change the slew rate to medium MAX V - change the slew rate to medium MAX V Hello, I need to change the slew rate to medium in 5M570ZT100. in assignment editor in Quartus doesn't propose SLEW_RATE. When I tried to use explicitly "alt_outbuf" buffer which has SLEW_RATE parameter I get error Error (12175): The parameter "slew_rate" on the I/O primitive type "alt_outbuf" is not supported for the "MAX V" device family. https://www.intel.com/content/www/us/en/programmable/quartushelp/17.0/mapIdTopics/jka1465579976452.htm tcl command modify_io_slew_rate is not supported for "MAX V" in pin planner I don't have column for slew rate. looks like Altera doesn't want users to have full control on slew rate for "MAX V". but in max5_handbook I can see that it's possible could anybody help me please thank you Replies: Re: change the slew rate to medium MAX V I’m glad that your question has been addressed, I now transition this thread to community support. If you have a new question, Please login to ‘ https://supporttickets.intel.com ’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions. Replies: Re: change the slew rate to medium MAX V thank you! Replies: Re: change the slew rate to medium MAX V Hi, 1. pin planner doesn't display all available pin option by default. Use "customize columns" in context menu to display "Slow Slew Rate" option. 2. The tcl command is set_instance_assignment -name SLOW_SLEW_RATE ON to <pin name> There's no "medium" slew rate setting. You can set "slow slew rate" for individual pins, default setting is off. Review resource section, output pins in fitter report in case of doubt.