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non-multiplexed device in GPMC space

ler
Expert 1070 points

I need to map a non-multiplexed address/memory device into GPMC space.  Was considering a 16-bit latch to hold the

address while the data was presented to the device.  Is this reasonable.  Are there any issues I should know about.  Are there

any design examples I could refer to?  The device requires all 16-bits of address.

  • 0
    TI__Guru 64470 points

    ler said:

    I need to map a non-multiplexed address/memory device into GPMC space.  Was considering a 16-bit latch to hold the

    address while the data was presented to the device.  Is this reasonable.

    Yes, this is reasonable and appropriate.

     

    ler said:

    Are there any issues I should know about.  Are there any design examples I could refer to?  The device requires all 16-bits of address.

    Unfortunately, I don't have an example to illustrate the connection.  I would recommend something like the SN74LVC574A, or similar device, to latch the address during the address phase of the GPMC access.  The clock qualifier would be the gpmc_nadv_ale signal.