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void  USBD_PHDC_PreambleWr (CPU_INT08U           class_nbr,
                            void                *p_data_opaque,
                            CPU_INT16U           data_opaque_len,
                            LATENCY_RELY_FLAGS   latency_rely
                            CPU_INT08U           nbr_xfers,
                            CPU_INT16U           timeout,
                            USBD_ERR            *p_err);