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Original question:

TMDSCNCD28388D: Access to EMIF1 Interface

TMDSCNCD28388D: EMIF1 Data Bus on ControlCard

John MacGregor
Prodigy 200 points
Part Number: TMDSCNCD28388D


I want to use the EMIF1 memory interface on the ControlCard HSEC8 edge connector but I don't see where Data Bit D9 is placed on the Edge Connector HSEC8.

It is on IC signal called GPIO075 but that signal does not appear on the HSEC8 connector.

I suspect it is pin 142 for the schematic calls it MCU_GPIO126.

The PDF schematic is dated Rev A, 4/11/2019

  • 0
    TI__Mastermind 42195 points

    John,

    GPIO 75 does not go to the HSEC connector it is used for TXD0 on the Ethernet PHY. EMIF1_D9 does not appear anywhere else in the pinmux, why do you think that GPIO126 would support this function?

    On this controlCARD you should still be able to evaluate EMIF 1 with an 8 bit data width. Unfortunately D9 was not able to be brought out to the HSEC interface. 


    Regards,
    Cody  

  • 0 in reply to Cody Watkins
    Prodigy 200 points

    Cody,

    Thanks for the information - On the Controlcard schematic the most logical pin on the HSEC8 connector was connected to GPIO126 - between GPIO76 and GPIO75 on the HSEC8 (D7 and D10).

    I plan on controlling a PLD with data from the C28x so muxing the 8 bit bus is not a big issue.

    John