2.7.3.1 Atmel AT32UC3L064 Pinout for the USB Interface Block

Table 2-18. UC3L Pinouts for the J15 Header
QFP48 pinGPIOGPIO Alternate FunctionsFeature
6PB00USART3.TXDUSART3 TX line
16PB01USART3.RXDUSART3 RX line