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Visual SmartBrowser User`s Manual (NT Version)

1. 4 47 Figur 20 Causal Trace Tool clacslaeswekzssadae rap EX4VeETGd EA SE Su REZES ATA 54 February 2001 Synopsys Inc 5 Figures Visual SmartBrowser User s Manual NT version 6 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Preface Preface About This Manual This manual contains reference information for SmartModel Library users who are on an NT platform If you are on UNIX refer to the Visual SmartBrowser User s Manual UNIX version since the NT version of the Visual SmartBrowser VSB tool operates somewhat differently from the UNIX version The focus of this manual is on how to use the VSB tool to improve productivity when working with SmartCircuit models of FPGA and CPLD devices The manual does not contain general information about SmartCircuit models or other types of SmartModel Library models that information is presented in the SmartModel Library User s Manual For an application note that describes how to use VSB and the other SmartCircuit debugging tools together to solve verification problems refer to the SmartModel Products Application Notes Manual Related Documents For general information about SmartModel Library documentation or to navigate to a different online document refer to the Guide to SmartModel Documentation For the latest information on supported platforms and simulators refer to SmartModel Library Supported Simulators and Platforms For
2. NT version Now that you are familiar with the different areas in the main window let s open a Hierarchy View which is a common first step when using VSB 1 Click on the Create Hierarchy View button iz VSB displays the design in a new Hierarchy View This is the root instance or design instance It represents the design described by the netlist and in VSB it is treated as a device The instance 1s colored depending on your color map because it is selected Only one circuit object can be selected at a time so it s called the global selection Hierarchy Pane 2 To deselect the instance click on any Tool Bar ne unoccupied space in the upper pane of the Hierarchy View Try it now The E Hierarchy View TOP instance isn t colored any more because it s not selected 3 Click on the instance now to reselect it instruction_register TOP You can see each port s direction I O or 13 I O as defined in the netlist its name and for the design instance the corresponding symbol pin name in parentheses For example CLOCK_IR is an input output port that corresponds to I O CLOCK IR DPO55 IZO INST BITO DP042 pin DP055 on the device symbol I O INST BIT1 DP046 4 Click on the CLOCK IR port now I O INST BIT2 DP054 TON PE ET DPOR It turns color because it s selected But it s Deu part of the instruction register instance 1 0 SHIFT IR DP044 so the instance is still se
3. click on the Illegal Chars button 2 Clear the Illegal Chars and Substitute Chars fields 3 Click on the OK button Until you specify an illegal character VSB does not create automatic aliases or validate bus names Existing aliases however they were created are not affected Defining Illegal Characters To define illegal characters follow these steps 1 In the Windows amp Monitors tool click on the Illegal Chars button 2 In the Illegal Chars field type any characters not accepted by the target simulator February 2001 Synopsys Inc 49 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version 3 In the Substitute Chars field type the characters that will replace them Substitutions are position dependent To illustrate position dependency say you type abcde in the Illegal Chars field and ABCDE in the Substitute Chars field VSB creates an alias of A nEt for a net and renames a bus as A Bus gt Note If you specify fewer characters in the Substitute Chars field than in the Illegal Chars field VSB replaces unmatched characters in the Substitute Chars field with the last character specified in the Illegal Chars field 4 Click on the OK button VSB uses the information in this dialog box to validate all existing net and bus names and net aliases o If a net name contains illegal characters VSB creates an alias for it using substitute characters o If a bus name contains illegal chara
4. type of each instance 34 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview e Expand Selection Shows the connections from the selected port Same as the Expand command on the Connection View Pop Up Menu e Collapse Selection Hides the connections from the selected port Note that the disconnected objects remain visible Same as the Collapse command on the Connection View Pop Up Menu e Find Centers the selected object in the active Connection View if the view contains the object Use this command after you select an object in another view or tool Same as the Find Current Selection command on the Connection View Pop Up Menu e Create Sparse Hierarchy Displays in a new Hierarchy View just the portion of the design hierarchy that contains objects visible in the active Connection View e Hide Selected Object Hides the selected circuit object in the active Connection View e Hide Unconnected Objects Hides circuit objects in the active Connection View that are not connected to any other object in the view e Close Closes the active Connection View Same as the Close this View command on the Connection View Pop Up Menu February 2001 Synopsys Inc 35 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Examine View In the Examine View window you can view and modify detailed information about model instances as shown in Figure 14 7 Exa
5. 1300 3600 and 5200 ps respectively as specified in the netlist The current values show that the instance has not been modified since the ccn file was opened You can display these values in different units ps ns us or ms and you can change the values 15 Change the minimum value from 1300 ps to 1 35 ns Note that your changes affect only this VSB session unless you save the modified netlist ccn file Even then the changes do not affect the original design just the netlist As soon as you begin typing in the Min entry box the Accept Modification button becomes available This button changes the value for this instance 62 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser For this exercise we ll leave the values unchanged So do not click on the Accept Modification button Notice in the graphical pane above the Timing Form that the instance shows the association between ports D and CLK by linking them together 16 Click on some of the other parameters in the Timing list When you select a parameter in the Timing list VSB shows you the associated ports as specified in the compiled netlist Note that some manufacturers define port delays in which timing information is associated with only one pin This instance also includes state information 17 Click on the State Form down arrow button Any state parameters for the instance are listed on
6. FPGA devices 11 G Global selection tool 18 39 Graphical pane 36 H Hierarchy blocks collapsing 24 blocks expanding 24 82 Synopsys Inc Visual SmartBrowser User s Manual NT version collapse tree from pop up menu 26 expand tree from pop up menu 26 traversing 40 Hierarchy view 14 18 20 23 closing from tool bar 28 pop up menu 25 sparse creating 31 33 35 tool bar 27 High zoom in connection view 21 in hierarchy view 20 26 27 34 Hold violations visualizing 50 Illegal characters defining 49 specifying 46 49 substitutions disabling 49 Instances details displaying 25 displaying 16 showing in connection view 31 timing editing 54 timing viewing 54 top level displaying 25 L Levels zoom 20 zoom setting 22 Low zoom in connection view 21 in hierarchy view 20 26 27 34 M Main window 15 elements 15 Medium zoom in connection view 21 in hierarchy view 20 26 27 34 Menu bar in Main window 15 February 2001 Visual SmartBrowser User s Manual NT version Index Menus commands 55 File 55 Options 55 pop up menu connection view 32 pop up menu examine view 38 pop up menu hierarchy view 25 Tools 56 View 56 Windows 56 Model control file creating 17 46 Models SmartCircuit 11 Monitors bus 45 net 45 state 45 Names bus defining 48 Net Tags tool 18 Nets connections hiding individual 31 monitoring 45 monitors 45 removing tags 43 tagging 42 tagging tool 42 windowing 4
7. Object Type area 16 In the Add To area uncheck the Bus box if it isn t already and push the Windows and Monitors check boxes 17 In the Connection View from CLOCK IR select each of the six DFPC instances using the cross hair 18 In the hierarchy list in the Windows amp Monitors tool select States under the tree State information for the six DFPC instances was added to the list as you selected them even though the State Windows list wasn t displayed at the time gt Note If you had selected an instance without state information nothing would have been added to the State Windows list for that instance 19 Now look at the Nets under the tree The list contains every net except power and ground connected to every port on each of the six DFPC instances you selected 4 Windows amp Monitors vsb tutorial ccn View Window Help TF Buses 3 Monitors JP Nets Clear Selection JF 13 N 7 gt 1 13 N JF N 7 gt N 7 Clear List JF 12 N 7 gt _1 12_N JF N 21 gt N 21 Preview File JF NS 14 gt N 14 JF N 3 gt N 3 Save to File AISTT N gt 1 11 N I ANSD NGI Partial MCF JF N 2 gt N 2 JF N 22 gt N 22 JT AA 11 N 3 gt ITIN Illegal Chars Gelectiatoia Nth sU MERE AddBus N7 Bus Element Editor February 2001 Synopsys Inc 77 Chapter 2 Learning Visua
8. Viewing and Editing Instance Timing and Initial State Values To view timing and state information follow these steps 1 Display the instance in Examine View using one of these methods o Ina Hierarchy View double click on the leaf instance o Ina Connection View double click on the instance o Select the instance then click on the Create Examine View button 2 Click on the Timing Form or State Form down arrow to display the related information gt Note The down arrows are enabled only if the selected instance includes the corresponding timing and state information 3 If you change the timing or state information the Accept Modification button is enabled Click the button to record your changes 54 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview Selecting Circuit Objects This section provides information on how to select circuit objects under different circumstances e Ina Hierarchy View click on an instance or port to make it the global selection e Ina Connection View click on a net port or instance to make it the global selection e In the Global Selection tool select a port net or instance and click on the Select Global button e Inthe Net Tags tool select a net and click on the Select Global button e In the Windows amp Monitors tool select a net or instance and click on the Select Global button Menu Commands The following sections li
9. Window Detail ee 18 H Windows Select alate HIA cf Monitors High HJ Nets Clear Selectic a E States 14 pl H Buses Clear List Medium 1 0 5 CLOCK_IR DPO55 Gj N7 Bu J Jr hase Preview File H 1 0 INST BITO DP042 JP ASIANS gt 1 13 N 7 1 Low I O JINE MITA inmoa4e F AIIE s Ia MeF C e to File 1 0 JINE T3 Connection View 1 12 IDE XI 1 0 Actions View Window Help tial MCF Expand I 0 RE fe 1 0 SH As al Chars etal Callanse 1 0 Jc 1 0 1D JY E Examine View 1 12 I O rn High View Window Li Find I O uP HA Name 1 12 Type Medium Scope 1 12 Bi Selection Ir F Documentation For _ For Help pre pre p ay I Expand N 7 D o gt N 2 4 N 21 CLK Collapse Selection Hu For Help CLR Fort Gnd sound PRE For Help press F1 Figure 2 Various VSB Views and Tools February 2001 Synopsys Inc 13 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version tS Note 14 Hierarchy View View the design as a tree like structure of hierarchical blocks Connection View Expand and collapse circuit connections selectively This demand driven approach has several benefits o Eliminates the need to display the entire schematic reducing processing time o Clears the designer s view of unrelated nets and other circuit objects o Shows how the semiconductor vendor SCV cells are actually connected without th
