Datasheet

SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
1184
 EPTYPE[2:0]: Endpoint Type
Read/Write
 DTGLE: Data Toggle
Read-only:
0: Identifies DATA0 packet
1: Identifies DATA1 packet
Refer to Chapter 8 of the Universal Serial Bus Specification, Rev. 2.0 for more information on DATA0, DATA1 packet
definitions.
 EPEDS: Endpoint Enable Disable
Read:
0: Endpoint disabled
1: Endpoint enabled
Write:
0: Disables endpoint
1: Enables endpoint
Control endpoints are always enabled. Reading or writing this field has no effect on control endpoints.
Note: After reset, all endpoints are configured as control endpoints (zero).
 RXBYTECNT[10:0]: Number of Bytes Available in the FIFO
Read-only
When the host sends a data packet to the device, the USB device stores the data in the FIFO and notifies the microcon-
troller. The microcontroller can load the data from the FIFO by reading RXBYTECENT bytes in the UDP_FDRx.
Value Name Description
0 CTRL Control
1 ISO_OUT Isochronous OUT
5 ISO_IN Isochronous IN
2 BULK_OUT Bulk OUT
6 BULK_IN Bulk IN
3 INT_OUT Interrupt OUT
7 INT_IN Interrupt IN