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RM48 HDK and IMX6 UART line driver

Manjunathan K
Expert 2825 points

Other Parts Discussed in Thread: MAX232

Hi,

I am trying to establish UART communication between RM48 HDK and imx6 SBC. I am facing some problem, because there is no line driver in SBC. I tried with MAXIM MAX232 IC, but the data received are not exactly what i send from the transmitter. if i send some characters from HDK like a,m,v,c,etc but i received come symbols like >>>....$ etc in my SBC receiver side. How to sole it.

Regards

K.Manjunathan. 

  • 0
    TI__Guru**** 191886 points

    Hi Manjunathan,

      The RM48 I/O logic level is 3.3V LVCMOS. What is the IMX6 UART logic level? If it is the same as the RM48 then you can directly interface between each other. Can IMX6 support UART without flow control because RM48 does not support flow control like the DCE/DTE. I will also suggest that you check the baud rate of each side to make sure that the baud rate are configured the same. 

  • 0 in reply to Charles Tsai
    Expert 2825 points

    Thank You Mr. Charles

    I want to check the logic level and flow control of SOM.

    I tried with directly interfacing the HDK and SOM, but no data is recevied in the SOM receiver when transmitted from HDK. HDK shows that it is transmitting data by Tx LED blink. The baud rate is same on both sides 115200. i will look into logic level and flow control of SOM and post the results after testing.

    Thanks and regards

    K.Manjunathan