Method and system for counting backplane system link loss
A link loss and backplane technology, applied in computing, computer-aided design, CAD circuit design, etc., can solve problems such as inflexible design, inability to realize board-card association, and inability to meet ultra-high-speed backplane design requirements, and achieve comprehensive The resulting effect
Active Publication Date: 2022-04-29
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology
[0003] The existing method is to associate the relationship between the backplane and the board through the definition of the net name, which is inflexible in design and cannot realize arbitrary board association; and when calculating the link loss of the backplane system, only the length of the PCB trace can be extracted, and the length of the PCB cannot be obtained. Chip signal channel loss and connector channel loss cannot quickly, accurately and comprehensively count link loss, which can no longer meet the current design requirements for large-capacity and ultra-high-speed backplanes
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[0050] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0051] An embodiment of the present invention provides a method for counting link loss of a backplane system, including the following steps:
[0052]Define all the slot information in the backplane schematic diagram, import the board PCB design file and the backplane schematic diagram, read the coordinates of the connectors in all slots on the backplane, and judge the insertion direction of the board in each slot;
[0053] Combining the board insertion direction of each slot, match the coordinates of the board connector and the coordinates of the backplane connector to obtain the mapping relationship between the board connector and the backplane connector;
[0054] Read the PIN pin coordinates of the backplane connector and the PIN pin coordinates of the board connector, and obtain the PIN pin mapping relationship between the backplane connecto...
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The invention discloses a method and system for counting the link loss of a backplane system, and relates to the technical field of electronic communication. The invention reads the coordinates of the connectors in all slots of the backplane, judges the insertion direction of the board card in each slot, and matches the The coordinates of the board connector and the coordinates of the backplane connector obtain the mapping relationship between the board connector and the backplane connector, as well as the PIN pin mapping relationship between the backplane connector and the board connector; calculate according to the PIN pin mapping relationship Backplane system link loss, analyze whether the link loss meets the requirements. When calculating the link loss of the backplane system, the present invention combines the loss of the chip of the board card, the loss of the connector of the board card, and the loss of the PCB board material of the board card to realize accurate and comprehensive calculation of the link loss of the backplane system.
Description
technical field [0001] The invention relates to the technical field of electronic communication, in particular to a method and system for counting link loss of a backplane system. Background technique [0002] With the development of communication technology, the system rate of communication equipment has been continuously improved, and the rate of a single serdes channel has developed from 3.125Gbps, 10Gbps to 25Gbps, 56Gbps or even 112Gbps. As the rate increases, the transmission loss of the signal on the PCB increases, that is, the same link length, the higher the rate, the greater the loss. In order to ensure signal integrity, it is necessary to make statistics on the system link loss value to determine whether the system requirements are met. Therefore, in the feasibility analysis of the backplane system and the design of the high-speed backplane PCB, it is necessary to count the system link loss. [0003] The existing method is to associate the relationship between t...
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IPC IPC(8): G06F30/398G06F115/12
Inventor 姜文李军华
Owner FENGHUO COMM SCI & TECH CO LTD