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DM3730 nor flash interface

Anindya Chitta Bagchi
Intellectual 285 points
Other Parts Discussed in Thread: DM3730

Hi,

I'm using NOR flash JS28F256P33 from Micron having 24 address lines and 16 data lines with DM3730CUS processor. The flash has a ADV# pin to control address latching on its address lines. Hence I have connected the pins gpmc_d0-gpmc_d15  to the data lines as well as the lower 16 address lines on the flash (i.e. gpmc_d0 pin is connected to both A1 and D0 pins on the flash). I have also mapped the Processor pin gpmc_nadv_ale pin to the pin ADV# on the flash for address latch function. Is this scheme recommended?

If it is not, please suggest NOR Flash parts that can be used with DM3730CUS for gpmc operation.

Regards,

Anindya Chitta Bagchi

  • 0
    TI__Guru 65405 points

    Hi Anindya,

    I'm not familiar with the JS28F256P33 NOR flash from Micron but reading the datasheet it seems suitable to work with the DM3730 processor. The NOR flash should be connected via GPMC to DM3730 and the GPMC can communicate with a wide range of external devices

    • External asynchronous or synchronous 8-bit wide memory or device (non-burst device)
    • External asynchronous or synchronous 16-bit wide memory or device
    • External 16-bit nonmultiplexed device with limited address range (2 Kbytes)
    • External 16-bit address/data-multiplexed NOR flash device
    • External 8-bit and 16-bit NAND flash device
    • External 16-bit pseudo-static random access memory (pSRAM) devic

    You can obtain more details about connection between DM3730 and external NOR flash memory in the Technical Reference Manual Figure 10-37 at the link:

    http://www.ti.com/lit/ug/sprugn4r/sprugn4r.pdf

    BR

    Tsvetolin Shulev