CADENCE VIRTUOSO TUTORIAL PDF DOWNLOAD
Cadence Virtuoso Tutorial . Run Spectre simulation (Transient analysis). .. If you're using Windows, download X-Win32 (for remote login) and Filezilla ( for file transfer) To remote login using X-Win32, select Manual and choose ssh: . Cadence Tutorial for Cadence version Inkwon Hwang Run Spectre simulation. . Model Libraries. You can download a library file at the DEN blackboard. Layout Edition and Verification with Cadence Virtuoso and Diva. . This manual is intended to introduce microelectronic designers to the Cadence Design.
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Oct 15, Also included with Cadence's Virtuoso design This tutorial will step you through the creation of set of schematics for a very simple linear. Aug 24, i am looking for a fine step by step manual(showing which button was pushed It contains instructions on how to download the gpdk (a necessary step - as. This lab1 is a tutorial on Cadence Virtuoso, which is the simulation tool we will Download the appropriate (for your operating system) installation of the X2go.
SLED 1. User feedback and suggestions on this new drag will enable fine tuning the behavior for best results.
On top of that, this release of SLED also provides the means to set directives directly in the schematic in order to create more complete testbenches. The directives can be parameterized from the property editor and selectively enabled or ignored during netlisting depending on the design context. Such checkers can be used both for virtual test and in-circuit embedded test!
The verification of designs is significantly extended with custom design rules using the integrated Design Rule Checker. Download this Presentation sheet SLED SDG: Assertion-based Verification with PSL As design verification takes so much of designers' time at the various stages of new product development, the top productivity enhancement solution is that which best helps improve the RoI for quality checks. Free your embedded application design from its natural hardware constraints with Hi, In cadence spectre I have created a simple passive, voltage mode mixer with a 50 Ohm port as input and output floating.
So this is some other problem. The ADS tuning capability enables you to change one or more design parameter values and see its effect on the output without re-simulating the entire design again from the beginning.
Get answers to questions in Virtuoso from experts. If Required set your environment variables with the source or setenv command A basic setup uses environment variables in the user's shell to tell the tools where to look for a license. Then run a parametric analysis with clkPer as the varied parameter. It gives designers access to a new parasitic estimation and comparison flow and optimization algorithms that help to center designs better for yield improvement and advanced matching and sensitivity analyses.
When the tutorial writes a letter of a command in parentheses it means that letter is the short cut. There are two key flows: implementation and analysis. Click Add.
Hey, I'm currently a newbie in cadence virtuoso, I'm working on a small circuit called: High speed comparator in technlogy 0. Plot the output of your DLL and you can see if it has locked or not at each clock frequency. No firmware project is too small or too large for Virtuoso hardware virtualization. These scripts set the proper environment variables for you and launch the application. So simplify, I use a vcvs to decouple port from the mixer input and shunt the port with 50 Ohm for matching.
Download: Cadence virtuoso xl manual If you do, you need to manually pull in all the cadence environment variables before you Virtuoso Digital Implementation, Virtuoso Digital Implementation XL. The best way is probably to make the clock period of your vpulse source a variable let's call it clkPer , and the width equal to 0.
Cadence virtuoso variables
For example, specify the width of a transistor to be "wp". Choose a stop time of 6u, which will give plenty of time for any start up behaviour to die out so that we can measure our result on the fifth cycle.
This works if the calculator. It also provides concept of design variable in cadence virtuoso. With the Virtuoso expansion level you get a low-cost access to this common standard. Generally, using the Linux servers requires these steps. Posts about Cadence Virtuoso written by kanchan. How does default describe mode work? To create through GUI, open the design of your choice in Virtuoso ADE, make the design ready for simulation by setting model libraries, analysis, etc.
For Cadence design variables, such as VAR1. Get familiar with the Cadence Virtuoso environment. We'll start by adding the analysis and output options to the file inv.
Why would you want to do this? Figure 2: Variable sweeps Figure 3: Smith chart www. Cadence Design Systems, Inc. The analogLib, basic and opticalLib libraries which are shipped with Cadence Virtuoso are also needed. If there is a dialog box about higher tiered license, click Yes.
