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Last Post 13 Jul 2008 09:18 PM by  SD_EE
MCF5329 UART2
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SD_EE



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12 Jul 2008 09:56 PM
    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.

    SD_EE



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    13 Jul 2008 09:18 PM
    The CAN transceiver does loop the data back to the recieve line. Question answered, problem solved.
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