TimingAnalyzer User Manual
Contents
1. Set the new state using the pulse panel buttons 1 0 Z or X or you can set a signal value if the signal value button is selected If the Auto Increment equals 1 or more the signal value is automatically incremented every time you add a pulse Just click in the signal during a clock cycle to add the pulse Add pulses quickly by clicking in the signal during the next clock cycle for each new pulse Click in the signal between the clock edges and the pulse appears Keep clicking to add new pulses or extend a pulse value A clock should be above the signals being edited You can select Rising Edge Falling Edge or Rising and Falling Edge synchronous If a clock does not exist the pulse is put in the signal between division markers in the time ruler Time Offset The pulse offset entry in the pulse panel is used to specify an offset in time When adding pulses edges are added at the time of the clock edge plus the offset For example If the clock edges occur at 25ns and 50ns and the offset is 2 ns the pulse will be added with edges at 27ns and 52ns Moving Select the pulse by selecting both edges Use the left or right arrow keys with Ctrl and Shft key combination to move the pulse The distance its move depends on the time per division settinsg as shown below Shft Left Right time per division 100ns Left Right time per division 10 10ns Moving Synchronously Ctrl Left Right time per division2. gt TimeWarp or Ctrl O or pop up menu gt Add TimeWarp Selecting and Deselecting select 1 Click in the TimeWarp deselect 1 Click in the diagram in an empty area This deselects all the objects 2 Use the Esc key This also deselects all objects 3 You can also hold down the Shft key and click in the TimeWarp Editing e Currently you can not edit a TimeWarp Moving e Currently you can not edit a TimeWarp Deleting e Select the TimeWarp Click in TimeWarp e Use delete key Working with VCD Files Its very convenient to take simulation waveform diagrams and convert them to a timing diagram If you create a VCD file while running simulations just open the VCD file as you would a timing diagram file The program will read and parse VCD file and convert it to a timing diagram automatically and save it in the same directory the VCD file is in Reading Use File gt open from the menu or toolbar button and select vcd in the file filter in the dialog Select the VCD file The TimingAnalyzer reads the VCD file and automatically converts it to a timing diagram that is saved in the same directory the VCD file is in Writing This option will be added Saving diagrams as VCD files can be useful for simulation test vectors Bus Signals Some VCD files don t seem to contain buses so there a function Bus Signals that can be used to make buses from sequentially ordered signals like ADIO lt 31 gt ADIO lt 30 gt ADIO lt 2
3. 100 Ins You can also just dray the mouse to move the pulse Moving Synchronously e Select the pulse by dragging the mouse so the pulse is contained in the select rectangle e Hold down the Alt key and use the left or right arrow keys to move the pulse synchronously with respect to a clock The clock must be above the signal that has the pulse being moved Working with Delays About User Delays User delays are entered in the User Delay Panel and represent actual part delays specified by the manufacturer A User Delay needs to specified before adding a delay in the diagram Adding New Delays 1 Select 2 edges The first edge selected should occur in time before the second 2 Add Menu gt Delay or Ctrl 7 or pop up menu gt Add Delay 3 Enter user delay parameters in the User Delay Panel if this is the first time defining this delay If the user delay has already been defined skip this step 4 Enter the delay parameters in the Delay Panel and hit the Add button Adding Previously Used Delays 1 Select 2 edges The first edge selected should occur in time before the second 2 Pop up menu select Add Used Delay Selecting and Deselecting select 1 Drag the mouse so the select rectangle contains the delays 2 Hold down the Shft key and click on the delay names deselect 1 Click in empty area in timing diagram This deselects all objects 2 Hold down the Shft key and click on the delay namesf Moving 1
4. edges Showing Margins This shows the uncertainty in time it could take to change states The area the min and max edge is filled gray 1 Select the edge Moving 2 Click right mouse button to bring up pop up menu Select Add Margins Moving Use the left and right arrows keys at the same time with Ctrl and Shft key to precisely position the edge If multiple edges are selected they will all move together keeping the timing relationships Shft Left Right time per division 100ns Left Right time per division 10 10ns Ctrl Left Right time per division 100 Ins You can also move the edges by dragging the mouse Aligning You can use Align Edge from the Edit Menu to align edges in different signals Align Left aligns all the selected edges to the edge that occurs first in time Align Right aligns all the selected edges to the edge that occurs last in time Align First aligns all the selected edges to the first edge selected e Select one Edge in each signal Do not select multiple Edges in one signal e From popup menu or Edit gt Edge menu select the alignment operation Deleting e Select the edge Use delete key to remove the edge If the edge is not the last edge in the signal the following will be removed as well This is same as deleting a pulse e Select multiple edges and then use the delete key to remove them all at one time Working with Pulses Adding