The ADS tuning capability enables you to change one or more design parameter values and see its effect on the output without simulating the entire design again from the beginning. The Cadence Virtuoso System Design Platform is a holistic, system-based solution that provides the functionality to drive simulation and LVS-clean layout of ICs and packages from a single schematic.
This is not always the case and you may have to search for it. NET calls? Inverter Symbol Create.
Capitalization is significant. For example i is the shortcut for i nstantiate.
Current vs voltage waveform was plotted and plot options were customized. Always start cadence in your working directory!
Circuit Design - Simulation
SKILL is not an acronym; it is a name. Virtuoso is used to run a task e. I optimize a voltage divider circuit to output a specified voltage. Now we can finally simulate! You can also type the cell name into the Add Instance window if you know the exact name.
If desired, click on the Rotate, Sideways, or Upside-down buttons in the Add Instance window to manipulate orientation of the component you are adding. Press ESC to end adding instances. When adding wires, click once to start a wire or place a node without ending the wire.
To end a wire, double-click or single-clicking on a component terminal e. Once a wire is ended, clicking on the schematic background screen again will start a new wire. Press ESC to end wiring. You schematic should now look similar to the schematic below. AND schematic after adding instances and wires. Click right on the wire and the pin will be attached to the wire without need to edit the wire or add a new wire. Be sure to select output in the Direction field for the output pin.
Add Pin window and completed AND schematic. Check and Save the cell view: After completing any schematic, it should be checked for errors and saved. To check for errors and save the schematic cell view, click on the Check and Save icon blue floppy disk with green check mark. You will be notified if warning or errors were detected.
If so, return to your schematic and look for errors. A symbol is a simplified representation of a circuit schematic showing only the inputs and outputs. Two symbol generation configuration windows will pop up sequentially.
Leave all the settings to default values and select OK in each window to launch the Symbol Editor tool. In the Virtuoso Symbol Editing window, notice the default symbol shape is a simple rectangle. Then, use the drawing tools in the top right menu to draw a symbol closer to an AND gate. Try the Circle and Polygon tools.
CADENCE Analog & Mixed Signal Labs.pdf
Next, use the cursor to move the output Y pin to a proper location for you symbol shape. You can move the part and instance identification parameters anywhere that is convenient.
Symbol generation windows Default left and edited right AND gate symbol 5. When you are happy with your symbol, click the Check and Save icon to, you guessed it, check and save your symbol.
Errors or warning will be noted in the VCL window. You have now completed the schematic and symbol design portions of this tutorial. Below are some general editing tips useful for working with Virtuoso and then the tutorial proceeds with simulations, the last but lengthy topic.
General Editing Tips Mouse Buttons: In most Cadence tools, the left mouse button is used to select components, wires, etc.
The object will then move with the cursor. Or you can select the objects to be moved by left-click and drag to draw a box around the objects.
For now we will just run a simple transient analysis to confirm the circuit designed above is operating as an AND gate should. Setup Analog Simulation: 1. Click OK when done. Ensure that spectre is selected as the Simulator should be the default. Leave all other settings to default and click OK to exit this setup. In the window that opens, make sure the Analysis is set to tran. Enter 10m in the Stop Time input box and check Enabled at the bottom.
The click OK to save the settings. Setup Stimulus: The schematic defines the components within the cell but does not define the control signals typically voltage sources necessary to test the operation of the circuit, such as the power supply voltage and an input voltage signal. These signals are referred to as the stimulus, and here we will use a spectre stimulus text file to define these signals. You will need to use a text editor in order to create a stimulus text file.
SLED - Engage migration of sled parameters
You can use any editor you are familiar with. You can name the stimulus file any name, and put it wherever you wish. Start the text editor of your choice. This is a PuTTY window with a command prompt.This completes your simulation setup.
Saving the Simulator State We can save the simulator state, which stores information such as model library file, outputs, analysis, variable etc. Two windows Component Browser window and Add Instance will pop open. Check the Cellname Inverter , Viewname layout. This section describes some useful additions to your. The 5th and 6th lines V1 and V2 pulse voltages are broken into two lines due to the document margins, but they must be on a single line in your stimulus file.
Sim Vision for visualization. The simulation takes a few seconds and then waveform window appears. To run the Circuit without Parasites 1.
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