>>> OK so for the 5I20 I can change the PWM so it will go up to ~66 KHz instead >>> of >>> ~33 KHz. >> Peter, would changing to a max 66 kHz PWM frequency on the 5I20 simply >> require a new fpga configuration to be compiled and downloaded to the >> 5I20, or does it require a hardware change ? > > Just a new configuration. > > The base frequency of the PWM is currently 33 MHz and the PWM resolution is > 10 > bits so the current max PWM rate is 33 MHz/1024. I can double the 33 MHz to > 66 > MHz inside the FPGA to get 66 MHz/1024 PWM rate easily (or use the 50 MHz > clock and double it for 100 MHz/1024 max PWM rate.
that sounds great! it looks like we will have several different fpga configs(m5i20-step/dir m5i20-pwm/dir) for the m5i20 in the future, maybe separate directories in cvs should be setup ? I'd be interested in testing a 66MHz/1024 hostmot-4 configuration, but I don't know how to change the vhdl or compile the fpga code. Basically I just do 'loadrt hal_m5i20 loadFpga=1', so I would need help to get to this point, after that I can do the testing with some HAL coding and a scope. AW ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
