I have an application that requires three UARTs. I have verified the operation of UART0 and UART1 on the eval board, but UART2 has some strange behavior.

Anything that I transmit on UART2 also shows up on the recieve line - not only in the read buffer, but I can see what I transmit on the recieve line with an oscilloscope. Why is whatever I transmit also showing up on the receiver? Is this due to the external CAN and RS232 circuitry on the eval board? Is this a problem with the 5329 silicon?

By the way, I tested this on two development kits yesterday and saw the same results.