LS1043AQDS: QSPI flash not recognized

[carlos-m-ribeiro]

When we tested the LS1043AQDS with MX25L25635FZ2I-10G QSPI flash in our board, in the beginning, we have not seen any interaction between CPU and the QSPI flash (second picture) as we have seen before in other boards that we have QSPI flash like LS1046AQDS (first picture) where blue line - clock, green line - chip select and pink line - mosi/QSPI input, you have any idea what can be wrong?

Tank you

ls1043_qspi.png

ls1046_qspi.png

[ufedor]

To exclude ambiguity please consider that "LS1043AQDS" is name of evaluation board. Processor on this board is LS1043A.

Are you talking about the evaluation board or custom board with processor LS1043A?

It is required to doublecheck the processor connection schematics referring the Design Checklist and evaluation board design files.

Also check that TRST_B is pulsed low (asserted) during POR sequence.

[ufedor]

It is required to doublecheck the processor connection schematics referring the Design Checklist and evaluation board design files.

Also check that TRST_B is pulsed low (asserted) during POR sequence.

[carlos-m-ribeiro]

I am talking about the custom board with processor LS1034A.