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TMDSLCDK6748: SPI 0 communication

Part Number: TMDSLCDK6748

I am using a  TMDSLCDK6748  evaluation board. I want to configure the SPI communication in the board using SPI0 communication. But only the SPI0_SIMO, SPI0_SOMI and SPI0_SCLK pins are available in the J15 there is no chip select pin out from any of the output jumpers. They seem to be connected to the LAN IC, U23, LAN8710A-EZK.  SPI1 communication is available and seems to be connected to the camera header. 

Please suggest a way to use the SPI communication in the board.

 

with  regards
Harikrishnan R S

.Thank you .

  • Hi,

    SPI0_ENAn/EPWM0_B/MII_RXDV; SPI0_SCSn_5/UART0_RXD/MII_RXD3 and SPI0_SCSn_4/UART0_TXD/MII_RXD2 are available on the expansion headers.

    You need to correctly pinmux C17, C19 and D18 balls of the TMS320C6748 device:

    Then see page 11 of the schematic:
     

    You need to populate R214 through R219 to physically connect the device ball to expansion header. After that you can use J15.P21, J15.P23, J15.P25, J15.P27, J15.P29, J15.P31 for SPI communication. 


    Best Regards,
    Yordan

     


     Please make sure you read the forum guidelines first.

  • In reply to Yordan Kovachev:

    Thank you

    with  regards
    Harikrishnan R S

    .Thank you .

  • In reply to Harikrishnan R S:

    Is there any Pin headers available for interfacing with camera header J16 ?

    with  regards
    Harikrishnan R S

    .Thank you .

  • In reply to Harikrishnan R S:

    The camera interface is J16. See the schematic. What do you mean by pin headers for interfacing with J16??

    Best Regards,
    Yordan

     


     Please make sure you read the forum guidelines first.

  • In reply to Yordan Kovachev:

    Is TI providing any connectors for the 36 pin J16 header ?

    with  regards
    Harikrishnan R S

    .Thank you .

  • In reply to Yordan Kovachev:

    Do we need to remove the R177, R178, R179 and R184 in order to avoid errors ?

    with  regards
    Harikrishnan R S

    .Thank you .

  • In reply to Harikrishnan R S:

    No, ti does not provide connectors, you should research and select the correct camera module.
    The resistors should NOT cause any problems. NOTE that you should populate R214 through R219 with 0 ohm resistors as stated in the schematics.

    Best Regards,
    Yordan

     


     Please make sure you read the forum guidelines first.

  • In reply to Yordan Kovachev:

    I have populated the resistors, but the output signals are getting distorted in those pins. 

    with  regards
    Harikrishnan R S

    .Thank you .

  • In reply to Harikrishnan R S:

    Can you post the scope measurements? Are you sure you're doing the pinmux correctly?

    Best Regards,
    Yordan

     


     Please make sure you read the forum guidelines first.

  • In reply to Yordan Kovachev:

    SPI CLOCK

    SPI SOMI

     

    with  regards
    Harikrishnan R S

    .Thank you .

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