Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet
Product codes
AT32UC3A3-XPLD
626
32072H–AVR32–10/2012
AT32UC3A3
27.4
Application Block Diagram
Depending on the USB operating mode (device-only, reduced-host modes) and the power
source (bus-powered or self-powered), there are different typical hardware implementations.
source (bus-powered or self-powered), there are different typical hardware implementations.
27.4.1
Device Mode
27.4.1.1
Bus-Powered device
Figure 27-2. Bus-Powered Device Application Block Diagram
USB
2.0 Core
USB_VBUS
DMFS
DPFS
USB_ID
USB_VBOF
I/O
Controller
UTMI
DMHS
DPHS
USB
Connector
VBus
D-
D+
ID
GND
39
ohms
39
ohms
3.3 V
Regulator
VDD