TMS320DM6446: DDR2 memory controller on TMS320DM6446

Hi Nomo,

Nomo said:

Is there any potential to use DDR2 controller on TMS320DM6446 as 512MB memory space?
If yes, please let me know the method (e.g. using GPIO solution) and use case.

No, I do not think this is possible. The 32-bit DDR2 SDRAM Memory Controller can address up to 256MBytes. And I do not think you can use external DDR2 chip attached on the DM644x GPIO peripheral.

You can try to enlarge the RAM size using external async SRAM attached on the EMIFA interface. But this interface is slower than the DDR2 SDRAM controller interface. Refer to the DM644x documentation (DM and TRM) for more info regarding EMIFA SRAM.

Regards,
Pavel