5. key combination to move the StateBar back one half cycle e Use the Alt and right key combination to move the StateBar right one half cycle Deleting e Select the StateBar Click in StateBar names e Delete key Working with Text Labels Adding e Add Menu gt Text or use Ctrl 6 e The text panel is displayed Enter the text then change the options if desired Then hit the Add button e Click in the timing diagram at the desired position to place the text Selecting and Deselecting select 1 Click in the label name or drag the mouse so the select rectangle contains the label 2 Hold down the Shft key and click in the labels You can also drag the mouse so the select rectangle contains the labels deselect 1 Click in the diagram in an empty area This deselects all objects 2 Use the Esc key This also deselects all objects 3 Hold down the Shft key and click in the label Editing e Double click in the text The text dialog is displayed with the text to edited Moving e Enter any text or option changes then hit the Update button to change the text in the diagram Moving e Select the text click in the text label e Use the left and right arrows at the same time with the Alt key Ctrl key and the Shft key If text labels are selected you can move all of them at the same time Shft Left Right time per division 100ns Left Right time per division 10 10ns Ctrl Left Right time per
6. 9 gt 10 Limitations If you want to bus signals select the signals click the right mouse button to bring up the pop up menu and select Bus Signals The new bus should appear above the most significant signal in the diagram Limitations VCD files are commonly very large files when produced from simulators The TimingAnalyzer does not handle large files very well at this time because it was original designed to work with small text timing diagram files so limited the file size to 100 000 lines This is hardcoded in the VCD parser so the first 100 000 lines of any VCD will be parsed and displayed It is recommended to create smaller sized VCD files from simulations that contain just the transactions of interest that you want to convert to a timing diagram It is possible to run out of memory on the heap if there are lots of edges in the vcd file If this happens a java OutOfMemory error occurs you can increase the memory limit allocated for the program by running the program from the command line as shown below java Xmx512m jar TimingAnalyzer jar Xmx512m specifies the maximum heap memory the program can use in MBytes in this case 512M Bytes User Support Beta 0 947 is the first release with this feature If you find a VCD file that is not loading properly please send me a copy and will do my best to fix asap Limitations 1 VCD dumpvars is supported but not dumpports dumpports includes port driver
7. P PB FrFOOO OOO OO Oo User Manual User Manual Contents Introduction Drawing Timing Diagrams The Basics The most common way to draw timing diagrams is by using the Graphical User Interface GUI There are example timing diagrams in the examples directory and there are also step by step examples in this document You can also draw timing diagrams using Python scripts There are examples of Python scripts in the scripts directory The basic procedure for drawing timing diagrams Add a clock Add Menu gt Clock When the Clock panel is displayed set the options to the desired values and then hit the add button The clock will be displayed immediately in the timing diagram Add other signals Add Menu gt Signal or Bus Set the options to the desired values and hit the Add button The signal or bus will be displayed below the last signal added Add pulses synchronized to the clock above Add Menu gt Pulse When the pulse panel is displayed set the state of the new pulse and then select Rising Edge Falling Edge or Rising and Falling Edge to synchronize the pulse to the clock above Click in the signal during the clock cycle to add the pulse There are options to automatically increment or decrement bus values so you click in a signal quickly multiple times to show a counter The pulses that have been added are not connected to the clock signal So if you change the frequency of the clock signal the pulses
8. Select the delays 2 Use Alt and left key to move the delays back one half clock cycle 3 Use Alt and right key to move the delays forward one half clock cycle Moving the Text Labels Deleting Delays horizontally 1 Select the delay 2 Use left or right key to move the label to the left right or center position vertically 1 Select the delays 2 Use up and down keys to move the label Use the Shft or Alt key with the up and down key to precisely position the text You can select multiple delays and move all the labels at the same time Deleting Delays 1 Select the delays 2 Use the delete key Working with Constraints About User Constraints User constraints are entered in the User Constraint Panel and represent actual part constraint specified by the manufacturer A User Constraint needs to specified before adding a constraint in the diagram Adding New Constraints 1 Select 2 edges The first edge selected should occur in time before the second 2 Add Menu gt Constraint or Ctrl 8 or pop up menu gt Add Constraint 3 Enter user constraint parameters in the User Constraint Panel if this is the first time defining this constraint If the user constraint has already been defined skip this step 4 Enter the constraint parameters in the Constraint Panel and hit the Add button Time Calculations Constraints are used to specified parameters like setup and hold times and pulse width min and ma
