One of the selling points of the MicroZed is the high quality high frequency connectors JX2 and JX2, since unlike many boards they allow many high frequency signals to be connected to the Zynq.
I'd like to ensure high speed signal integrity for signals going from a carrier board through JX 1 and JX2 to the Zynq. The key parts are the Zynq input pin standard (LVDS etc) and the track impedance on the carrier board (my responsibility) and the track impedance for the 2" tracks on the MicroZed board. At GHz bit rates, a 2" track is electrically long, and simulations show the difference between 40ohms and 80ohms is significant.
Now the DDR tracks are 40ohms, but what's the "typical" impedance of the tracks from the JX1/2 connectors? N.B. I'm neither after specifications nor guarantees, but I would like an indication of likely impedance.
If that isn't known, what's the track width and pre-preg thickness, and I'll make a guesstimate from that.