I’m designing a custom carrier board for multiple TX2 modules on a single pcb - a single module does not have enough power to handle all the computational tasks. These modules need to talk to each other via Gigabit Ethernet.
Unfortunately, GMII, RGMII, or SGMII is not available on the TX2 connector, only the PHY’s MDI pairs.
What is the recommended way to connect the TX2’s PHY signals to an Ethernet Switch chip? Capacitive coupling via 100n 0402 X7R capacitors as I’ve seen in some appnotes for transformerless fast Ethernet coupling? Inductive coupling via a single 1000BaseT Transformer?
The switch chip would be a Micrel/Microchip KSZ9567R (http://www.microchip.com/wwwproducts/en/KSZ9567), unless there is a good reason to use something different.
Space constraints are tight, so I’d prefer a small and lightweight solution.
OptoPrecision GmbH, Bremen, Germany