10. nets from the list In the Net Tags tool select a couple of nets from the list under Tag Net blue Make sure the nets in the other three lists are not selected Click on the Clear Selected Net Tags button As you can see in the Connection View the nets are no longer tagged You can also clear an entire list at once In the Net Tags tool click on the Clear List button under the list of nets tagged blue As with the Global Selection tool you can change the global selection from within the Net Tags tool Select the net from the list under Tag Net white Click on the Select Global button As you can see in the active Connection View the white net is selected That s why it s shown in the selection color for now February 2001 Synopsys Inc 73 Chapter 2 Learning Visual SmartBrowser visual SmartBrowser User s Manual NT version TX Connection View CLOCK IHR a Net in new global selection I spani l Solapse As long as the pointer is a hand this is the only way you can change the global selection You stop tagging and get back the standard pointer by clicking again on the active Tag Net button so that no button is pushed in or by closing the Net Tags tool 19 In the Net Tags tool click on the Close button 74 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser Defining Windows and Monitors There s one more tool
11. values for circuit objects that include timing and state information Displaying the Top Level Instance To display the top level design instance follow these steps 1 In the Hierarchy View or Connection View click on the selected circuit object or on any unoccupied space to cancel the current selection 2 Click on the Create Hierarchy View button 5 Hierarchy View Pop Up Menu You can use the Hierarchy View pop up menu to perform various functions as shown in Figure 9 Raise Application Shell window zoom View Controls Expand SG Bp Find Auto Find Selection Context Sensitive Help F1 Figure 9 Hierarchy View Pop Up Menu February 2001 Synopsys Inc 25 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version e Raise Application Shell Window Brings the VSB main window to the top e Zoom Displays several zoom levels o Detail Each instance is labeled with its name and cell type and the number of contained instances and semiconductor vendor SCV cells o High Each instance is labeled with its name and cell type o Medium Each instance is labeled with its name and cell type o Low Instances are not labeled but circuit object tips show the name and cell type of each instance In this view more of the hierarchy is visible so it is easier to see the overall topology and move about the instance tree e View Controls o Toolbar Toggles display of the tool bar in the active Hierarc
12. 5 windows 45 O Objects browsing for 40 circuit viewing 16 selected circuit hiding 33 35 unconnected circuit hiding 33 35 Options menu 55 P Panes February 2001 graphical 36 status 15 19 status toggling 16 status toggling display 20 view control 15 19 Paths scope showing 33 Ports connections hiding expanded 30 drivers showing in Connection view 30 exploring connections from 24 R Receivers showing in Connection view 30 Reports cause 51 53 Scope path showing 33 Selection adding from pop up menu 33 collapsing from tool bar 27 35 expanding from tool bar 27 35 finding from pop up menu 26 33 finding from tool bar 28 35 global tool 39 Setup violations visualizing 50 Show Windows amp Monitors tool 18 Simulations cause reports visualizing 51 53 SmartCircuit models in VSB 11 Sparse hierarchy view creating 17 State form 37 States initial editing 54 monitors 45 windows 45 Status pane 15 19 Synopsys Inc 83 Index toggling 16 toggling display 20 Strings matching 41 Substitutions illegal characters disabling 49 T Tags net 42 removing from nets 43 Timing instance editing 54 instance viewing 54 Timing form 36 Tips circuit object toggling 16 tool toggling 16 Tool bars connection view 34 hierarchy view 27 Tool tips toggling 16 Tools 23 buttons 18 Close View 68 Create Sparse Hierarchy View 68 Global Selection 18 39 Hide Selected Circuit Object in tutor
13. 8 5 ns 1 gt X on cell port FA1A S UO PAD net FAIA S 4012 8 ns 1 gt X on cell port I 4 U1 S net NS8 4002 7 ns 1 gt X on cell port FA1A CI UO Y net N 6 4000 0 ns 1 gt X on model port FA1A CI Report completed Model Id 0 Instance A1010A 100 1 4028 5 ns To find out the underlying cause of the problem open the cited port in Connection View by either of these methods e Using the Show Global Selection button a Click on the Show Global Selection button b In the Circuit Object text field enter the name of the port FA1A 5S cited in the cause report c In the Scope text field enter the path to the cited port d Make sure the Object Type is set to Ports e Click on the Select Global button f Click on the Create Connection View button e From the Hierarchy View a In Hierarchy View select the root instance b From the list of ports below the hierarchy pane double click on the port FA1A_S cited in the cause report Next trace the input signals following these steps 1 In Connection View double click on the port to show the fan in signals 2 On the instance FA1A S UO cited in the next line of the cause report double click on the cited port PAD 3 On the instance I 4 U1 cited in the next line of the report double click on the cited port S February 2001 Synopsys Inc 51 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version If necessary use the s
14. For the root design instance symbol pin names are shown in parentheses beside the port names o Each SCV instance is labeled with its name and cell type Input ports are shown on the left side of the instance and output ports are shown on the right o Each port on an SCV instance is labeled with its name o Circuit object tips show the names of net connections e High o Each port of a hierarchical block is labeled with its name and direction for example I O or I O For the root design instance symbol pin names are shown in parentheses beside the port names o Each SCV instance is labeled with its name and cell type o Ports on SCV instances are not labeled o Circuit object tips show the names of net connections e Medium o Ports are not labeled but circuit object tips show the names of ports on hierarchical blocks o Each SCV instance is labeled with its cell type and circuit object tips show the names of instances o Circuit object tips show the names of net connections e Low o Ports are not labeled but circuit object tips show the names of ports on hierarchical blocks o SCV instances are not labeled but circuit object tips show the name and cell type of each instance o Net connections are not displayed but more of the Connection View is visible February 2001 Synopsys Inc 21 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Setting the Zoom Level To set the zoom level do
15. Nets To remove the tag from one or more nets follow these steps 1 In the Net Tags tool select the nets to untag 2 Click on the Clear Selected Net Tags button To remove the tag from all the nets of a given color click on the Clear List button under the corresponding color choice list February 2001 Synopsys Inc 43 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Windows amp Monitors Tool You can use the Windows amp Monitors dialog box shown in Figure 18 to do the following e Designate nets states and buses for windowing or monitoring e Create and modify buses and aliases e Create model command files MCFs for simulation Windows amp Monitors vsb tutorial ccn fag Windows Sis Ist Eilers QF Monitors m o a Buses dg N7_Bus T eae J A 13 N 7 gt _I 13_N 7 i A 12 N 7 gt 1 12 N 7 IIGVEXSIETTET US Up ovr Windows dv Jv Montos N7_Bus Monitor ha Figure 18 Windows amp Monitors Tool 44 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview The upper pane contains a graphical hierarchy of window and monitor types Net Windows State Windows Bus Windows Net Monitors State Monitors Bus Monitors The graphical pane shows all the items of the selected type When a bus is selected the Add Bus button changes to an Update Bus button as long as a bus is selected For more info
16. SYNOPSYS Visual SmartBrowser User s Manual Visual SmartBrowser User s Manual NT version Copyright O 2001 Synopsys Inc All rights reserved Printed in USA Information in this document is subject to change without notice SmartModel ModelAccess ModelTools SourceModel Library LM 1200 and Synopsys Eaglei are registered trademarks MemPro MemSpec MemScope FlexModel LM family LM 1400 Logic Model ModelSource and SourceModel are trademarks of Synopsys Inc All company and product names are trademarks or registered trademarks of their respective owners Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Contents Contents PrN ikke 64 KOk VERE OORE AA R OHED 6D EOL EERE rA 7 POMS This Namal ous gee 655 coeaRarees ere eee 4G ea os eee I ee 5 95 i r ban Md deg aO dp de der er MER Pl ed 7 NINH OVEN d cobs Ge tto IEEE A ib Ee Rie ees bee bb dA EXE 8 Typographical and Symbol Conventions 45 040s 9sse8ssa0eese0ee08 8 ENDE ICU aiias bb ede Pape cin o Ee decia Ede ee ewer eaten 9 The Synopsys Websil LuecesaneusiUnss QE aid wedUaEP EE CU SA XE 10 Synopsys Common Licensing SCL Document Set 10 Ce ee ke ae eek 4 0 dq RU A aci M ato E E da diee o n 10 Chapter 1 bolas eee ree Ter ere ey rer ee Tree ee ree re er eer re ry eer 11 DG rv 11 Pee 1G eer PKT 13 l D Rl oo ook 6S Gh ikid Etna ARER REE AERE NE RARER ARNS 15 View and Tool Buttons auod sudes Sekonda enna
17. Simulation Run in Causal Trace 53 Viewing and Editing Instance Timing and Initial State Values 54 erties Circuit OCC 2 xusasee Se 84S bos ai X CER oeda Kee rarei 55 Men Conunands Loesk evwd t ak eg d CRY rop do ERO HO VO OR ER ed 55 File NODU dioere iP ide 0d 3E ORTERER pee Ea AEE EE An a ep 55 CJS MOD 4646 6 584640 4556446808 FOS 5S arisa RUS SHEER OS ARRA opi 23 XI NIU Gu xd debe e REA OE RR P RE AH ERR AER ee eee eee 56 Jool c CTI prr 56 Window MT rorem 56 Chapter 2 Learning Visual SmartBrowser eeeeeeeeeeeeeeeee nnn 57 Ir OPEN access ae bebe Pee 4 EP RH AR DP VE UECRREEE N EH EUH E d UH 57 SOME Up ihe DEUM rrrrsririrrtar riket bie ker a a eir e 57 Ume ie V3 ouuaxassutixei XAR o HEPRHUACEE nea EE TEET S eO pi 59 Identifying Hierarchical and SCV Instances 2 00 e eee ee 64 Determining the Scope of an Instance uoa Vader a p eade eie CE ede 66 Crear a Sparse PCat ouassaks tates Au eases ERIRE EIDES REG 68 Using Global Selecion uad queqepieqevpeqesqenih qei dedidit eed 68 Working with Circuit Object Tips oseeepd el RES dore p oos ee ops 70 Visually Identifying Nets with Net Tags iassausssaexacanadk t eR ss 74 Defining Windows and Monitors 226526568464 65549 4649554 o ads 890855 75 Saving Model Control Files MCFs aae Sca eed adeno genes CR een 78 Changing Window VIEWS i4506 cd die d C CRDECOLHE RR CER eee be EDENDE 78 i ee eT ee ee ee ee ee ee eee ee EA 81 Synopsys Inc Februa
18. a net 2 In the Add Alias text box enter the name of the alias for the net or state gt Note Visual SmartBrowser maps an alias to the appropriate name You can also perform in place editing in the alias lists in order to add aliases update alias names and perform parallel operations on buses 1 Click inside a selected net 2 Modify the name of the net to create a new alias pressing the Return key or clicking outside the edit box accepts the name modification while pressing the Escape key aborts the edit Clicking inside selected buses enables you to add a new bus after which you can click on the new bus in order to edit its name Removing Aliases To remove an alias follow these steps 1 In the upper graphical pane select the appropriate alias you want to remove 2 Press the Clear Selection button to remove the alias Creating a Model Command File MCF To create a model command file MCF follow these steps 1 Click on the Save To File button 2 Specify the path and name for the MCF Specifying Illegal Characters To specify illegal characters for window and monitor names follow these steps 1 Click on the Illegal Chars button 2 Clear the Illegal Chars and Substitute Chars fields 3 Click on the OK button 46 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT versica Chapter 1 VSB Overview Creating and Editing Buses Following are procedures for using the Windows amp Monitors to
