Lattic ECP/EC -- Partial Run-time Reconfiguration??

note

Nickel,

As far as I know EC/ECP does not support partial reconfiguration. However, there is something that it might be helpful depending on the application. EC/ECP has an embedded SPI Flash Memory interface. Using the normal JTAG pins, you can reprogram the SPI Memory through the FPGA in a background mode (that is while the logic is running from the SRAM cells). So, the new configuration file can hold the part of the logic that you want to change. Hence, after toggling the PRGRM pin for a short time, the SRAM will be configured with the new configuration file. In case that configruation time is critical for your application, I suggest take a look at the new LatticeXP device.

rgds,

cristian