Question about qspi-nor-xxx-config file

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Question about qspi-nor-xxx-config file

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ko-hey
Senior Contributor II

Hi all,

 

I need to edit following files because my customer use N25Q032A of micron.

 

qspi-nor-macronix-mx25l51245g-config

qspi-nor-micron-n25q256a-config

qspi-nor-spansion-s25fl128s-config

 

I have a question about parameter of " ddr_mode_enable=1".

 

 

Accessing the NOR flash in DTR / DDR mode when "ddr_mode_enable = 1" is set in the QuadSPI setting file and only ADDR or READ is used without using ADDR_DDR or READ_DDR with lut [n] Is it possible?

 

Ko-hey

 

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igorpadykov
NXP TechSupport
NXP TechSupport

not.

Setting value of ddr_mode_enable requires usage only ddr commands:

ADDR_DDR or READ_DDR.

Best regards
igor

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Ko-hey

>Accessing the NOR flash in DTR / DDR mode when "ddr_mode_enable = 1"
>is set in the QuadSPI setting file and only ADDR or READ is used without using
>ADDR_DDR or READ_DDR with lut [n] Is it possible?

sorry this is not possible.

Best regards
igor
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ko-hey
Senior Contributor II

Hi igorpadykov

Which mode is used to access the NOR flash when "ddr_mode_enable = 1" is set in the QuadSPI setting file and only ADDR or READ is used with lut [n], SDR mode or DDR mode ?

Ko-hey

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Ko-hey

when "ddr_mode_enable = 1" it is necessary to use "ddr" mode commands only:

ADDR_DDR or READ_DDR. ADDR or READ can not be used in "ddr" mode.


Best regards
igor

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ko-hey
Senior Contributor II

Hi igorpadykov

When using the ADDR or READ command, it is executed in SDR mode regardless of the setting value of ddr_mode_enable.

Am I correct ?

Ko-hey

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igorpadykov
NXP TechSupport
NXP TechSupport

not.

Setting value of ddr_mode_enable requires usage only ddr commands:

ADDR_DDR or READ_DDR.

Best regards
igor

View solution in original post

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ko-hey
Senior Contributor II

Hi igorpadykov

Thank you for your support.

I posted another question (https://community.nxp.com/thread/490304) related to this thread.

I hope you will follow it.

Ko-hey

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