I have 20 new prototype boards using the CY7C65632-28. A couple of the board came up and the USB works properly. On most the USB Hub doesn't work. The 12MHz oscillator will only run when the hub is held in reset. The HUB is configured as self powered and the gang input is connected to ground with a 100K resistor. Reset uses the recommended reset from Cypress. 10K to 5V and 47K in parallel with 1uF to ground.
Anybody had similar experience?
Consider the following parameters when you select the crystal:
20 pF rating on the crystal
12 MHz ± 0.05%
Parallel resonant, fundamental mode
20 pF capacitors for load caps
600 μW drive
My customer met same problem. Crystal just OSC when reset low.
And finally the found the D+ and D- connect reverse. You can check it.