SlimLine two-in-one switch card will be automatically connected to the secondary SlimLine1. If the judgment result of step S2 is high level, the main SlimLine of the SlimLine two-in-one switch card will be automatically connected to the secondary SlimLine2;

[0045] S4, Function test.

[0046] The SlimLine two-in-one switch card is equipped with the main SlimLine and the peripheral circuits of the secondary SlimLine interface 1 and the secondary SlimLine interface 2, and uses multiple groups of MAX4889A cores as the core. Each MAX4889A device selects the signal path through a digital control input (SEL). According to the state of the SEL input terminal, the MAX4889A will route the signals of each input channel to the corresponding output terminal. The control signal can be a logic level (such as high and low levels). By setting different level combinations, simultaneous, independent, or grouped control of all SPDT switches can be achieved to meet the specific system configuration requirements, so that data can be flexibly allocated between different destinations, and finally the main SlimLine is respectively connected to the secondary SlimLine 1 or the secondary SlimLine 2.

[0047] Working principle: When in use,

[0048] 1. The SlimLine two-in-one switch card uses multiple groups of MAX4889A high-speed passive switches, which are designed specifically for PCI Express (PCle) data switching applications. By switching the SEL high and low of the digital signal, the SlimLine signal is split into two, and is respectively connected to two types of HDD signals;

[0049] 2. Switching the transfer card according to the time sequence can connect the main SlimLine interface to the corresponding secondary SlimLine 1 or secondary SlimLine 2 interface, which is equivalent to manually connecting the motherboard SlimLine to the NVME HDD or the motherboard SlimLine to the SATA HDD respectively, and finally realizing the complete test of the motherboard SlimLine function;

[0050] 3. The transfer card circuit has extremely low on-capacitance, excellent return loss and low insertion loss characteristics, ensuring the signal integrity is maintained during high-speed switching. These characteristics contribute to ideal performance during eye diagram and S-parameter measurements, including low insertion loss (ensuring signal strength), high return loss (reducing reflections), and good isolation (reducing crosstalk between channels);

[0051] 4. In summary, the operating principle of the MAX4889A is based on its role as a high-speed passive switch, selectively connecting input signals to different output ports through digital control signals to achieve efficient, low-loss, and delay-free switching of the PCle data stream between multiple destinations. Its design characteristics ensure signal integrity in high-speed data communication environments, making it an ideal choice for PCle and other high-speed differential signal applications.

[0052] Only some exemplary embodiments of the present invention have been described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A SlimLine high-speed signal switching control circuit, characterized in that: include: A mainboard, the mainboard comprising CPU0, CPU1 and a SlimLine signal transmitter; SlimLine two-choice adapter card, the SlimLine two-choice adapter card is used to automatically switch NVME HDD signals and SATA HDD signals according to needs.

2. A SlimLine high-speed signal switching control circuit according to claim 1, characterized in that: The SlimLine 2-in-1 Converter Card includes: A main SlimLine interface circuit, which is connected to the MAX4889A chip and the SlimLine signal on the mainboard; A MAX4889A chip, the MAX4889A chip is used to select between the secondary SlimLine1 interface circuit and the secondary SlimLine2 interface circuit; A secondary SlimLine1 interface circuit, the secondary SlimLine1 interface circuit is used to connect the NVME HDD signal; A secondary SlimLine2 interface circuit, wherein the secondary SlimLine2 interface circuit is used to connect a SATA HDD signal.

3. A SlimLine high-speed signal switching control circuit according to claim 2, characterized in that: The COM1+ port of the MAX4889A chip is connected to the NC1+ port and the NO1+ port of the MAX4889A chip, the COM1- port of the MAX4889A chip is connected to the NC1- port and the NO1- port of the MAX4889A chip, the COM2+ port of the MAX4889A chip is connected to the NC2+ port and the NO2+ port of the MAX4889A chip, and the COM2- port of the MAX4889A chip is connected to the NC2- port and the NO2- port of the MAX4889A chip, The COM3+ port of the MAX4889A chip is connected to the NC3+ port and the NO3+ port of the MAX4889A chip, the COM3- port of the MAX4889A chip is connected to the NC3- port and the NO3- port of the MAX4889A chip, the COM4+ port of the MAX4889A chip is connected to the NC4+ port and the NO4+ port of the MAX4889A chip, and the COM4- port of the MAX4889A chip is connected to the NC4- port and the NO4- port of the MAX4889A chip.

4. The SlimLine high-speed signal switching control circuit according to claim 3, characterized in that: The main SlimLine interface circuit includes a SlimLine interface chip, a Tx port of the SlimLine interface chip is connected to the MAX4889A chip as an output port, and an Rx port of the SlimLine interface chip is connected to the MAX4889A chip as an input port.

5. The SlimLine high-speed signal switching control circuit according to claim 4, characterized in that: The secondary SlimLine1 interface circuit has the same circuit structure as the secondary SlimLine2 interface circuit.

6. The SlimLine high-speed signal switching control circuit according to claim 5, characterized in that: The specific detection process of high-speed signal switching circuit includes: S1, connects the motherboard, SlimLine 2-or-1 adapter card and two HDD signals; S2, switches the SEL signal of the SlimLine two-choice card through high and low level judgment; S3, if the judgment result of step S2 is a low level, the main SlimLine of the SlimLine two-choice-one conversion card is automatically connected to the secondary SlimLine1, and if the judgment result of step S2 is a high level, the main SlimLine of the SlimLine two-choice-one conversion card is automatically connected to the secondary SlimLine2; S4, functional test.

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