Datasheet

555

AT32UC3A

30.8.2 USB Device Registers

30.8.2.1 USB Device General Control Register (UDCON)

Offset: 0x0000

Access Type: Read/Write

Reset Value: 0x00000100

• UADD: USB Address

Set to configure the device address.

Cleared by hardware upon receiving a USB reset.

• ADDEN: Address Enable

Set to activate the UADD field (USB address).

Cleared by hardware upon receiving a USB reset.

Clearing by software has no effect.

• DETACH: Detach

Set to physically detach the device (disconnect internal pull-up resistor from D+ and D-).

Clear to reconnect the device.

• RMWKUP: Remote Wake-Up

Set to send an upstream resume to the host for a remote wake-up.

Cleared by hardware upon receiving a USB reset or once the upstream resume has been sent.

Clearing by software has no effect.

• LS: Low-Speed Mode Force

Set to force the low-speed mode.

31 30 29 28 27 26 25 24

– – – – – – – –

23 22 21 20 19 18 17 16

– – – – – – – –

15 14 13 12 11 10 9 8

– – – LS – – RMWKUP DETACH

rw rwu rw

0 0 1

7 6 5 4 3 2 1 0

ADDEN UADD

rwu rwu

0 0 0 0 0 0 0 0

32058K

AVR32-01/12