• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 98 subscribers
  • Views 243 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.

About AM4372 + external RAM

albgarc2014
Genius 3520 points
Other Parts Discussed in Thread: AM4372, AMIC120

Hi every all !!!

I am designin my hardware bsaed in AM4372, I hace 2 question please,

1-) The AM4372 has witdh in the ram data bus (DQ0-DQ31) of 23 bits.
Can I connect only one memory RAM of 16 bits in the low half of the bus (D0-D15) ?
If yes, what I must to do with hight half of the bus (D16-D31)? I must keep open or pulled?

2-) In the refence design: AM437x StarterKit EVM, there are a flash memory MX66L51235FMI. Can I removed it in my custom desing? I my design I have a eMMC NAND flash.

Thanks very much. Best Regards

  • 0
    TI__Guru*** 125430 points

    albgarc2014 said:
    1-) The AM4372 has witdh in the ram data bus (DQ0-DQ31) of 23 bits.
    Can I connect only one memory RAM of 16 bits in the low half of the bus (D0-D15) ?
    If yes, what I must to do with hight half of the bus (D16-D31)? I must keep open or pulled?

    Everything you asked above is documented in Section 5.12.8.2.1.3.1 "DDR3 Interface Schematic" in the data manual.

    albgarc2014 said:
    2-) In the refence design: AM437x StarterKit EVM, there are a flash memory MX66L51235FMI. Can I removed it in my custom desing? I my design I have a eMMC NAND flash.

    Yes, you can remove it.  I assume you have something else planned for non-volatile memory so you can boot the device.

  • 0 in reply to Brad Griffis
    Genius 3520 points

    Yes, I have planned another non-volatile memory foor boot.
    Thanks very much.
    Your answer was very usefull.

  • 0 in reply to Brad Griffis
    Genius 3520 points

    About: Everything you asked above is documented in Section 5.12.8.2.1.3.1 "DDR3 Interface Schematic" in the data manual.

    Please, could you give me the link of the data manual? Please


    I am using: AM437x and AMIC120 ARM® Cortex™-A9 Processors Technical Reference Manual

    Thanks very much. 

  • 0 in reply to albgarc2014
    TI__Guru*** 125430 points

    albgarc2014 said:
    Please, could you give me the link of the data manual?

    Please go to ti.com and type in the part number (AM4372) in the search.