FlexSPI for Flash & RAM (IMXRT106x)

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FlexSPI for Flash & RAM (IMXRT106x)

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bw1
Contributor IV

Our team is using an IMXRT1062 with flash on FlexSPIA1, and wants to add external RAM.  They would like to memory map the external RAM and use it basically the same as internal RAM.  We are hoping to place QSPI RAM on FlexSPIB1. 

1) Is it possible use it RAM on B1 at execution speeds with all memory mapped RAM addressing while also executing code from flash on FlexSPIA1?  So not just IP bus commands. 

I understand that both can't run at the exact same time. 

2) If I am reading the reference manual correctly, A1 and B1 share the same LUT, so we would need commands for both in that same table? 

 

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jingpan
NXP TechSupport
NXP TechSupport

Hi @bw1 ,

1. Is it possible use it RAM on B1 at execution speeds with all memory mapped RAM addressing while also executing code from flash on FlexSPIA1? 

Yes, it's possible.

2. If I am reading the reference manual correctly, A1 and B1 share the same LUT, so we would need commands for both in that same table? 

Yes, in same LUT table. But A1 and B1 has standalone r/w command pointer to the LUT.

 

Regards,

Jing

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