19. a portion of the design hierarchy containing just the objects in the active Connection View e Hide Unconnected Objects Hides objects in the active Connection View that are not connected to any other object in the view You can use this command to prepare for creating a sparse hierarchy view e Hide Selected Object Hides the selected object in the active Connection View You can use this command to prepare for creating a sparse hierarchy view e Show Scope Paths Displays below each instance the path to the instance from the root of the design February 2001 Synopsys Inc 33 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Connection View Tool Bar Figure 13 illustrates the tool bar buttons available in the Connection View Ea Detail HIA Change Zoom High Buttons Hm Hm E Collapse Selection E KHAM d e Expand di A Es OR ama Find Selection H Su Sparse em Hierarchy T mese Hide Selected Circuit Object ar ha Hidencs Hide Unconnected Circuit Object aM Close View Close Figure 13 Connection View Tool Bar Buttons e Zoom Detail Each instance is labeled with its name and cell type and the number of contained instances and semiconductor vendor SCV cells e Zoom High Each instance is labeled with its name and cell type e Zoom Medium Each instance is labeled with its name and cell type e Zoom Low Instances are not labeled but circuit object tips show the name and cell
20. ary 2001 Synopsys Inc 11 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version e Visual SmartBrowser Graphically enables you to traverse a design for information on the design elements does not have a batch mode PL debug Tools SmartCircuit Monitor Causal SmartBrowser Tracing Interactive Tool Figure 1 PLdebug Tools Visual SmartBrowser Both the SmartBrowser interactive tool and the VSB enable you to find information about the elements in a design The VSB gives a visual conceptualization of the design whereas the SmartBrowser gives no visual clues to the design Whether you should use the SmartBrowser or the Visual SmartBrowser is primarily a question of preference and possibly circumstances such as the size of your design For more information on SmartCircuit models SmartCircuit monitors causal tracing or the non graphical SmartBrowser interactive tool refer to the SmartModel Library User s Manual 12 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview Multiple Views Visual SmartBrowser reads a post layout netlist in the SmartCircuit ccn format and represents the design in various graphical views as illustrated in Figure 2 E Hierarchy View TOP Gf x Actions View Window Help rey Windows amp Monitors vsb tutorial ccn i i View
21. ce is labeled with its name and cell type e Zoom Low Instances are not labeled but circuit object tips show the name and cell type of each instance e Expand Selection Shows the hierarchy under the selected instance Same as the Expand command on the Hierarchy View Pop Up Menu e Collapse Selection Hides the hierarchy under the selected instance Same as the Collapse command on the Hierarchy View Pop Up Menu February 2001 Synopsys Inc 27 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version e Find Centers the selected object in the active Hierarchy View if the view contains the object Use this command after you select an object in another view or tool Same as the Find command on the Hierarchy View Pop Up Menu e Close Closes the active Hierarchy View Same as the Close this View command on the Hierarchy View Pop Up Menu 28 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT versica Chapter 1 VSB Overview Connection View In the Connection View shown in Figure 11 you can trace connections through the design Select a port or a semiconductor vendor SCV instance and click on the Create Connection View button to view associated input and output connections AL E E l Connection View 1 12 Of x Connection pane Tool bar Status bar Figure 11 Connection View February 2001 Synopsys Inc 29 Chapter 1 VSB Overview visual SmartBrowser User s Ma
22. cialized purposes In essence the main window acts as a central control while you work in a VSB session When using the VSB you will be able to use the main window to navigate back and forth between these various windows Before bringing up any of these other windows let s look at the different functions within the main window itself First you should know that the initial main window does not display all tool buttons such as the Connection View when you invoke VSB tool buttons are context sensitive relative to the current selection The main window is capable of displaying the following information e Menu bar displays by default e Buttons to open the various views and tools display by default although some are greyed out by default until an appropriate time e View control pane with icons for all open views displays icons only when a specialized window is open e Status bar displays only if you choose the Options Status Bar menu item Here is how the main window can look when you open different specialized windows and display the Status Bar Connection View Global Selection Tool Windows amp Monitors Tool Button Button Button Menu Bar Examine View Net Tags Tool Button Button Causal Trace Button Unmodified 4 Hierarchy View View Control Pane Button Icons in View Control Pane Status Bar February 2001 Synopsys Inc 59 Chapter 2 Learning Visual SmartBrowser Visual SmartBrowser User s Manual
23. correct If you know only a portion of the circuit object name or want to select from a list of objects you can browse the design Click on the Select Global button to select the specified instance net or port globally The Browse Filter field recognizes regular expressions and presents a list of all instances that match the pattern you specify in the Browse Filter field February 2001 Synopsys Inc 39 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Browsing for an Object To browse for an object follow these steps 1 In the Scope field type the path to the circuit object you want to select 2 In the Browse Filter field type part of the object name or type a regular expression to specify one or more objects 3 Click on the Browse Given Scope button or press Enter while the Browse Filter field has the focus Traversing the Hierarchy To traverse the hierarchy follow these steps 1 Set the Object Type to Instances 2 Set the Browse Filter field as needed 3 Click on the Browse Given Scope button 4 To move down the design hierarchy double click on an instance in the list 5 To move up the design hierarchy double click on the double dots at the top of the list lt gt Note At the root of the design hierarchy the list shows Device device name rather than the double dots Regular Expressions Use the Browse Filter field and the Browse Given Scope button in the Gl
24. croll bar at the bottom of the connection pane to display instances to the left 4 On the instance FA1A_CI U0 double click on port Y 5 Follow net N 6 to input port FATA CI Visualizing an Effect Report from a Simulation Run Here is a sample effect report generated by the LMC Model Trace Dal Trace Triggering effect report from FAIA_A at 4000 0 ns Model Id 0 Instance A1010A 100 1 4000 0 ns Trace 4002 7 ns Effect 1 50 on cell port FA1A A UO Y net NS2 Model Id 0 Trace 4013 1 ns Effect X gt 0 on cell port I 4 U0 CO net NS7 Model Id 0 Trace 4022 3 ns Effect X gt 0 on cell port I 4 U1 S net N 8 Model Id 0 Trace 4030 2 ns Effect X gt 0 on cell port FA1A CO UO PAD net FA1A CO Model Id 0 Trace 4030 2 ns Effect X gt 0 on model port FA1A CO Model Id 0 To find out the underlying cause of the problem open the cited port in Connection View using either of these methods e Using the Show Global Selection button a Click on the Show Global Selection button b In the Circuit Object text field enter the name of the port FA1A A cited in the cause report c In the Scope text field enter the path to the cited port d Make sure the Object Type is set to Ports e Click on the Select Global button f Click on the Create Connection View button e From the Hierarchy View a In Hierarchy View select the root instance b From
25. cters VSB renames it using substitute characters o If an alias contains illegal characters VSB maps the illegal character to the correct character Visualizing a Setup or Hold Violation Here is a sample setup violation error message generated by VSB Error Violated setup constraint TSUD on D before CLK for cell FA1A df1 at time 27510 8 ns Actual setup time was 0 2 ns specified minimum is 7 8 ns Model Id 0 Instance A1010A 100 1 27510 8 ns To find the point of violation noted in the error message follow these steps 1 Click on the Show Global Selection Tool button 2 In the Circuit Object text field enter the name of the object df1 cited in the error message This is the string of characters following the last slash 3 In the Scope text field enter the path to the cited instance FA1A This is the string of characters preceding the last slash 4 Make sure the Object Type is correct Instances in this example 50 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview 5 Click on the Select Global button 6 Click on the Create Connection View button 7 Click on the Create Examine View button to check timing values Visualizing a Cause Report from a Simulation Run Here is a sample cause report generated by the LMC Model Trace Trace Triggering cause report from FAIA S 4028 5 ns 1 gt X on model port FA1A S 402
26. d Circuit Objects 65 in Main window 15 Show Global Selection 68 Show Net Tags 72 Show Windows amp Monitors 75 tool 18 view 18 C Cause reports from a simulation run 51 53 Characters illegal substitutions disabling 49 illegal defining 49 February 2001 illegal specifying 46 49 matching 40 Circuit object tips toggling 16 Circuit objects selected hiding 33 35 unconnected hiding 33 35 viewing 16 Commands menu 55 vsb 15 Connection 34 Connection view 14 18 21 29 closing from tool bar 35 instance showing in 31 pop up menu 32 showing port drivers 30 showing receivers 30 tool bar 34 Connections collapse port from pop up menu 33 expand port from pop up menu 32 expanded port hiding 30 exploring from a port 24 net hiding 31 Control file model creating 17 Controls view from pop up menu 26 38 CPLD devices 11 D Definitions bus deleting 49 Designs opening 15 Detail zoom in connection view 21 in hierarchy view 20 26 27 34 Details Synopsys Inc 81 Index instance displaying 25 Devices CPLD 11 FPGA 11 Displays change from popup menu 32 Divider view in tutorial 61 Drivers port showing in Connection view 30 E Elements bus displaying 47 bus removing 48 bus reordering in a 48 Examine view 14 18 36 pop up menu 38 Expressions regular 40 Fan in undoing 31 Fan out undoing 31 File menu 55 Files model control creating 17 46 Forms State 37 Timing 36
27. detailed information about specific models in the SmartModel Library use the Browser tool SLMC HOME bin sl browser to access the online model datasheets February 2001 Synopsys Inc 7 Preface visual SmartBrowser User s Manual NT version Manual Overview This manual contains the following chapters and appendixes Preface Describes the manual and lists the typographical conventions and symbols used in it tells how to get technical assistance Chapter 1 Contains procedures for using the Visual VSB Overview SmartBrowser VSB Chapter 2 Contains a short tutorial that enables new users to Learning Visual learn how to use the Visual SmartBrowser VSB SmartBrowser Typographical and Symbol Conventions Default UNIX prompt Represented by a percent sign 3 User input text entered by the user Shown in bold type as in the following command line example cd LMC HOME hdl System generated text prompts messages files reports Shown as in the following system message No Mismatches 66 Vectors processed 66 Possible Variables for which you supply a specific value Shown in italic type as in the following command line example setenv LMC HOME prod dir In this example you substitute a specific name for prod dir when you enter the command Command syntax Choice among alternatives is shown with a vertical bar as in the following syntax example effort level low medium high In this example y
28. ding headers and footers and copy to the buffer Then paste the buffer to the body of your e mail message This will provide us with information to identify the source of the problem 10 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview 1 VSB Overview This chapter presents information on how to use the VSB tool to improve productivity when working with SmartCircuit models This information is organized in the following major sections e Multiple Views e Main Window e View and Tool Buttons e Views and Tools Introduction Visual SmartBrowser VSB is a tool with a graphical user interface that you can use to debug designs that incorporate SmartCircuit models of FPGA and CPLD devices VSB uses multiple different views of a device netlist to enable accurate diagnosis of design problems VSB is part of a suite of SmartCircuit PLdebug tools that enable you to determine relationships within your design as illustrated in Figure 1 The PLdebug tools are e SmartCircuit Monitor Enables you to observe any element in your design and receive reports of any changes that occur on that element e Causal Tracing Enables you to trace events in a simulation to see where a problem is occurring or to trace the causes of a problem to their roots e SmartBrowser interactive tool Enables you to traverse a design and obtain information about any element in the design has a batch mode Febru
