EHCI_PAGE_SIZE
while (average > EHCI_PAGE_SIZE) {
average -= EHCI_PAGE_SIZE;
buf_offset += EHCI_PAGE_SIZE;
#define EHCI_QTD_PAYLOAD_MAX ((EHCI_QTD_NBUFFERS-1)*EHCI_PAGE_SIZE)
#if ((USB_PAGE_SIZE < EHCI_PAGE_SIZE) || (EHCI_PAGE_SIZE == 0) || \