LS1023 Setting for Qspi and IFC Bus

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LS1023 Setting for Qspi and IFC Bus

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kk_1123
Contributor I

First, I set the BOOT setting of RCW to Quad SPI(QSPI_A).

After CPU boots, I'd like to use IFC Bus. But the following pins of CPU are multiplexed:  QSPI_A_CS0/IFC_A16  

    QSPI_A_CS1/IFC_A17

If this goes on, I can't use IFC_A16,A17. To enable IFC_A16,A17,how should I do?

(I think there are some internal registers for mode setting, but I couldn't find them.)

Thank you.

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mrudangshelat-13
NXP TechSupport
NXP TechSupport

Hi @kk_1123,

 

If QuadSPI is selected for cfg_rcw_src then the IFC_GRP_F_EXT field must be set to 001 which means IFC signals signal can't be configured.

 

Regards

Mrudang Shelat

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