[Cryptech Tech] dev-bridge board

Randy Bush randy at psg.com
Fri Dec 18 13:58:56 UTC 2015


> I saw the recent discussion regarding the USB interface.  Not really
> aware to the constraints and choices made earlier, so excuse my
> ignorance, but why do you guys use the FT232 (or consider a MPU-based
> USB interface) when the main CPU STM32F429 has 2 native USB interfaces
> available - one full speed and one high speed?

this is a security device.  usb is a big hole.  we want i/o to go
through as small a hole as possible.

randy


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