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Altera_Forum
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15 years ago

Stratix4GX PCIe development board to used as root port

I wanted to know if anyone has used the Altera Stratix4GX PCIe card as a root port. I have used it as endpoint but have not used as a root- port. As an endpoint all I have to do is plug in t...
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Altera_Forum
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15 years ago

Haven’t heard of speedbridge yet. Interesting stuff. here are the docs (http://www.cadence.com/rl/resources/datasheets/sb_express_ds.pdf).

I think you misinterpret its function, though. The device can emulate two different things: (a) a PCIe end point, transparently visible to the PC the speedbridge is plugged into. (b) a PCIe root port when connected to a nice little board (the one with the blue-colored frame) with two sockets, probably connected 1:1, where the second plug is for a PCIe adapter card (e.g. SATA, USB3, 10G Ethernet) you want to test your root port against.

The docs don’t speak – not even suggest – that the speedbridge can act as a root port, connected to a PC’s chipset root port. The specified transparency relates to the use of the drivers running on the PC running the speedbridge card in endpoint mode, emulating the real device function.