Altera_Forum
Honored Contributor
15 years agoConfiguring Altera FPGAs
I am currently working on a project using a cyclone ii device and I am not sure I understood the Configuration Cycle Waveform as described in ALTERAs config_handbook.pdf correctly : (Figure 1-1)
When the system powers up, the Low-to-High transition of CONF_DONE indicates the end of the configuration phase. Then registers and I/O-pins are initialized before the devices enters the User-Mode, indicated by a Low-to-High transition of INIT_DONE. My question is : In VERILOG-1995 registers can be initialized using an INITIAL block. My code consists of a large number of modules each of them using an INITIAL block. Are all registers affected by that command initialized during that initialization phase as mentioned above (between CONF_DONE transition and INIT_DONE transition) ? I am using QUARTUS 9.1SP2 software. Thanks.