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Explorer
Explorer
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Registered: ‎11-12-2007

QSPI + NAND at once

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hi,

is it possible to use QSPI and NAND flash at once. 

In detail, I want to use QSPI for Booting and NAND-Flash for Linux-file-system storage. Is this possible? 

I ask, because both flashes use separate chip-selects and the TRM is not clear about this

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Teacher
Teacher
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Registered: ‎03-31-2012
No you can't use QSPI & NAND at the same time. Actually TRM [UG585 (v1.6.1) on page 50] says:
Static Memory Controller (SMC) Interface:Only one SMC memory interface can be used in a design. The SMC controller consumes many of the MIO pins and neither of the SMC memory interfaces can be routed to the EMIO. For example, if an 8-bit NAND Flash is implemented, then Quad-SPI, is not available ...
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Explorer
Explorer
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Registered: ‎03-31-2011

Hi,

 

Not sure but  for your purpoae, I think SD card can be a good choice...

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Teacher
Teacher
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Registered: ‎03-31-2012
No you can't use QSPI & NAND at the same time. Actually TRM [UG585 (v1.6.1) on page 50] says:
Static Memory Controller (SMC) Interface:Only one SMC memory interface can be used in a design. The SMC controller consumes many of the MIO pins and neither of the SMC memory interfaces can be routed to the EMIO. For example, if an 8-bit NAND Flash is implemented, then Quad-SPI, is not available ...
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Explorer
Explorer
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Registered: ‎11-12-2007

Thanks for clarification.

Then all the boards which mount a QSPI and a NAND-Flash are wasting memory. :-(

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