42 lines
2.0 KiB
Markdown
42 lines
2.0 KiB
Markdown
Question stack exchange EE
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Hello
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My goal is to set up a high-speed network link between two identical processors (Qualcomm SOMs) that will be present on the same PCB. Since I have severe restrictions on weight I cannot use the standard ethernet way with an RJ45 and a cable to set this up. The two possible interfaces on the processors for the network link are PCIe 3.0 or a USB 3.1 GEN2 interface.
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My current idea is to use an ethernet bridge IC like the [LAN7430 from microchip][1] at the PCIe-port on both processors and add a single ethernet transformer (e.g. [H5084NL from pulse electronics][2]) in between. This would set up an ethernet link 1000BASE-T between the two processors. According to [this][3] and [this question][4] the magnetics are recommended to provide a stable connection. They also mention the problem with connections that are shorter than 1m, which I don't know yet how to solve.
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Is this the best solution for this problem? Since I do not have access to a MAC-port I cannot implement the direct MAC to MAC connection as proposed by [user dim in this question][4].
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With this solution, using the PCIe port, I could achieve 1Gbit/s with the 1000BASE-T Ethernet. According to the USB specifications, the USB 3.1 GEN2 interface is capable of achieving up to 10 Gbit/s, which would be preferable for my application.
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Is it possible to implement a reliable USB network without cable
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[1]: [https://www.microchip.com/wwwproducts/en/LAN7430](https://www.microchip.com/wwwproducts/en/LAN7430)
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[2]: [https://productfinder.pulseeng.com/product/H5084NL](https://productfinder.pulseeng.com/product/H5084NL)
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[3]: [https://electronics.stackexchange.com/q/90330/255394](https://electronics.stackexchange.com/q/90330/255394)
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[4]: [https://electronics.stackexchange.com/q/378310/255394](https://electronics.stackexchange.com/q/378310/255394)
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[https://www.one-tab.com/page/pPYRBiErRWahS_zJR4kc7g](https://www.one-tab.com/page/pPYRBiErRWahS_zJR4kc7g) |