Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet

537

SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]

11063K–ATARM–05-Nov-13

UDP_FADDR

0xF803C008

Read-write 

The Function Address Value must be programmed by firmware once the device receives a set address request from the host, and 
has achieved the status stage of the no-data control sequence. Refer to the Universal Serial Bus Specification, Rev. 2.0 for more 
information. After power up or reset, the function address value is set to 0.

Read:

0 = Function endpoint disabled.

1 = Function endpoint enabled.

Write:

0 = Disables function endpoint. 

1 = Default value.

The Function Enable bit (FEN) allows the microcontroller to enable or disable the function endpoints. The microcontroller sets this 
bit after receipt of a reset from the host. Once this bit is set, the USB device is able to accept and transfer data packets from and 
to the host.

31

30

29

28

27

26

25

24

–

–

–

–

–

–

–

–

23

22

21

20

19

18

17

16

–

–

–

–

–

–

–

–

15

14

13

12

11

10

9

8

–

–

–

–

–

–

–

FEN

7

6

5

4

3

2

1

0

–

FADD