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If i.MX7 is used with 16bits memory bus width

Question asked by George Fukutomi on Aug 3, 2017
Latest reply on Aug 3, 2017 by George Fukutomi

Dear all,

 

We use one DDR3L.
DCD for them was generated using Aid Script.
In the test using MCIMX7SABRE, it work fine.

 

From now on, we will design original PCB.
Is termination required though following pins are not used?

 

  • DRAM_CS1_B
  • DRAM_SDCKE1
  • DRAM_DATA[16:31]
  • DRAM_SDQS2_P
  • DRAM_SDQS2_N
  • DRAM_SDQS3_P
  • DRAM_SDQS3_N
  • DRAM_DQM2
  • DRAM_DQM3

 

I think that outputs are NC.
Is Pull-up/down required for inputs, such as DQS?

 

Best Regards,

George

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