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odd/even bit in assynchronous

Question asked by SantaGG on Sep 3, 2016
Latest reply on Oct 31, 2016 by SantaGG
Help me someone pls a little bit. I don't understand why in most isochronous assynchronous transfer with feedback examples they call feedback transfer function in SOF callback with frame odd/even setting being for the next frame. In't SOF being executed first in the frame and then host sends IN request for feedback data? Shouldn't frame odd/even bits be set for current frame or be done at the end of the frame after GINTSTS.EOPF / OTG_FS_GINTSTS.IISOIXFR interrupt?