9. TimingAnalyzer User Manual version 0 954 Dan Fabrizio February 04 2011 Contents User Manual Introduction Drawing Timing Diagrams The Basics Working with Signals Adding Selecting and Deselecting Changing Parameters Moving Deleting Working with Edges The Edge Defined Selecting and Deselecting Showing Margins Moving Aligning Deleting Working with Pulses Adding Time Offset Moving Moving Synchronously Working with Delays About User Delays Adding New Delays Adding Previously Used Delays Selecting and Deselecting Moving Moving the Text Labels Deleting Delays Working with Constraints About User Constraints Adding New Constraints Time Calculations Adding Previously Used Constraints Selecting and Deselecting Moving Moving the Text Labels Deleting Working with StateBars Adding NDNADOADHUuUUuUUuU UU UU A A BRR PR BP BRWWWwowwnwWwnnnsNNNNPYP PP PP PR Selecting and Deselecting Editing Moving Deleting Working with Text Labels Adding Selecting and Deselecting Editing Moving Moving Synchronously Aligning Deleting Working with Pulse Width Labels Adding Selecting and Deselecting Editing Resizing Moving Synchronously Moving Label Position Deleting Working with TimeWarps Adding Selecting and Deselecting Editing Moving Deleting Working with VCD Files Reading Writing Bus Signals Limitations User Support WO O O OO OO O O O O O MOON NN NN NN OO PrPrPrPrPrPrP RP RP
10. data and is used typically used to drive a tester 2 The first 100 000 lines of a VCD file are parsed and converted to a timing diagram All lines after are ignored 3 If signal definitions take more than 100 000 lines the VCD file will cause an OutOfBounds Exception Close the empty tab window Testing Request for VCD example files 1 All VCD files tested use binary notations for signal values changes Can anyone provide example VCD files that use hex notations for bus signals 2 Scopes are added to the signal names to keep hierarchy information Can anyone provide example VCD files that contain signal names with hierarchy e search 11
11. division 100 Ins e Drag the text label using the mouse to the new desired location Moving Synchronously e Select the text click in the text label e Use the alt and left right key combination to move the text label left or right one half clock cycle Aligning e Select the text labels click in the text labels with Ctrl key down e Edit menu gt Text gt Align Left or Edit menu gt Text gt Align Center or e Edit menu gt Text gt Align Right or e Edit menu gt Text gt Align Bottom Deleting e Select the text label Click in text label e Delete key Working with Pulse Width Labels Adding e Select 2 edges The first edge selected should occur in time before the 2nd edge selected e Add Menu gt Pulse Width Label or Ctrl 5 or pop up menu gt Add Pulse Width Label e Enter the parameters in the panel and hit the Add button Selecting and Deselecting Editing select 1 Drag the mouse so the select rectangle contains the label name or click in the label name 2 Hold down the Shft key and click in the label names or drag the mouse so the select rectangle contains the label names deselect 1 Click in the diagram in an empty area This deselects all the objects 2 Use tha sa hoty dthin dlse Sleftetegts ad olo amp dts the label Editing e Double Click in the label name or select the label and use the pop up menu and choose edit e The dialog is displayed Change the label pa
12. in the signals will not adjust to the new position of the clock edges When the pulses were added the clock cycle time was used in order to calculate the time of the edges in the pulses In order to have the pulse edge times follow any change in frequency of the synchronizing clock you have add Delays between Clock Edges and Edges in the Pulses Delays represent actual hardware delays like combinatorial delays tphl tolh or tcomb as well as synchronous delays like register CLK to Q output delays Working with Signals Adding You can add signals using the Add Menu or the Ctrl key shortcuts Digital Clock Add Menu gt Clock Ctrl 1 Digital Signal Add Menu gt Signal Ctrl 2 Digital Bus Add Menu gt Bus Ctrl 3 The signal panel is displayed on the left of the timing diagram After entering all the paramenters hit the Add Button This new signal will appear in the timing diagram below the last signal You can position the signal in the diagram moving it up to the preferred position Selecting and Deselecting e To select click in the signal name or right click in signal waveform and choose select from the popup menu e To select multiple signals hold down the Shft key and click in the signal names Changing Parameters e To deselect hold down the Shft key and click in the selected name or right click in the signal waveform and choose deselect from the popup menu e You can also just click in the diagram in an e
