About SDRAM initialization sequence

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About SDRAM initialization sequence

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goto11
Contributor III

Hello,Community


Register list of initialization sequence is described in section 9.2.4.7 of i.MX 7Dual Applications Processor Reference Manual, Rev. 1, 01/2018.
On the other hand, the initialization sequence of LPDDR3 device or JESD209-3C is as shown in the attached file.
Attachments include optional precharge ALL commands and CA training.
When the processing is performed according to the register list of the initialization sequence in section 9.2.4.7, are the options executed?


If options are not executed, can I add them?
If you can add an option, please tell me how.

best regards

Goto

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Yuri
NXP Employee
NXP Employee

Hello,

 

  It may be recommended to use https://community.nxp.com/docs/DOC-152468 

 

Have a great day,

Yuri.

 

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goto11
Contributor III

Hello,Yuri.

Could you tell me about the following questions?
I checked the reply above but couldn't understand.

Question excerpt

Register list of initialization sequence is described in section 9.2.4.7 of i.MX 7Dual Applications Processor Reference Manual, Rev. 1, 01/2018.
On the other hand, the initialization sequence of LPDDR3 device or JESD209-3C is as shown in the attached file.
Attachments include optional precharge ALL commands and CA training.
When the processing is performed according to the register list of the initialization sequence in section 9.2.4.7, are the options executed?


If options are not executed, can I add them?
If you can add an option, please tell me how.

best regards

Goto

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752 Views
Yuri
NXP Employee
NXP Employee

Hello,

  The recommendation is to use the sequence in the Aid tool

(and the DDR Stress) - that is - the options are not needed.   

Regards,

Yuri.

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