RXDPID=B_0x0_ISOCHRONOUS_OUT_ENDPOINTS
OTG device OUT endpoint 4 transfer size register
| XFRSIZ | Transfer size This field contains the transfer size in bytes for the current endpoint. The core only interrupts the application after it has exhausted the transfer size amount of data. The transfer size can be set to the maximum packet size of the endpoint, to be interrupted at the end of each packet. The core decrements this field every time a packet is read from the Rx FIFO and written to the external memory. |
| PKTCNT | Packet count Indicates the total number of USB packets that constitute the transfer size amount of data for this endpoint. This field is decremented every time a packet (maximum size or short packet) is written to the Rx FIFO. |
| RXDPID | Received data PID This is the data PID received in the last packet for this endpoint. STUPCNT[1:0]: SETUP packet count This field specifies the number of back-to-back SETUP data packets the endpoint can receive. 0 (B_0x0_ISOCHRONOUS_OUT_ENDPOINTS): DATA0 1 (B_0x1_ISOCHRONOUS_OUT_ENDPOINTS): DATA2 2 (B_0x2_ISOCHRONOUS_OUT_ENDPOINTS): DATA1 3 (B_0x3_ISOCHRONOUS_OUT_ENDPOINTS): MDATA |