Method and device for determining length of interface cable
A technology of interface and cable, applied in the field of determination method and device of interface cable length, can solve the problem of restricting the structural layout of the motherboard, and achieve the effect of reliable transmission
Pending Publication Date: 2021-04-13
LENOVO (BEIJING) CO LTD
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Problems solved by technology
[0002] The server usually has a network interface that supports the Network Controller Sideband Interface (NCSI, Network Controller Sideband Interface) function, but in the conventional design specification requirements, the simplified independent media interface (RMII, Reduced Media Independent Interface) of NCSI is required. The cable length is within 20 inches, which severely limits the structural layout of the motherboard
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[0031] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0032] figure 1 It is a schematic diagram of the process of determining the length of the interface cable in this application, as shown in figure 1 shown, including:
[0033] Step 101, determine a first signal duration between the oscillator and the media interface and a second signal duration between the oscillator and the media interface via the baseboard management controller, wherein the first signal duration corresponds to at least A clock signal, the duration of the second signal at least corresponds to the clock signal and the data signal; the clock signal and the data signal at least meet a time alignment condition;
[0034] In this application, the method is mainly applied to electronic equipment, and the electronic equipment may be a desktop computer, a notebook computer, a server, and the like....
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The invention provides a method for determining the length of an interface cable, which comprises the steps of: determining a first signal duration from an oscillator to a media interface and a second signal duration from the oscillator to the media interface through a baseboard management controller, the first signal duration at least corresponding to a clock signal, the second signal duration at least corresponding to a clock signal and a data signal, and the clock signal and the data signal at least meeting a time alignment condition; determining a third signal duration between the baseboard management controller and the media interface based on the first signal duration and the second signal duration; and determining the cable length from the baseboard management controller to the media interface based on the third signal duration. Meanwhile, the invention further provides a device for determining the length of an interface cable.
Description
technical field [0001] The present application relates to computer hardware layout technology, in particular to a method and device for determining the length of an interface cable. Background technique [0002] The server usually has a network interface that supports the Network Controller Sideband Interface (NCSI, Network Controller Sideband Interface) function, but in the conventional design specification requirements, the simplified independent media interface (RMII, Reduced Media Independent Interface) of NCSI is required. The cable length is within 20 inches, which severely limits the structural layout of the motherboard. Contents of the invention [0003] In view of this, the embodiments of the present application are expected to provide a method and device for determining the length of an interface cable. [0004] In order to achieve the above object, the technical solution of the present application is achieved in this way: [0005] According to an aspect of the...
Claims
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Login to View More IPC IPC(8): G01B21/02
CPCG01B21/02
Inventor 李帅
Owner LENOVO (BEIJING) CO LTD