Forum Discussion
Altera_Forum
Honored Contributor
16 years agoI didn't assign any pins manually, First I just added my design files to the project and then I tried to compile them using Compile Design located at tasks pane. So when it comes to I/O assignment analysis tool is producing a critical warning message as I said in my previous post.
When I looked at my QSF, pins are allocated for all my Data pins and there are no pin allocations for Address and other signals(control) but the I/O standards are assigned. That implies tool has allocated the pins for data automatically i.e without my knowledge. I want the similar way for other signals too. For all Address/control signals the TCL assignment commands in QSF is as follows set_instance_assignment -name io_standard "sstl-2 class ii" -to ddr_a[6] -tag "variation:ddr"
whereas for data and strobe it looks as follows set_location_assignment pin_d28 -to ddr_dq[0] -tag "variation:ddr"
set_global_assignment -name assignment_group_member ddr_dqs[1..0] -section_id ddr
set_instance_assignment -name io_standard "sstl-2 class ii" -to ddr_dqs[1] -tag "variation:ddr"
So for all Address control signals I need to do the pin allocation manually using pin planner.