29. down the design hierarchy to find a specific port net or instance by name 3 In the Object Type area choose Instances 4 Click on the Browse Given Scope button 68 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser The list below the button shows all the instances in the current scope as shown in the Scope field near the top of the Global Selection tool 5 Scroll down the list and double click on I 12 to move down that hierarchical branch The Scope field shows I 12 and the list shows instances in that hierarchical block Snows there are Mo 6 In the list double click on I 12 instances below Scope with indicates a leaf I 12 1 12 instance I 12 is added to the scope but it s an SCV instance so the list doesn t show any instances Instead the list shows double dots representing the parent hierarchical block Circuit Object Scope 7 Double click on the double dots to move back up the hierarchy a level 8 In the list click on I 4 Object Type Ports Select Global C Nets Instances 9 Click on the Select Global button next to the Object Type area 10 Click on the Close button The SCV instance I 12 I 4 is selected in the I 12 Connection View Browse Given Scope Close Help Selection None For Help press F1 AL gt Note Once you ve set the scope in the Global Se
30. ducts Support Center hotline at 1 800 445 1888 or 1 503 748 6920 from 6 30 AM to 5 PM Pacific Time Monday through Friday International customers Call your local sales office February 2001 Synopsys Inc 9 Preface visual SmartBrowser User s Manual NT version The Synopsys Website General information about Synopsys and its products is available at this URL http www synopsys com Synopsys Common Licensing SCL Document Set Synopsys common licensing SCL software is delivered on a CD that is separate from the tools that use this software to authorize their use The SCL documentation set includes the following publications which are located in root docs scl on the SCL CD and also available on the Synopsys FTP server ftp ftp synopsys com e Licensing QuickStart 142K PDF file This booklet provides instructions for obtaining an electronic copy of your license key file and for installing and configuring SCL on UNIX and Windows NT e Licensing Installation and Administration Guide 2 08M PDF file This guide provides information about installation and configuration key concepts examples of license key files migration to SCL maintenance and troubleshooting You can find general SCL information on the Web at http www synopsys com keys Comments To report errors or make suggestions please send e mail to doc synopsys com To report an error that occurs on a specific page select the entire page inclu
31. e Options Status Bar e Ina Hierarchy View or Connection View do one of the following o Choose View Status Bar o Click the right mouse button and then choose View Controls Status Bar Zoom Levels You can use the zoom control buttons from the hierarchy and connections views to see different levels of detail as shown in Figure 7 ES Detail Figure 7 Zoom Control Buttons Hierarchy View In the hierarchy view each port is labeled with its name and direction for example I O or I O For the root design instance symbol pin names are shown in parentheses next to the port names The zoom buttons work as follows e Zoom Detail Each instance is labeled with its name and cell type and the number of contained instances and semiconductor vendor SCV cells e Zoom High Each instance is labeled with its name and cell type e Zoom Medium Each instance is labeled with its name and cell type e Zoom Low Instances are not labeled but circuit object tips show the name and cell type of each instance In this view more of the hierarchy is visible so it is easier to see the overall topology and move about the instance tree 20 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview Connection View In the Connection View the zoom buttons work as follows e Detail o Each port of a hierarchical block is labeled with its name and direction for example I O or I O
32. e VSB and any messages that the VSB reports Tools Menu The following commands are available from within the Tools menu e Show Global Selection Tool Opens the Global Selection tool where you can select nets ports and model instances by name e Show Net Tags Tool Opens the Net Tags tool where you can set tags colors for specific nets e Show Windows amp Monitors Tool Opens the Windows amp Monitors tool where you can set up windows and monitors for nets states and buses e Show Causal Trace Tool Opens the Causal Trace tool in which you can cut and paste a portion of your simulation output VSB will parse the output looking for cause reports in the LMC Model Trace output and open a new Connection View to show the cause and effect path Window Menu The following commands are available from within the Window menu e Iconify All Windows Reduces the main window and all Hierarchy Connection and Examine View windows to icons Also closes all tool windows e Iconify All Views Reduces all Hierarchy Connection and Examine View windows to icons e Raise All Views Restores all Hierarchy Connection and Examine View windows e window_name Brings the named window to the top Each window name specifies the view and the port or instance on which it is based 56 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser 2 Learning Visual SmartBrowser Int
33. e need to move up and down through the hierarchy Examine View View an instance in detail and edit any timing or state information Windows amp Monitors tool Create model command files MCFs for windowing and monitoring internal nets and states during simulation Throughout this manual and the rest of the SmartModel Library documentation the term instance may mean 1 the device itself 2 any of the hierarchy blocks making up the device or 3 the vendor s library cell leaf node The surrounding text determines which usage is intended Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview Main Window The Main window is the command center from which you control the Visual SmartBrowser Figure 3 illustrates the main window which contains the following elements e Menu bar e Buttons to open the various views and tools e View control pane with icons for all open views e Optional status bar Menu bar Buttons for views and tools Unmodified 4 View control pane Status bar Figure 3 VSB Main Window Opening a Design To open a design include its file name on the command line when you start the Visual SmartBrowser as shown in the following example LMC HOME NbinNvsb design ccn February 2001 Synopsys Inc 15 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version There is also a menu command that you can use to open a design belong
34. er briefly over the output net connection from each of the six output ports you just expanded T1 Connection View CLOCK IR Rest pointer on 1A vo m Ju MER each of j these net 3 connections I spani j Three of the nets from those six output ports are named N 7 But the circuit object tips include the scope of the net if it differs from the scope of the active view so you can see that the nets are distinct This is especially useful at zoom levels where scope paths are not visible As mentioned earlier the most recently expanded net connection is shown in cyan When you select a circuit object it s shown in the selection color These visual aids are transient they change each time you expand a port or select a different circuit object February 2001 Synopsys Inc 71 Chapter 2 Learning Visual SmartBrowser visual SmartBrowser User s Manual NT version Visually Identifying Nets with Net Tags In a complex display like the one you ve created in the active Connection View it can be helpful to assign different colors to specific nets l 11 12 72 Bring the main window to the top and click on the Show Net Tags Tool button e Arrange the Net Tags tool and the Connection View from CLOCK IR so you can see them both completely if necessary you can resize the Net Tags tool In the Net Tags tool click on the button labeled Tag Net white The pointer changes to a poi
35. es A followed by one or more lowercase letters asterisk Matches zero or more occurrences of the preceding element For example ab c Matches ac abc abbc abbbc and so on X 123 Matches X optionally followed by any combination of 1s 2s and 3s You can also concatenate regular expressions to create a string For example A a z _Bus 0 9 matches A followed by one or more lowercase letters then Bus then zero or more digits such as Addr_Bus00 and Address Bus February 2001 Synopsys Inc 41 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Net Tags Tool Use this Net Tags dialog box shown in Figure 17 to tag specific nets and set the color of the nets in Connection View Displaying different nets in different colors can make it easier to identify connection paths through a design Net Tags vsb tutorial ccn Tag Net white mi 1 12 N 7 13 N 7 geni tenta ears EIectea fi ECT Figure 17 Net Tags Tool Tagging a Net To tag a net follow these steps 1 In the Net Tags tool select a color 2 In Connection View select a net While the pointer is a hand every net you select is added to the list under the current color choice 3 When you finish tagging nets click on the current color choice again or close the Net Tags tool 42 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview Removing Tags from
36. generation of a new Connection View At the bottom of the Hierarchy View is an optional status bar Expanding a Hierarchical Block To expand a hierarchical block do one of the following e By selection a In the hierarchy pane select a non leaf instance ll Expand b Click on the Expand Selection tool e By double clicking on a non leaf instance in the hierarchy pane Collapsing a Hierarchical Block To collapse a hierarchical block do one of the following e By selection a In the hierarchy pane select an expanded instance b Click on the Collapse Selection tool b e By double clicking on the expanded instance Exploring Connections from a Port To explore connections from a port do one of the following e By selection a From the list below the hierarchy pane select the port in b In the main window click on the Create Connection View button E ES e By double clicking on the port in the list A new Connection View displays the selected port or SCV instance 24 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview Displaying Instance Details To display details on an instance do one of the following e By selection a In the hierarchy pane select the instance b In the main window click on the Create Examine View button 4 e By double clicking on a leaf SCV instance in the hierarchy pane In Examine View you can also modify timing and initial state
37. he Examine View window if it covers the tutorial or another window gt Examine View 1 12 Graphical Pane Timing Form Button State Form Button February 2001 Synopsys Inc 61 Chapter 2 Learning Visual SmartBrowser Visual SmartBrowser User s Manual NT version This instance includes timing information 12 Click on the Timing Form down arrow button near the bottom of the Examine View Name TS D CLKNLO H D CLKNLI H CLR CLKNI TS CLR CLKNL TH PRE CLKN TS PRE CLKNI PWLMIN CLKN PWHMIN CLKN PWLMIN CLAN PWHMIN PREP TR CLR CLKNI TR PRE CLKN TPD_CLRLH D CLKHL CLRLH TPD CLRHL 7 Description E on D before CLK E Timing Timing Value Units ps C ns C us C ms Parameters Values in ccn File 1300 3600 5200 Current Values 300 3600 5200 Min Typ Max For Help press F1 13 In the upper graphical pane of the Examine View click on the text label for each input port D CLK CLR and PRE The timing parameters associated with each port are highlighted in the Timing list as you select the port in the graphical pane 14 Click on the TS_D_CLKNLO timing parameter at the top of the Timing list VSB displays information about the parameter to the right of the list As shown TS D CLKNLO is the setup time on D before CLK In the ccn file the Min Typ and Max values for this instance are
