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Original question:

66AK2G12: GPMC of 66AK in the TRM and data manual

66AK2G12: 66AK2G12: Synchronous Single Write (non-multiplexed mode) of GPMC in the TRM and data manual

user3788809
Intellectual 900 points
Part Number: 66AK2G12

Hi

While the figure of Synchronous Single "Read" for non-multiplexed mode is discribed,  the figure of Synchronous Single "write" for non-multiplexed mode is not discribed.

We would like to read and write access to non-multiplexed device with "single" read/write mode.

Is this possible? Is there the access mode?

Thanks.

  • 0
    TI__Mastermind 42545 points

    Hi,

    Synchronous Single write is possible but the timing diagram was not included in the data manual.  This is an error in the manual but you can use the read access as an example.  The timing for the data valid from the falling edge is F15 in the table, similar to the burst mode.

    Regards, Bill

  • 0 in reply to Bill Taboada
    Intellectual 900 points

    Hi,

    Thank you for your answer.

    By the way, according to the Table 2-1. Device Memory Map in the TRM,  address area of GPMC_0_DATA is described as 00 3000 0000 - 00 3FFF FFFF.

    When we want to read/write data of the external NOR Flash memory which is connected to GPMC, ARM and DSP should access to this area (00 3000 0000 - 00 3FFF FFFF).

    (The behavior of GPMC address bus pin is accordance with this address information accessed.)

    Is this comprehension correct?

    Thanks.

  • 0 in reply to user3788809
    TI__Mastermind 42545 points

    Hi,

    That is correct but remember that the address range in question is addressing bytes. If you are using a 16bit NOR flash one less address bit would be represented outside the 66AK2G12.

    Regards, Bill