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RLyon's avatar
RLyon
Icon for New Contributor rankNew Contributor
7 years ago
Solved

MT25Q256 replacement for EPCQ256 write issue

Hi, We recently replaced the EOL EPCQ256 device with the suggested MT25Q256 Micron device. I've enabled support for the device in Quartus 17.1 using the suggested ini mod and our software engineer h...
  • RLyon's avatar
    RLyon
    7 years ago

    I've resolved the issue. We were using an old version of the ASMII Parallel 2 that had somehow gotten ported across into the 18.1 software. By removing the ASMII Parallel 2 IP and replacing it with a new instance of the IP (which reported as ASMI Parallel 2 Top) we were able to talk to the MT25Q properly.

Jens's avatar
Jens
Icon for Occasional Contributor rankOccasional Contributor
7 years ago

Hi RLyon,

I had the same problem with Arria 10 and the Serial Flash Controller IP replacing an EPCQL256 with a MT25QU256. After I replaced the Serial Flash Controller in QSYS with Generic Quad SPI Controller II writing tho the flash works again.

For that you have to use an other API function (alt_qspi_controller2_write) .

Jens

  • RLyon's avatar
    RLyon
    Icon for New Contributor rankNew Contributor
    7 years ago

    Sounds like Altera didn't update the combined ASMII controller IP properly. I'll see if that workaround will work with our solution.

    EDIT: Are you using NIOS? We're communicating with the device through a Linux driver which we'd rather not change if possible.