38. hical pane under Windows gt Buses or Monitors gt Buses select the name of the bus 2 Drag the bus name to the location where you want it Removing a Bus Element To remove a bus element follow these steps 1 In the upper graphical pane under Windows gt Buses or Monitors gt Buses select the element to remove 2 Click on the Clear Selection button To remove all the elements of a bus follow these steps 1 In the upper graphical pane under Windows gt Buses or Monitors gt Buses select the bus 2 Click on the Clear List button 48 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview 3 OK the message box that tells you the items will be deleted Renaming a Bus To rename a bus follow these steps 1 In the upper graphical pane under Windows gt Buses or Monitors gt Buses select the bus 2 Enter the new name of the bus in the Update Bus field Deleting a Bus Definition To delete a bus definition follow these steps 1 In the upper graphical pane under Windows gt Buses or Monitors gt Buses select the bus 2 Click on the Clear Selection button Specifying Illegal Characters For window and monitor names VSB normally defines the slash as an illegal character and substitutes it with an underscore Disabling Illegal Character Substitutions To disable illegal character substitution follow these steps 1 In the Windows amp Monitors tool
39. hy View Status Bar Toggles display of status information in the active Hierarchy View O o Iconify Reduces the active Hierarchy View to an icon o Close this View Closes the active Hierarchy View Same as the Close View tool on the Hierarchy View Tool Bar e Expand Shows the hierarchy under the selected instance Same as the Expand Selection tool on the Hierarchy View Tool Bar e Collapse Hides the hierarchy under the selected instance Same as the Collapse Selection tool on the Hierarchy View Tool Bar e Find Centers the selected circuit object in the active Hierarchy View if the view contains the object Use this command after you select an object in another view or tool Same as the Find Selection tool on the Hierarchy View Tool Bar e Auto Find Selection When possible updates the active Hierarchy View automatically to focus on the selected object 26 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview Hierarchy View Tool Bar Figure 10 illustrates the tool bar buttons available in the Hierarchy View Change zoom buttons Expand D Close the view Find Find a Ri Figure 10 Hierarchy View Tool Bar Buttons e Zoom Detail Each instance is labeled with its name and cell type and the number of contained instances and semiconductor vendor SCV cells e Zoom High Each instance is labeled with its name and cell type e Zoom Medium Each instan
40. ial Hide Unconnected Circuit Objects in tutorial 65 Net Tags 18 42 Show Global Selection 68 Show Net Tags 72 Show Windows amp Monitors 18 75 vsb 15 Windows amp Monitors 44 Windows amp Monitors view 14 Tools menu 56 V Values Visual SmartBrowser User s Manual NT version initial state editing 54 initial state viewing 54 instance timing editing 54 instance timing viewing 54 View control pane 15 19 View menu 56 Views 23 bringing to foreground 17 buttons 18 Connection 14 18 21 29 Connection pop up menu 32 Connection tool bar 34 controls from pop up menu 26 38 divider in tutorial 61 Examine 14 18 36 Examine pop up menu 38 Hierarchy 14 18 20 23 Hierarchy pop up menu 25 Hierarchy tool bar 27 iconifying 17 multiple 13 raising 17 sparse hierarchy creating 17 31 33 35 Windows amp Monitors 14 Violations hold visualizing 50 setup visualizing 50 vsb command 15 W Windows bus 45 main 15 net 45 shell from pop up menu 26 32 38 state 45 Windows amp Monitors tool 44 view 14 Windows menu 56 Zoom 84 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Index levels from pop up menu 26 32 Zoom level 20 setting 22 Zooms detail in connection view 21 detail in hierarchy view 20 26 27 34 high in connection view 21 high in hierarchy view 20 26 27 34 low in connection view 21 low in hierarchy view 20 26 27 34 medium in connec
41. ing parameter as stored in the ccn file e Current Values The min typ and max values for the selected timing parameter as modified but not yet saved to the ccn file When the Timing Form is visible you can click on a timing parameter in the parameter list to highlight the associated ports in the graphical pane If you change the information on the Timing Form click on the Accept Modification button to record your changes State Form The State Form contains a list of states on the left Select a state to view the following information Name The selected state Description A description of the selected state parameter Value in ccn File The value of the selected state parameter as stored in the ccn file Current Value The value of the selected state parameter as modified but not yet saved to the ccn file Bit Position The offset of the last bit selected in the Value in ccn File field If the state contains more than one bit a slider appears below the Bit Position field Drag the slider click on the right and left arrow buttons or use the right and left arrow keys to select a different bit To change a bit s value select the bit and type the value you want it to have Legal characters are 0 1 x unknown u uninitialized z high impedance and unspecified If you change the information on the State Form click on the Accept Modification button to record your changes February 2001 Synop
42. ing to the same model or re open the current design to toss any changes you may have made 1 Choose File gt Open or press Ctrl O 2 Double click on the netlist ccn file you want to open gt Note Tools like VSB are model centric This means that the model you are using determines the correct version of the tool to use for that particular model version Since the model name for example a1425 84 has already been embedded into the ccn file by smartccn we recommend that you invoke VSB on the command line by specifying the design ccn as shown in the preceding example Displaying an Instance To display the top level design instance click on the Create Hierarchy View button ie j Viewing a Circuit Object To view a circuit object in Hierarchy Connection or Examine View follow these steps 1 Select the net port or instance in an active view or tool 2 In the main window click on the corresponding view or tool button You can also choose the corresponding command from the View or Tools menu Toggling the Status Bar To toggle the display of the status bar in the main window choose the following menu item Options gt Status Bar Toggling Tool or Circuit Object Tips To toggle the display of tool tips or circuit object tips in the main window choose the following menu item Options gt Show Tool Tips Options gt Show Circuit Object Tips 16 Synopsys Inc February 2001 Visual SmartB
43. l SmartBrowser Visual SmartBrowser User s Manual NT version In this exercise you added items to two lists at once even though neither of the lists was visible at the time This is a powerful shortcut and it is important to understand how to use it While the pointer is a cross hair you add items to each list that corresponds to a pushed in button in the Selection Adder area Saving Model Control Files MCFs When you re ready you can save the window and monitor information to a model control file for use during simulation 1 Click on the Save To File button 2 Set the Selection field to the name and path where you want to save the model control file using the filter and lists as needed 3 For this tutorial just click on the Cancel button there is no real information to save gt Note If you like you can use the Preview File button to view what the file would look like before saving it use the Page Down and Page Up keys on your keyboard to navigate through the preview file Before you continue turn off the Automatically Add New Selections function by clicking on its button in the Windows amp Monitors tool The standard pointer returns In the Windows amp Monitors tool you can also create aliases and define substitutes for characters your simulator does not accept Refer to Specifying Illegal Characters on page 49 for more information Changing Window Views By now you probably have a lot of
44. lected too I O TDI DP040 5 Click now on any unoccupied space in the ena Ed lower port pane to deselect the port TRST DP052 1 0 UPDATE IR DPo45 Notice that the instance is still selected in B the upper hierarchy pane Type instruction t 6 Click now on any unoccupied space in the hierarchy pane to deselect the instance Status bar Port Pane NE i The instance is labeled with its cell type its name and the number of instances hierarchical blocks and semiconductor vendor SCV instances at the next level down 60 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser 7 Double click on the instance now to expand the hierarchy beneath it you may need to adjust the hierarchy pane to see more instances 8 Drag the view divider down so more of the hierarchy is visible View 9 Double click on the instruction cell instance Divider I 12 to expand it 10 Scroll the Hierarchy View in order to see the 4 TEST CT Ti expanded hierarchy TOP Two visual clues distinguish an SCV instance from a hierarchical instance 1 the SCV instance is outlined in black and 2 its label shows that it contains 0 instances The instruction_cell instance named I 12 contains four SCV instances 11 Double click on the DFPC named I 12 When you double click on an SCV instance VSB displays it in a new Examine View you can resize or move t
45. lection tool you can change the Object Type and select a port or net just as easily but we ll stick with instances for this exercise February 2001 Synopsys Inc 69 Chapter 2 Learning Visual SmartBrowser Visual SmartBrowser User s Manual NT version Working with Circuit Object Tips You may have noticed the text boxes that pop up when the pointer rests for a moment over a net these are called circuit object tips kt Visual SmartBrowser ysb_tutorial ccn instruction_register File Options View Tools Window Help E x X X e Selection Create Create Hierarchy View e instruction register Scope Create a Hierarchy view starting at current selection Unmodified 4 Circuit Object Tip Circuit object tips provide information not displayed at the current zoom level about nets and instances in the active view 1 From the view control pane of the main window bring the CLOCK_IR Connection View to the top 2 Expand the CLOCK_IR port 3 Expand the Q port on each of the three DFPC instances in the column you just exposed 4 In the next column expand the top output port Q Y or PAD on all six instances 5 Set the zoom level to High 6 Make the Connection View large enough that you can see all the connection paths 70 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser Now check some of the net connections by resetting the point
46. low as you expand ports across the design T Connection View 1 12 Last Expanded 1 Cu Net T il r Reset the zoom level to Zoom Detail 2 On the I 12 instance expand the D port to show its drivers The Connection View pans to the left to bring the driver instance into view The new MXQG instance is named I 4 the same as another MX2 instance in this Connection View 66 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser 3 Select the I 4 instance you just revealed In the status bar at the bottom of the Connection View the scope of this instance is shown as I 12 4 Select the other I 4 instance to the right of I 12 The status bar shows its scope as I 13 It is part of a different hierarchical block TT Connection View 1 12 Ground Port Scope Status spand In Detail Zoom you can also display the scope of each instance n In the Connection View click the right mouse button e From the pop up menu choose the Show Scope Paths command As you can see some of the ports are green indicating connection to ground Ports connected to power are red These colors appear only after the port or instance has been explored in Connection View Hierarchy View or Examine View Power and ground nets are not shown even though the ports behave like other ports on the instances Unconnected ports such as Y1 a
