5545 - What is the boot time for EXT-NVCM if there is no external SPI?
It takes 32,768 SPI clock cycles before it times out and move to boot from NVCM.
Related Articles
5192 - CrossLink: What is the boot up sequence time for CrossLink when booting up from NVCM/SPI PROM?
If booting up from internal NVCM, the sequence of events after power up is provided below (Note: Timing numbers are prorated from full chip simulation.): 1. After the analog POR is triggered at around 800 mv for Vcc and 1.5 V for Vccio, digital delay ...
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) ...
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 ...
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 ...
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 ...