Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet

32072H–AVR32–10/2012

USBCON

Read/Write

0x0800

0x03004000

This bit has no effect when UIDE is one (USB_ID input pin activated).

0: The module is in USB host mode.

1: The module is in USB device mode.

This bit can be written even if USBE is zero or FRZCLK is one. Disabling the USBB (by writing a zero to the USBE bit) does not 

reset this bit.

0: The USB mode (device/host) is selected from the UIMOD bit.

1: The USB mode (device/host) is selected from the USB_ID input pin.

This bit can be written even if USBE is zero or FRZCLK is one. Disabling the USBB (by writing a zero to the USBE bit) does not 

reset this bit.

1: The TIMPAGE and TIMVALUE fields are unlocked.

0: The TIMPAGE and TIMVALUE fields are locked.

The TIMPAGE and TIMVALUE fields can always be read, whatever the value of UNLOCK.

This field contains the page value to access a special timer register.

This field selects the timer value that is written to the special time register selected by TIMPAGE. See 

 for 

details.

Writing a zero to this bit will reset the USBB, disable the USB transceiver and, disable the USBB clock inputs. Unless explicitly 

stated, all registers then will become read-only and will be reset.

1: The USBB is enabled.

0: The USBB is disabled.

31

30

29

28

27

26

25

24

-

-

-

-

-

-

UIMOD

UIDE

23

22

21

20

19

18

17

16

-

UNLOCK

TIMPAGE

-

-

TIMVALUE

15

14

13

12

11

10

9

8

USBE

FRZCLK

VBUSPO

OTGPADE

VBUSHWC

7

6

5

4

3

2

1

0

STOE

ROLEEXE

BCERRE

VBERRE

VBUSTE

IDTE