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emif cs signle problem

jie chen9
Prodigy 20 points
Other Parts Discussed in Thread: RM48L952, HALCOGEN

Hello,

I have a problem for the emif  of rm48l952.

Ex-adc mount  on addr: 0x68000000 by emif cs3. When I directly write data to 0x68000000 , it can't hold the data. Debug found, emif had output three cs signal, it is crazy. But I transdata to emif_cs3 0x68000000 by dma, it is right. for more error detail :

emif_cs3 init:

 write data:


oscillograph：the left graph is the complete graphics,the right is zoom up. gree is the cs signal, the emif_D7 output high data signal is yellow .

  • 0
    TI__Mastermind 49120 points
    Hello Jie,

    The images you uploaded are not visible. It would be good if you could upload them again.

    Also, can you configure the external memory range as device-type memory using the MPU inside the Cortex R4 CPU? You can use HALCoGen to generate this configuration code for you.

    Regards,
    Sunil
  • 0 in reply to Sunil Oak
    Prodigy 20 points

    Hello，Suni：

    Thanks for your help!

    According to your suggestion, I have solved this problem.

    Then I read the RM48 technical reference manual.  it is found in emif section:

    Thanks!

    Regards,
    jie