7044 - MachXO2/XO3: How to have successful dual-boot with SPI flash with MachXO2/MachXO3 devices?

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• 1663 - MachXO2: How can I force to boot from the “golden boot” image in the external SPI Flash when using the dual boot feature?

  The MachXO2 has a dual boot feature that works in an automatic mode. If the image loaded from the internal flash is found to have an issue (CRC error), or if the internal flash is erased, then the part will automatically try to load the golden image ...

• 3817 - LatticeXP2: Is the download/configuration time from Internal/External SPI Flash different while using Dual Boot Mode in LatticeXP2 device?

  While using Dual Boot Mode, the configuration time (time required for the bitstream to get configured inside the device) from Internal Flash is less. Data transfer is faster because the Internal Flash interface with SRAM is parallel, whereas it is a ...

• 2155 - MachXO2/MachXO3: How can you determine if the MachXO2 has booted from the internal flash or SPI flash using dual boot?

  Solution: You can read the Flash and SRAM Status Register using ispVM or Diamond Programmer. Here are the steps to follow: 1)) Device powers up check the DONE SRAM Status Register (1=Device booted successfully, 0=Device did not boot successfully) 2) ...

• 7149 - Nexus Devices: What is the maximum SPI Flash size that Nexus devices can boot?

  Nexus devices can boot up to 4 Gb as long as Control register 1 bit 14 (32-bit SPIm Commands) and bit 17(32-bit SPIm Address) is set to 1. See below:

• 1421 - How do I trigger the Dual Boot function for MACHXO2 device?<br>

  The Dual Boot feature is supported through the Master SPI Mode(MSPI) for MACHXO2 device. During the device configuration at power up or toggling of PROGRAMN pin, any of following situations will trigger a dual boot event. A bitstream Cyclic ...