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Basically, in the default VHDL inertial delay, your second "slower" signal assignment statement cancels the future update of the first. You could schedule multiple updates in one statement to correct this. Code: x<='1' after 10 ns, '0' after 20 ns; May 23, 2008. #3.
One of the most important steps is to produce sin and cos (quadrature singal) singal. The signal must be low-noise and the frequency of the two singals can be controlled by computer, i.e. computer (gives a votalge V)--> circuit --> analog sin (A*V*t) and cos (A*V*t) the votalge given by the computer is between -10 and 10 V.
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Member level 2. In static timing analysis, slack indicates whether timing is met along a timing path. A positive slack means that the signal can get from the startpoint to the endpoint of the timing path fast enough for the circuit to operate correctly. A negative slack means that the data signal is unable to traverse the combinational logic ...
Establishing and modifying the rules that govern how Allegro PCB Editor operates on design elements, specifically: Design Rule Checking (DRC) es ConstraintsDefining the layout cross-sectionYou should set up. design rules as part of your preparation for layout. The following figure illustrates where you would.
static declaration of 'insert_function_here' follows non-static declaration (init () in my case) I've found some topics on stackexange here, but those solutions don't completely apply to my problem. The suggestions I've seen until now is that it has something to do with the curly brackets, however I don't see how that applies to the code above.
The SDF file extension is a data file with a fixed length of ASCII, when it works as a system data format file. But when it functions as the standard delay format, the SDF file extension becomes an OVI standard and it is used to represent and interpret the different timing of data, which will be used for the process of electronic designing.
Activity points. 301,064. ** Fatal: (vsim-3421) Value 177 for row is out of range 0 to 176. Almost self-explanatory when looking at the code, I think. You'll either increase the range or don't allow a value > 176. Code: variable row:integer range 0 to 176:=0; variable clm:integer range 0 to 286:=0; esielec.
It means that your SDF file contains negative delay values. If you have for example a negative hold value -x, your signal can change x time before the clock event and still not violate the hold requirement. Your simulator is not accepting these negative values and is setting them to 0. By doing so, the simulator is making the constraints tougher.
1) Generating a layout netlist. - Bring up the project window. - Select the schematic that is being worked with. - Under "Tools" menu, select "Create Netlist" (for mine, I need to go under "PSpice" menu) - Select "layout" on the top tabs. - The defaults should be correct for the file name to create the file dimensions.