• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 98 subscribers
  • Views 242 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Reg - Using Chip select for NAND Boot fro Am3352 processor

Manoj Agarwal
Expert 1030 points

HI

I am using 2Gb(256MB) NAND flash withAM3352 for booting purpose. As per reference manual can have maximum 128MB boundary as per GPMC feature section in TRM for external memory space 512MB so do I need to reserve 2 chipset for accessing 256MB Nand flash and 4 chip selec for 512MB Nand flash.

 

Also for NAND boot feature always CS0 will be used. please confirm.

 

Regards

Manoj A

  • 0
    TI__Guru**** 393215 points

    Hi Manoj,

    Manoj Agarwal said:
    Also for NAND boot feature always CS0 will be used. please confirm.

    Yes, this is correct. Note that GPMC_WAIT0 must also be connected to NAND R/B signal, otherwise you will not be able to boot from NAND.

    Manoj Agarwal said:
    As per reference manual can have maximum 128MB boundary as per GPMC feature section in TRM for external memory space 512MB so do I need to reserve 2 chipset for accessing 256MB Nand flash and 4 chip selec for 512MB Nand flash.

    No, this is not necessary. NAND does not use direct addressing, so a GPMC region of 16MB is enough for even the largest NAND sizes.