CN213582152U

CN213582152U - PCIE signal bit width automatic switching device of desktop and server system

Info

Publication number: CN213582152U
Application number: CN202022423558.4U
Authority: CN
Inventors: 刘星辉
Original assignee: Xiamen Liandaxing Technology Co ltd
Current assignee: Xiamen Liandaxing Technology Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-06-29
Anticipated expiration: 2030-10-27

Abstract

The utility model provides a PCIE signal bit wide automatic switching control equipment of desktop and server system, including PCIE RISER expansion module, PCIE X24 socket, FPGA logic controller, PCIE signal generator; the PCIE X24 socket transmits the ID value of the PCIE RISER expansion module to the FPGA logic controller, and the FPGA logic controller sends a GPIO signal to control a configuration pin STRAP of the PCIE signal generator to realize automatic switching of PCIE RISER bit width. The utility model discloses a detect outside PCIE RISER expansion module's ID information, pass through GPIO signal control PCIE signal generator's configuration pin STRAP signal by the FPGA controller, realize the automatic switch-over of PCIE signal, reach the purpose of matcing different PCIE RISER expansion module.

Description

PCIE signal bit width automatic switching device of desktop and server system

Technical Field

The utility model relates to a PCIE signal bit wide automatic switch-over, in particular to PCIE signal bit wide automatic switch-over device of desktop and server system.

Background

PCIE RISER generally refers to function expansion cards or riser cards that plug into PCIE slots on desktop and server motherboards. Is a new generation of bus interface. Compared with PCI and earlier shared parallel architecture of computer bus, each device has its own dedicated connection, and does not need to request bandwidth from the whole bus, and can raise data transmission rate to a very high frequency, so as to reach high bandwidth which can not be provided by PCI.

PCIE slots are different according to different bus bit widths, including X1, X4, X8, and X16, and different BOMs are configured for existing desktop and server motherboards according to the PCIE slot bus bit width, which becomes a pain point in the industry.

Therefore, the inventor researches an automatic switching device for the bit width of the PCIE signal.

SUMMERY OF THE UTILITY MODEL

The utility model provides a PCIE signal bit wide automatic switching control equipment of desktop and server system, this automatic switching control equipment can insert the PCIE RISER bit wide in the PCIE slot opening to automatic identification to corresponding communication mode is switched to automatically.

The technical scheme adopted for achieving the purpose is as follows:

a PCIE signal bit width automatic switching device of a desktop and a server system comprises an PCIE RISER expansion module, a PCIE X24 slot, an FPGA logic controller and a PCIE signal generator; the PCIE signal generator outputs 3 groups of X8 to an X24 slot of the PCIE, when the PCIE RISER expansion module is connected to the PCIE X24 slot, the ID value of the PCIE RISER expansion module is transmitted to the FPGA logic controller by the PCIE X24 slot, and the FPGA logic controller sends out GPIO signals to control a configuration pin STRAP of the PCIE signal generator to realize automatic switching of PCIE RISER bit widths.

Further, the FPGA logic controller sends out 2 GPIO signals to control the configuration pins STRAP1, STRAP2 of the PCIE signal generator.

Further, the ID value of the PCIE RISER expansion module corresponds to the truth table as:

further, the state 1 is a default configuration.

Further, the truth tables of the configuration pins STRAP1 and STRAP2 of the PCIE signal generator are as follows:

further, the output state 1 is a default configuration.

The utility model discloses a detect outside PCIE RISER expansion module's ID information, pass through GPIO signal control PCIE signal generator's configuration pin STRAP signal by the FPGA controller, realize that PCIE3.0 signal output realizes the automatic switch-over of single X16 signal or two X8 signals or 4X 4 signals, reach the purpose of matcing different PCIE RISER expansion modules.

Drawings

The following describes the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is the working principle of the present invention for automatic switching of PCIE signals.

Detailed Description

The utility model discloses a following concrete example introduces

As shown in fig. 1, a PCIE signal bit width automatic switching apparatus 1 of a desktop and server system includes an PCIE RISER expansion module 2, a PCIE X24 slot 3, an FPGA logic controller 4, and a PCIE signal generator 5.

The utility model discloses a theory of operation is:

in step one, a default state (corresponding to the truth table state 1) is set for the

PCIE signal generator

5, and 3 sets of X8 signals (PCIE signals of 24lane in total) are output to the X24 slot 3 of PCIE.

Step two, the ID signals are set on the corresponding 3 PCIE RISER expansion modules 2, and the ID signals are totally two ID pins (ID1, ID0), and the corresponding ID truth table is as follows:

namely:

x24 to 3X 8 slot modules with a corresponding ID of 00;

x24 is converted into 1X 16+ 1X 8 slot modules, and the corresponding ID is 01;

x24 turns 1X 16+ 2X 4 slot modules, the corresponding ID is 10;

step three, when the PCIE RISER expansion module 2 is connected to the PCIE X24 slot 3, the ID value on the PCIE RISER expansion module 2 is input to the FPGA logic controller 4, and after receiving the ID signal, the FPGA logic controller 4 sends out two GPIO signals to control the configuration pins STRAP1 and STRAP2 of the PCIE signal generator 5 to implement automatic switching of PCIE bit widths X16, X8, and X4. The truth table of the PCIE signal generator STRAP is as follows:

step four, the PCIE signal generator 5 receives the corresponding STRAP PIN state, outputs a PCIE signal with a corresponding bit width to the PCIE X24 slot port 3, and then outputs the PCIE signal to the PCIE RISER expansion module 2; therefore, through the conversion, different PCIE RISER expansion modules 2 are accessed, and the PCIE signal generator 5 automatically outputs the PCIE signal with the corresponding bit width; the diversified PCIE RISER expansion module 2 is realized to meet the requirements of matching different PCIE configurations and meet the requirements of various clients.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present application, and all equivalent changes made according to the design key of the present application fall within the protection scope of the present application.

Claims

1. PCIE signal bit width automatic switching control equipment of desktop computer and server system, its characterized in that: the device comprises an PCIE RISER expansion module, a PCIE X24 slot, an FPGA logic controller and a PCIE signal generator; the PCIE signal generator outputs 3 groups of X8 to an X24 slot of the PCIE, when the PCIE RISER expansion module is connected to the PCIE X24 slot, the ID value of the PCIE RISER expansion module is transmitted to the FPGA logic controller by the PCIE X24 slot, and the FPGA logic controller sends out GPIO signals to control a configuration pin STRAP of the PCIE signal generator to realize automatic switching of PCIE RISER bit widths.

2. The PCIE signal bit width automatic switching apparatus of claim 1, wherein: the FPGA logic controller sends out 2 GPIO signals to control the configuration pins STRAP1 and STRAP2 of the PCIE signal generator.