Vitali1
New Contributor
New Contributorchange 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.
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
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.