13. le constraints and move all the labels at the same time Deleting 1 Select the constraints 2 Use the delete key Working with StateBars StateBars are used to add vertical line to any signal edge The line can dashed or solid and given a label StateBars could be added to the rising edges of a clock signal to show the state of processor transaction or maybe the state changes for a state machine They are also very handy for aligning and moving edges Adding e Select an edge e Add Menu gt StateBar or Ctrl 4 or pop up menu gt Add StateBar e Enter the parameters in the panel and then hit the Add button Selecting and Deselecting select 1 Click in the StateBar name or on the line or drag the mouse so the select rectangle contains the StateBar Editing 2 Hold down the Shft key and click on the StateBar names or the line to select multiple StateBars You can also drag the mouse so the select rectangle contains the StateBars deselect 1 Click in the diagram in an empty area This deselects all the objects 2 Use the Esc key This also deselects all objects 3 You can also hold down the Shft key and click in the StateBar name or line Editing e Double click on StateBar label or select the StateBar then the edit from pop up menu e Change the required parameters in the dialog and then hit the Update button Moving e Select the StateBar Click in the StateBar name e Use the Alt and left
14. mpty area to deselect all the selected items or use the Esc key Changing Parameters e Double click in the signal name or select the signal then right click and choose edit from the popup menu e The signal panel is displayed on the left of the diagram Change the required parameters then click the Update button e Changes occur immediately after clicking update Moving e Select the signals to be moved e Use the up and down arrow keys Deleting e Select the signals to be deleted e Use the delete key Working with Edges The Edge Defined An edge occurs when there is the transition from one state to another state In the program three points in time are saved for each edge Point 1 is the very beginning of the edge transition or the 0 point Point 2 is commonly set to the mid point of the edge transition or the 50 point but this point can be changed when specifying Delays and Constraints Sometimes its necessary to make calculations from the 10 or 90 positions in the edge transition This value can be set by the user to any value between 5 and 95 Point 3 is the very end of the edge transition Selecting and Deselecting select 1 Click in an edge to select 2 Hold down the Shft key and click in other edges to select multiple edges deselect 1 Click in an empty area of the timing diagram to deselect all objects 2 Hit the esc key to deselect all objects 3 Hold down the Shft key and click in the selected
15. rameters in the dialog and hit the Update button You wiil see the changes to the label immediately Resizing e Select the label Click in the label name e Select one of the edges that connects to the label e Use the left or right key move the label right one half cycle Moving Synchronously e Select the label Click in the label name e Use the Alt and left key combination to move the label back one half cycle e Use the Alt and right key combination to move the label right one half cycle Moving Label Position horizontally 1 Select the label Click in the label name 2 Use the left or right key to move the text label to the left center or right position If the label text does not fit between the vertical lines the label can be set to only the left or right positions vertically 1 Select the label Click in the label name 2 Use the up or down key to move the text label up and down Use the Shft or Alt key with the up and down keys to precisely position the label text You can select multiple pulse width labels and move them at the same time Deleting e Select the label Click in label names e Use delete key Working with TimeWarps Adding Time Warps allow you to compress the diagram or skip periods of time This is useful when you want to show transactions that are far apart in time Adding e Select an edge at the start time and another edge at the end time of the new TimeWarp e Add Menu
16. x times When specifying a constraint the constraint type allows you specify how the time is calculated between two edges e Max Min measured from source edge max time to the destination edge min time e Max Max measured from source edge max time to the destination edge max time e Min Max measured from source edge min time to the destination edge max time e Min Min measured from source edge min time to the destination edge min time Adding Previously Used Constraints 1 Select 2 edges The first edge selected should occur in time before the second 2 Pop up menu select Add Used Constraint Selecting and Deselecting select Moving 1 Drag the mouse so the select rectangle contains the constraints 2 Hold down the Shft key and click on the constraint names deselect 1 Click in empty area in timing diagram This deselects all objects 2 Hold down the Shft key and click on the constraint names Moving 1 Select the constraints 2 Use Alt and left key to move the constraints back one half clock cycle 3 Use Alt and right key to move the constraints forward one half clock cycle Moving the Text Labels horizontally 1 Select the constraints 2 Use left or right key to move the label to the left right or center position vertically 1 Select the constraints 2 Use up and down keys to move the label Use the Shft or Alt key with the up and down key to precisely position the text You can select multip
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