Datasheet

1016
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
40.7.9 UDP Reset Endpoint Register
Name: UDP_RST_EP
Address: 0x40034028
Access: Read/Write
 EP0: Reset Endpoint 0
 EP1: Reset Endpoint 1
 EP2: Reset Endpoint 2
 EP3: Reset Endpoint 3
 EP4: Reset Endpoint 4
 EP5: Reset Endpoint 5
 EP6: Reset Endpoint 6
 EP7: Reset Endpoint 7
This flag is used to reset the FIFO associated with the endpoint and the bit RXBYTECOUNT in the UDP_CSRx. It also resets the
data toggle to DATA0. It is useful after removing a HALT condition on a BULK endpoint. Refer to Chapter 5.8.5 in the USB Serial
Bus Specification, Rev.2.0.
Warning: This flag must be cleared at the end of the reset. It does not clear UDP_CSRx flags.
0: No reset
1: Forces the corresponding endpoint FIF0 pointers to 0, therefore RXBYTECNT field is read at 0 in UDP_CSRx
Resetting the endpoint is a two-step operation:
1. Set the corresponding EPx field.
2. Clear the corresponding EPx field.
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EP7 EP6 EP5 EP4 EP3 EP2 EP1 EP0