Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

programming cyclone IV with microcontroller

Hi this is franticAF and this is my first post. I'm working on board where an Altera Cyclone IV EP4CE6E22I7N is mounted (with attached flash memory EPCS4). A microcontroller is also present in ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

- Can you control the DCLK, DATA0, and nCONFIG FPGA signals from the MCU?

- If that is a yes, then you can configure the FPGA from the MCU. If no, you may not be able to configure the FPGA directly from the MCU.

- If your config flash is connected to the FPGA only, then you will need to make the MCU change the flash content using some initial FPGA code - this will depend on how the MCU is connected to the FPGA.

Passive Serial is a simple 1-bit configuration scheme that can be used to config the FPGA using an SPI-like protocol. You would usually make Quartus generate a .rbf file to use for streaming the config to the FPGA

Again, if you can provide how the MCU is connected to the FPGA, I can help you better.