I looked at the ST Micro ST32F217ZE. Looks nice but one of the two USB ports is only a full speed port. On top of that the other port, when used in high speed mode, requires the use of an external PHY. Other than that there is a lot of things to like about that part and the family in general. A particularly nice aspect of this part is the fact that the voltage regulator for the core 1.2V supply rail is embedded on-board the device.

I have also studied the Atmel AT91SAM9G45 part. This part has two USB ports one of which is only a HOST only full/high speed port. The other set of USB port pins can connect internally to either a second HOST mode full/high speed OR to a separate DEVICE more controller that is capable of supporting high speed mode. This USB option does not meet my needs for two ports that can both act as high speed target devices. Supplying power to this device requires that one have a separate onboard voltage regulator (VR) for the 1.0V core, a separate rail for the 1.8V for external memories and one for the chosen I/O voltage.

I also previously looked at the Stellaris parts at the TI site but did not find any dual USB port parts with any high speed capabilities.

Michael Karas