47. m IE H CLOCK IR to the top 9 Click on the I 12 N 7 I 13 N 7 and N 7 Ce dschon Adde nets they should be the colored nets Selected Object JNeq NS Scope A5127 tagged using the Net Tags tool M Automaticaly Add New Selections The N7_Bus in the hierarchy window of Object Type Add To the Windows amp Monitors tool should now ts Windows M Bus be designated with a plus sign rese Nr gus t 10 Click on the sign to expand the N7 Bus 11 Click on each of the tagged nets Selection Net N 7 Scope 1 12 12 Select and hold one element in the list while you drag it to a different position in the list under the N7 Bus You can use the Select Global button to the right of the list to set the global selection to an element in the list Remember selection is global only one circuit object can be selected at a time Cross hair Pointer The Clear Selection button removes any selected elements from the list and the Clear List button removes all elements from the list 13 Try those buttons to remove and clear selected elements in the N7 Bus list You can also window or monitor the states of instances that include state information 76 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser 14 In the Element Editor area click on the Window button 15 For this exercise make sure the States and Nets check boxes are pushed in the
48. mine View 1 12 View Window Name 1 12 Type DFPC Scope I 12 r Documentation Graphical NS pane N 21 N 14 Gnd ground Timing form Timing Fag State Form Close Help pee button For Help press F1 Unmodified 7 D Q CLK CLR PRE State form button Figure 14 Examine View Window Graphical Pane This area shows port names and the connected nets Right and left pointing triangles indicate signal direction Grey circles indicate port inversion Power and ground labels are also visible If the instance has timing or state information the corresponding down arrow button Timing Form or State Form below the graphical pane is enabled Click on a down arrow button to show the corresponding form When the Timing Form is visible you can click on a port name in the graphical pane to highlight the timing parameters associated with that port Timing Form The Timing Form contains a list of timing parameters on the left Select a parameter to view the following information e Name The selected timing parameter e Description A description of the timing parameter 36 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview e Timing Value Units Specifies whether to display values in picoseconds nanoseconds microseconds or milliseconds select one e Values in ccn File The min typ and max values for the selected tim
49. n TEEKANNE esse 18 Vin es E 3 eda ed d dcr a ed aro ob pe on 19 SIUE ossa ibd t beadawegsxoduxuce uaa quedaueg qadu a qid s ds 19 PU nn 5s 65 8 ek sonas FIR iq xv dpt RA QA RA ERATAEREQE 20 PIU e cae ond KO Noe ER RR cie ACER OR CO e d CO 20 Connection VIEW ucbequ d Ord Eam qe qae E d CIC ed Falc dee A AC aca deg 21 b fool rrr 23 Hia NU VIEN soiin hea d e eC ee E E RC E ee 23 Hierarchy View Pop Up Menl isoseosses saxea sra REOR RR OR RR DIC RR en 25 Hierarchy View Tool Bar 4 osea sies 44 Ra RAD coher gakereedoeeases 2 du cog ou Ar CETTE 29 Connection View Pop Up Menu uus seuskeanerRe ca d REA RR RACE a 32 Connection View Tool BUE 250000 bce eds todd ER EAE ERRAT FEX Ea 34 ERE RE ea AA ka b dedu are a i 36 Examine View Pop Up Menu uuuuu s eka rua S y gp WO RACER EORR ewer RR 38 Global SIC Tool sedes d re x ERE UR d P RE ERE RA EXAARA AR 39 PELIS DENM uaiat dniotd bd Abo e On E9 Baba cacid pad b KR cac eee abd 42 Windows amp Monitors Tool 24665 eux aad SNR Rcs Rob CROCI RR 44 Creating and Editing Buses 5 dooce dudes ca kten ER LAE REE ErAR RES 47 Specilyine TEM Characters 1 3 acd ERROR FRE RERO 4540s OR RS 49 February 2001 Synopsys Inc 3 Contents Visual SmartBrowser User s Manual NT version Visualizing a Setup or Hold Violation ieu esie eet ORC CE RE ERROR 50 Visualizing a Cause Report from a Simulation Run 4 9d Visualizing an Effect Report from a Simulation Run 52 Using Traces from a
50. nd Y2 on the OUTBUF 0 instance named UO behave similarly February 2001 Synopsys Inc 67 Chapter 2 Learning Visual SmartBrowser visual SmartBrowser User s Manual NT version Creating a Sparse Hierarchy Once the Connection View contains all the instances you are interested in you can create a Hierarchy View that contains only those instances This can help you see the hierarchical nature of a portion of the design without the clutter of unrelated instances 1 In the I 12 Connection View click on the Create Sparse Hierarchy tool Ta men Hier If you zoom out you can see that Hierarchy View I 12 MEE the new sparse Hierarchy View Ac ons View Widow HEB shows the same five SCV instances as the Connection View As you select the various SCV i T instances they are selected in the SCV Connection View too Remember OUTEUF nst nces selection is global 2 In the Hierarchy View you just OUTE F 5 created click on the Close tool oro 615 Instruction cell 12 m Instruction cell Close 3 Click on open space in the I 12 Connection View so no circuit object is selected Using Global Selection E Pine So far you ve worked with Hierarchy View Connection View and Examine w View There are also three dialog tools Close E ge in VSB 1 Bring the main window to the top 2 Click on the Show Global Selection Tool icon 2 B In the Global Selection tool you can move up and
51. nection View select the instance and choose Add Current Selection from the Connection View pop up menu Undoing a Wide Fan In or Fan Out To undo a wide fan in or fan out follow these steps 1 Select the net into or out of the expanded port 2 Click on the Hide Selected Object tool or press Delete Hide E Hide ncs 3 Click on the Hide Unconnected Circuit Objects tool Creating a Sparse Hierarchy View To create a sparse Hierarchy View follow these steps 1 Use the Expand Selection Collapse Selection Hide Selected Circuit Object and or Hide Unconnected Circuit Objects tools to display the instances and ports of interest 2 Click on the Create Sparse Hierarchy button LJ Hier A new Hierarchy View displays just the portion of the design hierarchy that contains the ports and instances in the active Connection View February 2001 Synopsys Inc 31 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Connection View Pop Up Menu You can use the Connection View pop up menu shown in Figure 12 to perform several functions Raise Application Shell window Zoom View Controls Expand l p Find Current Selection Add Current Selection Auto Find Selection Create Sparse Hierarchy View Hide Unconnected Objects Hide Selected Wiert Show Scope Paths Context Sensitive Help F1 Figure 12 Connection View Pop Up Menu e Raise Application Shell Window Brings the VSB main window
52. nitors Tool e Causal Trace Opens a Causal Trace window which you can use to cut and paste portions of your simulation output when you need to see cause reports in the LMC Model Trace output 18 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview View Control Pane The view control pane is illustrated in Figure 5 You can click on any icon in the view control pane to bring the corresponding view to the foreground Click on the left and right arrow buttons to scroll through the view control pane View control pane Selection Instance UO Type INBUF O Scope 1 7 For Help press F1 Unmodified 4 Figure 5 View Control Pane Status Bar The status bar displays the name type and scope of the selected net port or instance as illustrated in Figure 6 It also shows the state of the VSB tool the current zoom level and whether the active design has been modified EF Visual SmartBrowser ysb_tutorial ccn instruction_register File Options View Tools Window Help s y EH Trace 2 Ea HE lt poi v moded 4 Status bar Selection Instance TOP Type instructionuregister Scope For Help press F1 Figure 6 Status Bar February 2001 Synopsys Inc 19 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Toggling the Status Bar Display To toggle the status bar display follow these steps e In the main window choos
53. nting hand As long as the pointer is a hand every net you select is tagged with the current color choice but you do not change the global selection In the Connection View for CLOCK IR use circuit object tips to find the I 12 N 7 net That s the output from one of the MX2 instances in the third column from the left Click on the I 12 N 7 net to select it The net turns white In the Net Tags tool click on Tag Net yellow In the Connection View for CLOCK_IR find the I 13 N 7 net and select it It s the net from the other MX2 instance in the same column Tag one more net In the Net Tags tool click on Tag Net green In the Connection View select the N 7 net 10 In the Net Tags tool click on Tag Net green again The standard pointer returns As you can see the net connections are much easier to follow now that they are tagged To learn a bit more about the Net Tags tool continue with these steps Click on the Tag Net blue button In the Connection View select four or five of the other net connections Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser You can see the nets added to the blue list as you select them in the Connection View Net Tags vsb tutorial ccn 13 14 15 16 17 18 E Tag Net white E 1 12 N AS13 N 7 Seam 3 II ea Selected We lags Now clear some
54. nual NT version In the Connection View ports on an instance include the following visual clues e Acircle in the port indicates inverted input or output e Violet ports are connected to power and green ports are connected to ground The Connection View also contains a tool bar for common tasks and an optional status bar Showing Port Drivers or Receivers To show port drivers or receivers do one of the following e By selection a In Connection View select the port b Click on the Expand tool Jr e By double clicking on the port in Connection View You can continue expanding connections until you reach an SCV device pin gt Note An unconnected port displays no net connections when expanded Hiding Expanded Port Connections To hide an expanded port s connections do one of the following e By selection a In Connection View select the port b Click on the Collapse tool j m A e By double clicking on the expanded port Note that the disconnected objects remain visible to hide them click on the Hide Unconnected Objects tool Hide nc s 30 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview Hiding Individual Net Connections To hide an individual net connection select the net and click on the Hide Selected Object tool or press Delete TE Hide Sel Showing an Instance in the Connection View To show an instance in the active Con
55. obal Selection tool to specify a character or string that appears anywhere in the found names you can use standard regular expression syntax in the Browse Filter field Matching a Character To match a character use any of the following syntax in the Browse Filter field and press the Browse Given Scope button to activate it specChar Where specChar is one of the following Matches the character literally the backslash escapes the special character char Matches any other non special character 40 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview chars Matches any of the characters in the brackets chars Matches any character except those in the brackets charl char2 Matches any of the characters in the range charl to char2 Examples a z Matches any lowercase letter 0 9 Matches any digit charl char2 Matches any character outside the range charl to char2 period Matches any single character question mark Matches an optional preceding element Examples ab c Matches abc and ac a a z c Matches ac aac abc azc Matching a String To match a string use any of the following syntax in the Browse Filter field and press the Browse Given Scope button to activate it plus sign Matches one or more occurrences of the preceding element For example ab c Matches abc abbc abbbc and so on A a z Match
56. ol to create and edit buses Displaying Bus Elements To display bus elements in the upper graphical pane at the top of the Windows amp Monitors tool double click on either Windows Buses or Monitors Buses Windows amp Monitors ysb_tutorial ccn El Bg Windows Select alae Figure 19 Creating Buses in Windows amp Monitors Tool February 2001 Synopsys Inc 47 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Defining a Bus Name To define a bus name do one of the following e To specify a bus under either Windows Buses or Monitors Buses do the following a Select either Windows Buses or Monitors Buses b In the Add Bus field type the name of the bus you want to create and press Enter The bus nam is added to the appropriate list e To define a bus name for other net or state options a In either the Windows gt Buses or Monitors gt Buses lists select one of the other Nets or States options b In the Add Bus field type the name of the appropriate bus and press Enter The bus name is added to the Windows gt Buses or Monitors gt Buses list depending on whether the nets are designated for windowing or monitoring gt Note Visual SmartBrowser maps illegal characters in the bus name with the specified substitute characters Reordering Elements in a Bus To reorder the elements in a bus follow these steps 1 In the upper grap
