7266 - MachXO2/MachXO3:How to reset device ID when it was accidentally changed during programming?

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• 534 - MachXO: Why can't I scan or program the MachXO device on the MachXO Mini board after I programmed my pattern into the device?

  The MachXO JTAG pins on the MACHXO Mini board share the same traces with some generic IOs of the MachXO device (as shown on page 4 and page 2 of the schematic). If the new design patterns have signals driving out of these pins, they could potentially ...

• 2640 - MACHXO2: How can we recover the device from "Failed to verify the ID" when device ID is messed up?

  The Device ID is always retrievable using the JTAG port. If, as in this case, you get the error: "Failed to verify the ID: Expected: 0x012BB043 Read: E4E4E4E4" (or some other value), try the following to recover the device. When Device ID reports the ...

• 5154 - MachXO3: In doing background programming with transFR enabled, how does the pin re-configured from being an input to bidi and it's behavior as bidi when device is power cycled?

  The I/O electrical properties like drive strength, slew rate, open-drain, pull modes are preserved from the Initial Programming. These settings are not cleared unless the device is power-cycled or loaded with a new bitstream to overwrite these ...

• 1943 - MachXO: With no DONE bit, how can I use JTAG to see if the SRAM download from flash is finished?

  The way to check the MachXO configuration status through JTAG is to use the capture instruction. For the MachXO the capture instruction (which is the instruction shifting out of the instruction register) is 0x19 (if the device is blank) or 0x1D (if ...

• Radiant Programmer: What is Erase, Program, Verify Quad 1 operation used for?

  Description: Erase, Program, Verify Quad 1 enables that QE bit to '1'. In general, there are two (2) requirements/steps to enable booting from external SPI Flash through x4 (QUAD Mode) Step 1 - Convert the bitstream file into hex (Quad I/O read mode) ...