Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Scheda Tecnica
Codici prodotto
AT91SAM9N12-EK
537
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
33.7.3 UDP Function Address Register
Name:
UDP_FADDR
Address:
0xF803C008
Access:
Read-write
• FADD[6:0]: Function Address Value
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.
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.
• FEN: Function Enable
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.
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