57. one of the following e From the tool bar click on a zoom level icon e With the right mouse button a In the Hierarchy View or the Connection View click the right mouse button and select the Zoom command from the pop up menu b Choose a zoom level from the menu 22 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT versica Chapter 1 VSB Overview Views and Tools This section discusses the various VSB views and tools Hierarchy View The Hierarchy View window displays the hierarchical location of the instances in a design as illustrated in Figure 8 The root instance is the design itself The semiconductor vendor SCV cells are located at the leaf nodes of a fully expanded branch Thus a flat netlist has two levels one for the design and one for all the SCV cells Tool bar Hierarchy pane instruction_register TOP Wy 13 T E uu oa Design instance Port pane CEU 1 0 Status bar I O ec election Instance TOP Type instuction 1 lFeHeb pessFl O A Figure 8 Hierarchy View February 2001 Synopsys Inc 23 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version The Hierarchy View also contains a tool bar for common tasks and a list of ports Izinput O output I O bidirectional for the selected instance For the root design instance symbol pin names are shown in parentheses beside the port names You can use any port as a starting point for the
58. open views and tools all over the screen but that is easy to fix Raise the main window 2 From the Windows pull down menu choose the Iconify All Views command All open views are reduced to icons the main window remains gt Note The Iconify All Windows command reduces the main window too and it closes the Global Selection Net Tags and Windows amp Monitors tools 78 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser This concludes your introduction to Visual SmartBrowser close the VSB main window without saving anything You will discover more features as you use VSB to speed the design and debug process If you are using this tutorial online click on the Close button above to close the tutorial February 2001 Synopsys Inc 79 Chapter 2 Learning Visual SmartBrowser visual SmartBrowser User s Manual NT version 80 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Index Index A Aliases creating 46 editing 46 removing 46 B Blocks hierarchical collapsing 24 hierarchical expanding 24 Buses creating 47 definitions deleting 49 editing 47 elements displaying 47 elements removing 48 elements reordering 48 monitors 45 names defining 48 renaming 49 windows 45 Buttons Close View 68 Create Hierarchy View in tutorial 60 Create Sparse Hierarchy 68 Hide Selected Circuit Object 65 Hide Unconnecte
59. ou must choose one of the three possibilities low medium or high Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Preface Optional parameters are enclosed in square brackets as in the following syntax example pinl pin2 pinN In this example you must enter at least one pin name pin but others are optional pin2 pinN Getting Help If you have a question while using Synopsys products use the following resources 1 Start with the available product documentation installed on your network or located at the root level of your Synopsys CD ROM Every documentation set contains overview information in the intro pdf file Additional Synopsys documentation is available at this URL http www synopsys com products Im doc Datasheets for models are available using the Model Directory http www synopsys com products Im modelDir html 2 Visit the online Support Center at this URL http www synopsys com support Im support html This site gives you access to the following resources o SOLV IT the Synopsys automated problem resolution system o product specific FAQs frequently asked questions o lists of supported simulators and platforms o the ability to open a support help call o the ability to submit a delivery request for some product lines 3 If you still have questions you can call the Support Center North American customers Call the Synopsys Eaglei and Logic Modeling Pro
60. ouble click on the Q port button to expand it VSB shows another DFPC instance I 6 and an MX2 instance I 4 The net connection is shown in cyan because it s the most recently expanded T3 Connection View 1 12 9 Double click on the same port Q on I 12 to collapse it The fan out connection is hidden but the instances remain 10 Click on the net connection between I 6 and I 4 It turns color because it s selected 11 Click on the Hide Selected Object tool 12 Click on the Hide Unconnected Objects tool l That s a fast way to undo a wide fan in or fan out but we need to see those components to go on with the tutorial 13 Double click on the Q port again to expand it 14 Expand the Q port on I 6 15 Expand the PAD port on the OUTBUF_0 instance named UO scroll to the right to see the DP046 port February 2001 Synopsys Inc 65 Chapter 2 Learning Visual SmartBrowser visual SmartBrowser User s Manual NT version You have traced the net connections all the way to I O port INST BITI which corresponds to symbol pin DP046 on the design instance TF Connection View 1 12 Change Zoom Tool 16 To see the whole connection path at once choose Zoom High to zoom out from Detail Zoom to High Zoom Determining the Scope of an Instance Remember that the last expanded net is shown in cyan unless it is also the current global selection That makes connections easier to fol
61. pter 1 VSB Overview visual SmartBrowser User s Manual NT version View and Tool Buttons You can use the Visual SmartBrowser s view and tool buttons to view a design netlist in several different ways Figure 4 illustrates the view and tool buttons used in VSB Examine View Connection View Net Tags Causal Trace Hierarchy View Global Selection Windows amp Monitors Figure 4 View and Tool Buttons e Create Hierarchy View Opens a Hierarchy View based on the selected circuit object Same as View Create Hierarchy View e Create Connection View Opens a Connection View based on the selected circuit object Same as View Create Connection View e Create Examine View Opens an Examine View based on the selected circuit object In this view you can see and edit timing and initial state values along with other details about the selected object Same as View Create Examine View e Show Global Selection Tool Opens the Global Selection tool in which you can select nets ports and model instances by name Same as Tools Show Global Selection Tool e Show Net Tags Tool Opens the Net Tags tool in which you can tag nets Tags are represented by different colors to make them easier to see Same as Tools Show Net Tags Tool e Show Windows amp Monitors Tool Opens the Windows amp Monitors tool which you can use to set up windows and monitors for nets states and buses Same as Tools Show Windows amp Mo
62. rmation refer to Creating and Editing Buses on page 47 The buttons to the right of the list have the following functions e Select Global Makes the selected item in the list the global selection e Clear Selection Removes the selected item from the list e Clear List Removes all items from the list e Preview File Opens a dialog that shows what the generated model command file will look like e Save To File Creates a model command file MCF containing the current information on windows monitors and bus definitions e Illegal Chars Specifies illegal characters for window and monitor names Windowing or Monitoring Nets and or States To window or monitor one or more nets and or states follow these steps 1 Click on the Automatically Add New Selections button The cursor will turn into a cross hair N Choose the Nets and or States check box es in the Object Type field 3 Choose the Windows and or Monitors check box es in the Add To field 4 While the pointer is a cross hair select the net s and or state s you want Every item you select is added to the appropriate window or monitor lists Click on the Automatically Add New Selections button again to turn off automatic addition February 2001 Synopsys Inc 45 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Creating and Editing an Alias To create an alias for a net or a state follow these steps 1 In the upper graphical pane select
63. roduction The Visual SmartBrowser VSB enables you to improve your productivity when working with SmartCircuit models of FPGA and CPLD devices This chapter presents a brief tutorial that you can use as the basis for learning how to use the VSB You can use the tutorial to learn how to e Work with a post layout netlist in the SmartCircuit ccn format e Examine the design in various graphical views e Define buses e Specify circuit objects to window and monitor during simulation e Create a model control file for simulation Setting Up the Tutorial You open a compiled design netlist ccn file by starting VSB with the netlist file name on the command line VSB will not invoke without a file name In this section you will use a file prepared specially for the tutorial The file is located at LMC_HOME lib data vsb_tutorial ccn 1 To begin the tutorial open the sample netlist included in your SmartModel Library installation using this command vsb LMC HOMESMlibNdataNvsb tutorial ccn If you already have the VSB running and your current design is not vsb tutorial cnn re invoke the VSB using the previous command February 2001 Synopsys Inc 57 Chapter 2 Learning Visual SmartBrowser Visual SmartBrowser User s Manual NT version After VSB reads the tutorial design netlist it briefly shows the number of instances in the design and then creates a VSB Main Window that looks like this ER Visual SmartBrowser ysb_
64. rowser User s Manual NT version Chapter 1 VSB Overview Bringing a View to the Foreground To bring a view to the foreground click on the corresponding icon in the view control pane You can also choose the view by name from the Window menu If necessary you can click on the right and left arrow buttons to scroll more view icons into the view control pane Raising and Iconifying Views To raise or iconify all views choose the following menu entries Window gt Raise All Views Window gt Iconify All Views Creating a Sparse Hierarchy View To create a sparse hierarchy view follow these steps 1 If necessary bring the appropriate Connection View to the foreground 2 In the Connection View use the Expand Selection Collapse Selection Hide Selected Circuit Object and or Hide Unconnected Circuit Objects tools to display the instances and ports of interest 3 Click on the Create Sparse Hierarchy button T Hier A new Hierarchy View displays just the portion of the design hierarchy that contains the ports and instances in the active Connection View Creating a Model Command File MCF To create a model command file MCF follow these steps 1 Click on the Show Windows amp Monitors Tool button 2 Specify the nets states and buses you want to window or monitor 3 Click on the Save To File button For detailed instructions refer to Windows amp Monitors Tool on page 44 February 2001 Synopsys Inc 17 Cha
65. ry 2001 Visual SmartBrowser User s Manual NT version Figures Figures Pipe ls JPLISDOS DIOS 4aasas xictndikoki hpd Aia oF od r3 iibi med d rd radon 12 Figure 2 Various VSB Views and Tools 22 060444s6 sakksRERRR RR ae senses 13 Pies VSB Main Window 6 556 6668 45465 6s EES dC ded RR CR ESOS SS 15 Pigmes Viewand Tool Pas uxuiaquasdebad hag NU nt ss rr e eo aoa 18 Hipurel View Comirol Pane Louusas vaskexpdxsdR EX RRESXR SXDR ERA RESGS 19 PENES SUUSA ee ee ee ee eT ee eee er eT oer ee 19 Figure 7 Zoom Control BUNS bk on Scri Mee ier ea ed dea etn 20 Fig res Hietarchy View ssccsssocruaredaodu ak E WATER SPESE EUR qEe NESA 23 Figure 9 Hierarchy View Pop Up Menu soeur dd ud ERR RR Re n 25 Figure 10 Hierarchy View Tool Bar Buttons Lie ak n m PRX Ce aces 27 Figure ll Connection View uilsssa he ERE GREG HERAR AREE RERO ARR E AREE Rd 29 Figure 12 Connection View Pop Up Menu g4c6 440500055 4954405455494 555 32 Figure 13 Connection View Tool Bar Buttons 44 64 6 n464 4 ohh aem ERA ed eae 34 Figure 14 Examine View Window jaca weeds oe dae oes e End ESERE SERE A ds 36 Figure 15 Examine View Pop Up Menu 4c95 6 4s ee S454 65455446 534644546654 38 Figure 16 Global Selection Tool aia peewee Ro Ae UE Ree Eae eae o deseo dues 39 Figure 17 Net Tags Tol cs icecvs as tvncesxedunaesiawd see bsaevsascisueds 42 Figure 18 Windows amp Monitors Tool i2essseua bc assdebi eqce pRAe qubd dde si 44 Figure 19 Creating Buses in Windows amp Monitors Tool
