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L138 Compact Flash peripheral required on EMIFA?

tbriseb
Intellectual 355 points
Other Parts Discussed in Thread: AM3517

 Hi there,

Will the EMIFA on the L138 support a Compact Flash interface.  We need to add Compact Flash to our product that uses the L138 but don't want to use USB or SATA for this.  Can you confirm if there is another way? Such as EMIA?

Thanks

tB

  • 0
    TI__Mastermind 41665 points

    Compact Flash is electrically an ATA/IDE interface which is a somewhat specialized parallel interface though you could theoretically interface to it with the EMIF. I have seen this done in the past however I do not believe we have any application notes or hardware from TI to implement the interface. Two examples of this being done in the past on older devices with a similar AEMIF are the DSK IDE Daughtercard and DM642 DMDK from Ateme, though neither are specific to the L138 nor are they necessarily readily available any more, however they show that such an interface with the generic EMIF is physically possible.

  • 0 in reply to Bernie Thompson TI
    Expert 1125 points

    Hi,

    Is this similar in case of AM3517's GPMC interface,is it possible

    to connect it through an external controller for CompactFlash.

     

    Regards,

  • 0 in reply to Prad
    TI__Mastermind 41665 points

    The GPMC is similar to the EMIFA interface, so I suspect it is possible as well, however I have not seen it done yet on a GPMC using device. Unfortunately I am not all that familiar with the CF implementations that were done on the EMIFA apart from knowing they exist(ed) so it is hard to say for absolute certain.

  • 0 in reply to Bernie Thompson TI
    Expert 1125 points

    Hi,

    I am less familiar with MMC interfaces and as you know AM3517 supports CE-ATA through MMC/SD/SDIO2,

    is there any way to use CompactFlash with this kind of interface.

    Regards.

  • 0 in reply to Prad
    TI__Mastermind 41665 points

    Prad said:
    is there any way to use CompactFlash with this kind of interface.

    You would need some sort of external hardware to adapt the CE-ATA interface to a traditional CF interface, I certainly expect it is possible but I have not come across the hardware to do so.

    One more thought on this, though the SD/MMC interface physically supports CE-ATA commands, I do not believe this is supported by our current PSP driver package (at least I see no mention of CE-ATA support), so this route may also require additional driver software development.