Hi,
I have a question regarding AM35x USB IAAD(Interrupt on Asynchronous Advance Doorbell) interrupt.
In our observation, it takes a few micro sec to generate IAAD interrupt after writing USBCMD.IAAD bit.
After writing the IAAD bit, what does USB controller do during term?
Detect some external USB signal/condition to occur IAAD interrupt?
Or, it just wait for a few micro second?
Because after IAAD interrupt AM35x sometimes hung up in our system.
I would like to consider workaround.
Best regards, RY