66. st the different menus and the functions you can access from them File Menu The following commands are available from within the File menu e Open Displays a dialog box in which you select a netlist file to open e Save As Saves the active netlist file This option is available when you change timing or initial state values Changes do not affect the design from which the netlist file was created e file name s Brings up a ccn file that has been previously opened e Exit Ends the active VSB session Options Menu The following commands are available from within the Options menu e Toolbar Toggles display of the tools icons that access the different windows e Status Bar Toggles display of status information in the main window e Show Tool Tips Toggles display of tool descriptions e Show Circuit Object Tips Toggles display of circuit object descriptions February 2001 Synopsys Inc 55 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version View Menu The following commands are available from within the View menu e Hierarchy Opens a Hierarchy View based on the selected object e Connection Opens a Connection View based on the selected object e Examine Opens an Examine View based on the selected object You can use an Examine View to edit timing and initial state values and view other details about the selected object e Message Window Opens a VSB message window in which you can see the version of th
67. sys Inc 37 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version Examine View Pop Up Menu You can use the Examine View pop up menu shown in Figure 15 to perform several functions Raise Application Shell Window View Controls Contest Sensitive Help Shift F Figure 15 Examine View Pop Up Menu e Raise Application Shell Window Brings the VSB main window to the top e View Controls o Iconify Reduces the active Examine View to an icon o Close Closes the active Examine View 38 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview Global Selection Tool You can use the Global Selection dialog box to select an instance net or port by name You can also open this dialog box to see which circuit object is the global selection as shown in Figure 16 wf Global Selection vsb tutorial ccn View Window Help Circuit Object s12 Scope 15137 C Parts Select Global C Nets nstances Scope of instance Object Type Object type Ports Nets Instances Browe Filter Close Help Selection Instance 1 12 Type DFPC Scope 1 13 For Help press F1 A Figure 16 Global Selection Tool If you know the name of the circuit object you want to select type the name in the Circuit Object field and if necessary type the path to the circuit object in the Scope field Make sure the Object Type selection is
68. t U879 clkbuf OUT net n2468 ns X 1 on cell port U879 clkio buf OUT net U879 clkio bufsig 0 0 ns X 1 on model port FCLOCK Report completed OW OW Ul O xo w w To find out the underlying cause of the problem do the following Eu 1 In the main window click on the Causal Trace button ss Ed 2 Cut and paste the appropriate portion of your simulation output into the VSB Causal Trace window February 2001 Synopsys Inc 53 Chapter 1 VSB Overview visual SmartBrowser User s Manual NT version YSB Causal Trace iof x Enter Trace Text from Simulation c Model Trace in TB DUT CFPGA SMARTMODEL at 16100 ps Beginning cause report from JDOE FSRAMCE 16 1 ns 0 gt X on cell port U1287 1120 GTS TRI OUT net 16 1 ns 0 gt X on cell port U1287 1120 0UT net U1287 ns 0 gt X on cell port FSRAMCE INT reg OUT net X gt 1 on cell port FSRAMCE INT reg CLK net ns X gt 1 on cell port U879 clkbuf OUT net n2468 ns X gt 1 on cell port U879 clkio buf OUT net 0 0 ns X 1 on model port FCLOCK Report completed OO C C Li n oe Show Trace Figure 20 Causal Trace Tool a Click on the Show Trace button The VSB will parse the output looking for cause reports in the LMC Model Trace output If it finds complete reports it will open a new Connection View for the report and show the cause and effect path
69. the State Form Timing Form wi State Form A Close Help Selected State Name STATE Accent iM cadiicatan Description m State of DFPC Value in ccn File u State parameter Current Value u Bit Position 0 4 For Help press F1 18 Click on the STATE parameter in the list As shown this is the internal state of a DFPC instance Its default value is u but you can change the initial value for this instance Valid bit values include 0 1 x unknown u uninitialized z high impedance and unspecified For a complex multiple bit state value as with a RAM device you can find a specific bit by dragging the Bit Position slider from right to left or clicking on the arrow buttons beside the slider VSB shows the current bit position above the slider February 2001 Synopsys Inc 63 Chapter 2 Learning Visual SmartBrowser 19 Enter a new value in the Current Value field visual SmartBrowser User s Manual NT version As soon as you begin typing the Accept Modification button becomes available Remember we ll leave the values unchanged for this exercise 20 When you re ready click on the Close button in the I 12 Examine View Identifying Hierarchical and SCV Instances There s another difference between hierarchical instances and SCV instances 1 64 In the Hierarchy View click on the instruction_cell instance named I 12 If the Hierarchy Vie
70. the list of ports below the hierarchy pane double click on the port FA1A_A cited in the cause report 52 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview Next trace the output signals 1 In Connection View double click on the port to show the fan out signals 2 On the instance FA1A_A U0 cited in the next line of the cause report double click on the cited port Y 3 On the instance I 4 UO cited in the next line of the report double click on the cited port CO If necessary use the scroll bar at the bottom of the connection pane to display instances to the right 4 On the instance I 4 U1 double click on port S 5 On the instance FA1A CO UO double click on port PAD 6 Follow net FA1A CO to output port FATA CO Using Traces from a Simulation Run in Causal Trace You can use the Causal Trace tool to cut and paste traces from a simulation in order to look for cause and effect information for a model Here is an example of traces in a cause report generated from the simulation of a model LMC Model Trace in TB DUT CFPGA SMARTMODEL at 16100 ps Beginning cause report from JDOE FSRAMCE 16 1 ns 0 gt X on cell port U1287 1120 GTS TRI OUT net FSRAMCE 16 1 ns 0 gt X on cell port U1287 1120 0UT net U1287 1120 GTS TRI ns 0 X on cell port FSRAMCE INT reg OUT net n3398 ns X 1 on cell port FSRAMCE INT reg CLK net n2468 ns X 1 on cell por
71. tion view 21 medium in hierarchy view 20 26 27 34 February 2001 Synopsys Inc 85
72. to learn about With VSB you can define windows and monitors on nets states and buses and save them in a model control file for use during simulation 1 Bring the main window to the top and click on the Show Windows amp Monitors Tool button H 2 From the hierarchy tree at the top of the Windows amp Monitors tool choose Monitors gt Buses 3 In the Add Bus field type N7_Bus and press the Enter key or Return 4 In the hierarchy tree select the bus you just created February 2001 Synopsys Inc 75 Chapter 2 Learning Visual SmartBrowser Visual SmartBrowser User s Manual NT version Windows amp Monitors vsb_tutorial ccn 5 In the Object Type area click on the Nets View Window check box to turn it on 6 Click on the Automatically Add New H Windows Monitors Selections check box to turn it on Nets i States The pointer changes to a cross hair As ij Buses long as the pointer is a cross hair any net ij N7_Bus that you select globally is added to the JT ASINS gt 1413 N 7 N7_Bus net Use the center of the TF A 12 N 7 gt _1 12_N 7 cross hair to select circuit objects Element E ditor 7 Ensure that the Bus check box in the Add To Add Bus V7 Bus section is checked and make sure the N7 Bus appears in the text field Window Maye lenient I Mandar ie 8 Bring the Connection View fro
73. to the top e Zoom Displays several zoom levels detail high medium and low Similar to the Zoom tools on the Connection View Tool Bar e View Controls o Toolbar Toggles display of the tool bar in the active Connection View o Status Bar Toggles display of status information in the active Connection View o Iconify Reduces the active Connection View to an icon o Close Closes the active Connection View Same as the Close tool on the Connection View Tool Bar e Expand Shows the connections from the selected port Same as the Expand tool on the Connection View Tool Bar 32 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 1 VSB Overview e Collapse Hides the connections from the selected port Note that the disconnected objects remain visible to hide them click the Hide Unconnected Objects tool Same as the Collapse tool on the Connection View Tool Bar Hide nc s e Find Current Selection Centers the selected circuit object in the active Connection View if the view contains the object Use this command after you select an object in another view or tool Same as the Find tool on the Connection View Tool Bar e Add Current Selection Adds an instance selected in some other view to the active Connection View e Auto Find Selection When possible automatically updates the active Connection View to focus on the selected object e Create Sparse Hierarchy View Displays
74. tutorial ccn instruction_register File Options View Tools Window Help 3 28 jet Selection Instance TOP Type instruction register Scope or Help press F1 Unmodified i Fi gt Note Some illustrations of the windows in this tutorial have been slightly altered in order to make them less awkward on the page If a window in your VSB session comes up slightly different than what you see in an illustration don t worry the graphic has probably been adjusted Before you actually get started with the tutorial here are some suggestions for arranging your screen so you have more room to work 1 Move the main window to the upper right corner of your screen 2 If you are using this tutorial online in PDF format move the tutorial window to the lower right corner and make it as tall as possible without covering the main window 3 Press the page button in the Acrobat Reader to turn off the bookmarks and maximize your reading space 4 Make the tutorial window about a third to a fourth of the overall screen width depending on the size of your monitor You can always adjust the windows to your liking later 58 Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser Using the VSB The main window is not only an entry point into your design when you invoke VSB but it provides you a means to display different windows that have spe
75. w is concealed somewhere you can use the TOP icon in the View Control Pane of the main window to pop it forward In the port pane double click on port CLOCK IR VSB creates a new Connection View based on port CLOCK IR From there you can explore the receivers connected to the port In the Connection View click the right mouse button to display the popup menu Choose the Raise Application Shell Window command to bring the main window to the top In the View Control pane of the main window click on the icon labeled TOP Click on the DFPC SCV instance named I 12 In the port pane of the TOP Hierarchy View double click on port D Because D is a port on an SCV instance 71 Connection View CLOCK Mi E3 Actions View Window Help f Colapse CLOCK_IR Raise Application Shell Window Zoom View Eypend allapse Iiridifsumen Selection Add Current Selection Auto Find Selection Create Sparse Hierarchy View Hide Unconnected objects there s no underlying hierarchy so the new Connection View is based on the instance rather than the port Now explore the receivers connected to the DFPC instance I 12 a For this exercise deselect the DFPC instance in the top Hierarchy View Synopsys Inc February 2001 Visual SmartBrowser User s Manual NT version Chapter 2 Learning Visual SmartBrowser b In the Connection View of the DFPC I 12 instance d

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