USB at 12Mbps

General discussions about V-USB, our firmware-only implementation of a low speed USB device on Atmel's AVR microcontrollers
jmg85

USB at 12Mbps

Postby jmg85 » Fri May 15, 2015 8:44 am

Hi,

I understand that V-USB can be used with 12-20MHz microcontrollers in order to run 1.5Mbps USB communication.
I wonder if I can achieve a 12Mbps USB reception with a faster microcontroller. Let’s say 120MHz or so.
Could it be possible?

Many thanks in advance,
Jorge

blargg
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Re: USB at 12Mbps

Postby blargg » Mon May 18, 2015 8:44 am

V-USB has some hand-timed assembly code for each supported speed. Adding a speed requires new code. Also, I wasn't aware of 120MHz AVR microcontrollers.


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