5779 - iCE40 UltraPlus: Can iCE40 devices be configured in Master SPI or Slave SPI mode if the NVCM has already been programmed?

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  To enable SSPI programming, this is the generic checklist user should follow through: Enable SPI port in Diamond/Radiant Software Tools some device may have Slave SPI port enabled, but it is essential for user to cross-check their project to ensure ...

• 5618 - iCE40: Is it possible to boot from an External Flash if the iCE40 device is already programmed in NVCM mode?

  Once the device is programmed in NVCM mode, you will no longer be able to boot from an external Flash. However, you can still configure directly to the SRAM through an external SPI Master such as a Microcontroller. Please refer to FPGA-TN-02001 for ...

• 2313 - LatticeXP2: Is it possible to program the LatticeXP2 SRAM directly using slave SPI mode?

  Solution: No, you cannot program SRAM in SLAVE SPI(SSPI) mode. SSPI can only be utilized to program and verify an encrypted or standard JEDEC file into embedded configuration Flash in background mode. It can be used to read the SRAM fuse cells in ...

• 6259 - iCE40 LP/HX: Is it possible to determine if NVCM has already been programmed on the iCE40 device?

  Solution: To verify whether the NVCM was previously programmed, perform a Blank Check on the NVCM Arrays

• 5731 - Crosslink: Which SPI mode does Crosslink use in Master SPI to configure from SPI Flash? I am referring to CPOL and CPHA conventions of the SPI specification.

  Crosslink uses CPOL=0 and CPHA= 0 in master SPI mode.