change the slew rate to medium MAX V

[Vitali1]

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

[FvM · Accepted solution]

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.

[Vitali1]

thank you!

[AqidAyman_Intel]

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