• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 98 subscribers
  • Views 391 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AM335x SPI pinouts

Damodar Sonone
Prodigy 20 points

Hello,

We have an TMDSSK335x Evaluation Module Kit. We want to connect an SPI device to the board but unable to locate the SPI pin outs from the schematics or hardware level document. The EVM has three boards

- Base board

- Daughter board and

- LCD board

There are no connectors provided on base board to connect the SPI device.We have an third-part OS running on board and successfully used the UART for communication, now we need to replace the UART with SPI.

Any help or pointer would be highly appreciated.

Regards,

Damodar 

  • 0
    TI__Guru**** 393215 points
    Hi Damodar,
     
    There are two options for the AM335X GP EVM, but both require rework:
     
    Option 1. You will need to remove R176, R177, R201 and R205 on the Base board and connect wires on the processor side of these resistors.
     
    Option 2. You will need to set CPLD Profile #2 and remove the SPI Flash U8 on the Daugther board, then connect wires to the PCB pads.
  • 0 in reply to Biser Gatchev-XID
    Prodigy 20 points

    Hello Biser,

    Thanks for the quick response, the options you have suggested are not feasible at our end as we do not have the infrastructure to modify the boards. 

    Are the GPIO (I/O) pins on the board available and brought in connectors for use? I mean we can configure the GPIO's for SPI and emulate the SPI on these pins to solve our problem.

    Thanks for your support.

     

     

  • 0 in reply to Damodar Sonone
    TI__Guru**** 393215 points
    The GP EVM is pretty much a "closed" system, you can't do much outside what's provided without reworking the kit. I can suggest that you consider buying a Beaglebone Black - it's cheap (about 45-50 USD I think) and has almost everything brought out on pin headers.