4: I must maintain the toggle bit for each established pipe (beside for the iso).1 - 3 are correct. 4 is misleading: _You_ don't have to maintain anything; the host controller driver automatically takes care of that for you.
Ok. With maintain the toggle bit i mean i have to have a boolean variable and when it's true then i set the toggle bit in the actual transfer descriptor. Or how does the controller know when to set this bit?
Thanks a lot.
CU
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