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Original question:

AM2634: PINMUX: supported GPMC + ETH pinmux options?

AM2634: Access GPMC interface to HSEC connector

Alex Paul
Expert 5354 points
Part Number: AM2634


Hi experts,

I am using the TMDSCNCD263 and want to bring the GPMC to the HSEC connector.

Looking at the schematics:

 

There would be the need to mount the resistors shown above.

Can you approve that there is not any other step I have to do ? 

Regards,

Alex

  • 0
    TI__Genius 11296 points

    Alex,

    You are correct. For HW configuration, depopulate RA2, RA4 and populate RA1, RA3.

    In addition, you will need to pull the ICSSM MUX SEL lines high to route the signals to HSEC.  This affects MUXes U21, U17, and U8.

    ICSSM1_MUX_SEL and ICSSM2_MUX_SEL must be pulled high.  This is done with the IO Expander (U50) - P02 and P03.

    You will also need to pull the RGMII MUX SEL line high to route to HSEC.  This affects MUX U58.  The SEL line comes from IO Expander P10.

    The SDK example at C:\ti\mcu_plus_sdk_am263x_09_01_00_41\examples\drivers\gpmc\gpmc_psram_io does this for you, but I wanted to explain the other configurations that occur to get GPMC signals at the HSEC pins.

    Regards,

    Brennan

  • 0 in reply to Brennan Hartigan
    Prodigy 20 points

    Hi Alex,

    Thanks for the feedback.

    I do not have the SDK example C:\ti\mcu_plus_sdk_am263x_09_01_00_41\examples\drivers\gpmc\gpmc_psram_io that you referred to. It was not in the latest download, is there somewhere else I can get it?

    -Dennis

  • 0 in reply to Dennis Tyczkowski
    TI__Genius 11296 points

    Dennis,

    You can download the latest version of the SDK here, which includes the GPMC example:

    https://www.ti.com/tool/MCU-PLUS-SDK-AM263X#downloads

    Regards,

    Brennan