ATEVK1105 Atmel, ATEVK1105 Datasheet - Page 506

• Manufacturer Part Number: ATEVK1105
• Description: KIT EVAL FOR AT32UC3A0
• Manufacturer: Atmel
• Series: AVR®32r
• Type: MCUr

Specifications of ATEVK1105

• Contents: Evaluation Board, Software and Documentation
• Processor To Be Evaluated: AT32UC3A0512
• Processor Series: AVR
• Data Bus Width: 32 bit
• Interface Type: USART, TWI, USB, SPI, Ethernet
• Operating Supply Voltage: 3.3 V
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Core Sub-architecture: AVR UC3
• Silicon Core Number: AT32UC3A0512
• Silicon Family Name: AVR
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT32UC3A0
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

30.7.1.4.6
30.7.1.5
30.7.1.5.1
Figure 30-7. Speed Selection in Device Mode
30.7.1.5.2
30.7.1.6
32058J–AVR32–04/11
USB Suspend mode :
Speed Control
DPRAM Management
Device Mode
Host Mode
In peripheral mode, the UDINT.SUSP bit indicates that the usb line is in the suspend mode. In
this case, the USB Data transceiver is automatically set in suspend mode to reduce the
consumption.
When the USB interface is in device mode, the speed selection (full-/low-speed) depends on
which of D+ and D- is pulled up. The LS bit allows to connect an internal pull-up resistor either
on D+ (full-speed mode) or on D- (low-speed mode). The LS bit should be configured before
attaching the device, what can be done by clearing the DETACH bit.
When the USB interface is in host mode, internal pull-down resistors are connected on both D+
and D- and the interface detects the speed of the connected device, which is reflected by the
SPEED bit-field.
Pipes and endpoints can only be allocated in ascending order (from the pipe/endpoint 0 to the
last pipe/endpoint to be allocated). The firmware shall therefore configure them in the same
order.
The allocation of a pipe/endpoint k
cates a memory area in the DPRAM and inserts it between the k
k
point memory windows (from k
i+1
•the VBus Transition interrupt (VBUSTI);
•the Wake-Up interrupt (WAKEUP);
•the Host Wake-Up interrupt (HWUPI).
pipe/endpoint memory window slides up and its data is lost. Note that the following pipe/end-
VBUS
D+
D-
i+2
) do not slide.
i
starts when its ALLOC bit is set. Then, the hardware allo-
UDCON.DETACH
UDCON.LS
i-1
and k
i+1
pipes/endpoints. The
AT32UC3A
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