We hand built 5 boards, and 1 board works. It;'s not the crystal, not power, not routing.
The part is either 100% or not powering up. I do have an external reset line that is controlled by a Micro. But it's fine.
It appears to be related to grounding. I verified that the ground pad is getting wetted during soldering (we put large vias under the part so the girls can solder it.
I fixed one board by putting a very hot iron on the bottom of the board and a slight bit of solder flowed through one of the vias.
To tell if it's going to work, I just measure the voltage across the test pin 7 pulldown. If it's .3 or .5 volts, nada. If it's nearly zero, then the part works.
I even bought your eval board to measure all the pins voltages and used the schematic from the datasheet and also verified the 0028 schematic (which is the non -Q version). The eval board is also a non -Q version.
Anyway, I'm on the hot seat for a pretty complex board, and of course everything goes through the hub. Only 1 port is actually USB 3.0, the rest are USB 1.1,2.0.
Any assistance would be great.
Should I cad this out and use the -Q version? I really want industrial temperature.
