2
votes
How to estimate timing contraints for FPGAs?
As your FPGA and micro-controller run of different clocks, there is NO timing relation between them. To safely transfer data between them you have to use synchronizers or a circuit which has clock ...
- 14.1k
2
votes
Accepted
Interfacing FPGA to an external chip and timing constraints
Basically what you're trying to do is create a delayed clock to capture your input, and thus allow more setup time for the return signals. While treating the return signals as 'source sync' with a ...
- 41k
2
votes
Accepted
Quartus II - Can I include other files into a *.qsf file?
Tested with Quartus II 15.0
Its possible to add lines like these to the *.qsf file:
...
- 3,807
1
vote
Accepted
Creating multiple Ring oscillators and placing them through Hard macro
Well, the error messages are very clear: You're driving the same output signal with multiple drivers. And that's exactly what your code (and schematic) show: you're driving out2 with several ring ...
- 79.1k
1
vote
How should I translate old TIG statement from UCF to new Vivado XDC files?
set_false_path is not only for for internal paths.
You can use set_false_path for
The port from which all paths are to be set as false paths:
...
- 96
1
vote
Quartus II - Can I include other files into a *.qsf file?
In Quartus Prime ver. 18.1 it is possible to do:
set_global_assignment -name SOURCE_TCL_SCRIPT_FILE pinout.tcl
- 541
1
vote
Quartus II - Can I include other files into a *.qsf file?
Try these commands in the qsf file -
set_global_assignment -name PRE_FLOW_SCRIPT_FILE quartus_sh:script_file.tcl
For an example checkout this page - The example script file is in the zip archive ...
- 147
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