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TIUSB3410

parag mulay
Prodigy 90 points
Other Parts Discussed in Thread: TUSB3410

I am evaluating TIUSB3410 and there are some issues regarding this.

1. When I connect TIUSB3410 UART EVM with the PC, the PC detects it as a separate serial port and things are fine till this step. Then I start hyper terminal and try to see if the letters are typed are echoed back on hyper terminal when I short 2nd and 3rd no pin of serial port (thats how serial port is checked). But letters are not echoed and there is no communication.

 

2. Then I checked the Rx and Tx pins of TIUSB3410 on the board and I found that when Hyper terminal starts communication the voltage level which is at 3 V goes to 0 V and then when I type the letters to see if there are changes in the voltage levels(which are expected to indicate communication) that does not happen. There is absolutely no change in 0 V that I see on the CRO.

Please suggest me how to proceed from here.

 

 

 

 

 

  • 0
    TI__Prodigy 225 points

    Here's how you can implement loop back test on TUSB3410 UART EVM. When the device enumerates, it comes up as a Virtual COM Port device and if you look in your device manager the EVM will show up with a particular COM port number. Open a hyperterminal with that com port number. Connect the RS232 of the EVM to the serial port on your PC and open a second hyperterminal with COM1. Make sure you have set the serial port properties of both the hyperterminals to match eachother correctly. Now, you should be able to echo characters from one hyperterminal to another.

     

     

  • 0
    TI__Intellectual 2170 points

    I suggest using a loop-back connector configuration like the one shown in the next image:

     

     

    I've been using this config with my TUSB3410 EVM when doing loop-back testing. Also, please let the TUSB3410 be installed and check/use that COM port in the hyperterm properties, so you will be able to use it a echo back characters.

     

  • 0 in reply to Ismael Duron10236
    Prodigy 90 points

    Ismael, Brandon,Sandeep:

    Thanks for your reply and it did work. There was also some driver issue. I am working on the PCB now and its ready. There is other issue which I have posted in different thread. The TUSB3410 is not detected by my USB port.

    Regards,

    Parag

     

     

  • 0 in reply to parag mulay
    TI__Intellectual 2170 points

    Parag,

    No problem. I've already left a comment for your inquiry on the other thread. You need a device driver in order to get it detect under any OS as a Virtual COM port.