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Atmel MCU Evaluation Kit AT32UC3L-EK AT32UC3L-EK Data Sheet

Product codes
AT32UC3L-EK
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Page of 36
 
26 
Atmel AVR32025 
32150B-AVR-03/12 
Figure 3-18. Atmel AT32UC3L-EK bottom view USB interface location. 
 
3.7.2 Schematics 
In Section 
, 
, the USB interface block is 
described on page 6. 
3.7.3 UC3L-specific information 
3.7.3.1 Atmel T32UC3L064 pinout for the USB interface block 
Table 3-18. UC3L pinout for the USB interface block. 
QFP48 pin 
GPIO 
GPIO alternate functions 
Feature 
6 PB00 
USART3.TXD 
USART3 
TX 
line 
16 
PB01 
USART3.RXD 
USART3 RX line 
3.7.4 Configuration and test points 
3.7.4.1 AT32UC3LB1256 default firmware configuration 
The default firmware pre-loaded on the Atmel AT32UC3B1256 is dynamically 
configurable upon power up: 
•  The USB DFU boot loader can be enabled by closing the J12 jumper. Use 
flip/batchisp to read/write resources on the AT32UC3B1256 through the boot 
loader 
IMPORTANT 
Programming the AT32UC3B1256 will overwrite the default firmware. 
•  If the USB MODE pushbutton is pressed at power up, the USB virtual com port 
firmware will execute. Otherwise, the USB HID QTouch Debug firmware will 
execute 
3.7.4.2 Test points 
A few test points covering the USB interface block have been placed on the Atmel 
AT32UC3L-EK for the verification of important signals. 
J13 
UC3B