CATC Traffic Generator Flexible USB Host Emulator User`s Manual
Contents
1. DATAD 00000001 00 05 01 00 00 00 00 00 SS er ADDR 00000001 0x007 Bus Speed Full 4 The functionality of each icon and menu item is identified in the left portion of the status bar at the bottom of the window when the pointing device cursor moves over the icon The following menus are always present in the CATC Traffic Generator main display window e File e Edit e Setup e Generator Page 10 CATC CATC Traffic Generator User s Manual Version 2 1 e Search e Window e Help Clicking on any of these menus will expand it offering various function selections The following sections describe in detail the operation of each menu item 6 3 The Status Bar The status bar is located at the bottom of the Traffic Generator main display window The functionality of each icon and menu item is briefly described in the bar when the pointing device cursor moves over the icon item At other times the bar is divided into three segments only one of which is used in the Traffic Generator the transmission rate of the current file low or full speed is displayed in the center segment 6 4 The File Menu The file menu behaves as a standard Windows File menu allowing the operator to open existing generator traffic data files from previous sessions save the data file from the current session import data files recorded by CATC USB Bus amp Protocol Analyzers create edit data file2. Computer Access Technology Corporation ENG 2403 Walsh Avenue Santa Clara CA 95051 1302 Tel 1 408 727 6600 Fax 1 408 727 6622 CATC Traffic Generator Flexible USB Host Emulator User s Manual Version 2 1 6 November 1998 Copyright O 1996 1998 Computer Access Technology Corporation CATC CATC and Traffic Generator are trademarks of Computer Access Technology Corporation CATC CATC Traffic Generator User s Manual Version 2 1 TABLE OF CONTENTS Pe INTRODUGTION bisissccscdeddsoisscoscdssdecssecascvecdessesseceudededueessecassdectesssssvecoscussieassouessdecdescesssoendeueeueagevseesssateeden seacessbonceees 1 1 1 USB OVERVIEW renere eeaeee eii 2 2 CATC TRAFFIC GENERA TOR SYSTEM civssscsccesssssstonsseasssnssssscsencccastssacdesesessoncsctestesecsenseeeseseecdesedensscsssccsenceses 2 2 AGENERAL t2 25 ocr Ati ira Ati a a oan 2 2 2 CATC TRAFFIC GENERATOR SYSTEM COMPONENTS sssscceessseeceessececeesaececsencecessueeecsesaececeeeeecesseeecseueeessneaeens 3 2 3 THE USB TRAFFIC GENERATOR BOX catas as 4 2 31 Eront Panel Description oies e ei a oeo e aeaaea niran seen stash seee a EAEn a ERE 4 2 3 2 Back Panel Descrip iia dad sa E E AEEA Na Sawn Deve ARC EA a Suan VLA EERE NEE EEE eS 4 2 3 3 Single Burst Transmission Mode visiirisi eroriari rE okes ei a oeie kE a cone i iea erena 5 2 3 4 Continuous Transmission Mode ccccccccccccccessscccececsscsnscecececssussueeeececssssaeseecseseuesecesesesesussecececeesesssaeeeseceenen
3. Syne 00000001 Eop 001 PRE PID 001 11100 SEO bit times Hub setup time 4 bit times K state bit times Y Use USB defaults Disable bit stuffing DATA field only M Auto IDLE length compensation Y Auto calculate CRC Bit Width Cancel Help Only relevant fields can be modified Start with the PID Type field the appropriate fields for the selected PID type will subsequently become active For example for the SETUP packet shown above the FRAME and the DATA field are not activated If the PID is changed to SOF the FRAME f field becomes active For DATAO and DATA1 PIDs the DATA field becomes active Page 14 CATC CATC Traffic Generator User s Manual Version 2 1 6 5 1 1 Data Field Editing Hexadecimal information in the DATA field can be edited directly in the Add Packet window the display scrolls horizontally as necessary When the field contains more than eight bytes however it is generally more convenient to invoke the data editor by clicking on the Edit button to the right of the data field display This brings up a larger window in which it is possible to create and edit larger strings of hexadecimal data indeed it is possible to enter more than 1164 bytes of data the field size limit though the error will be reported when the generator software attempts to construct the specified packet 6 5 1 2 PID Selection The PID type field permits selection of one specific
4. comments and print all or selected portions of the selected data file The File menu includes the following functions 6 4 1 New Create and open a new CATC Traffic Generator traffic data file Activating this menu item opens up the following dialog box Document Type Full Speed IX Generate SOF Start with Frame jo C Low Speed Generate Keep Alive C Import from CATC USB Analyzer USB File The new file may be opened as an empty file allowing the operator to specify packets one by one by clearing the Generate SOF check box or in low speed mode by clearing the Generate Keep Alive check box Another option is opening the file with pre existing start of frame packets by marking the Generate SOF check box or in low speed mode with pre existing EOP packets by marking the Generate Keep Alive check box In this way custom Page 11 CATC CATC Traffic Generator User s Manual Version 2 1 packets can be added to a set of existing packets A third option is importing a traffic data file previously recorded by a CATC USB Bus amp Protocol Analyzer 6 4 2 Open Open an existing USB traffic data file 6 4 3 Close Close an open USB traffic data file 6 4 4 Save Save the current USB traffic data file with its existing file name 6 4 5 Save As Save the current USB traffic data file with a new file name 6 4 6 Save As Text Save all or a selected range of the current U
5. 29 Start Stop BUS A Ia 24 6 8 THE SEARCH MENO cut ees anctadtse cies ea sacs TEA S eE aan eee a aa clans asa tn gete tenet cleus 24 OS L Goto Packet an oa eee acia encerio ch a EE aO EEE E EREE 25 6 9 THE WINDOW MENU coi 25 6 10 THE HELP MENO coria ewsccee Seccb hts BATS EAs ea Locegba cus le eG orae EE eSEE E tole EEEE E eo EET eos aes 25 6 11 THE QUICK EDIT POP UP MENU nit a add 25 6 12 THE DATA FIELD POP UP MENU rra ee arra ran oe etaar vasescseiscessauassactesdevscebetsdecoecdsvass S saai Ea Topine 25 7 HOW TO CONTACT CATC uuu ccssssccsssscesccscescesssssnscsssnsssssncsnessssncssessessssessnesescessnessssnessessessossssnssossnesseseosses 26 8 WARRANTY AND LICENSE cscsscssssscsscsssescsssnssscsessnessssnescessssesesssssoscossnessssnessesessnescsssessessossnssossnessessosses 26 11 CATC CATC Traffic Generator User s Manual Version 2 1 1 INTRODUCTION The CATC TRAFFIC GENERATOR host emulator is an invaluable development and test tool for Universal Serial Bus designers serving as a flexible USB host for the development of USB devices hubs and silicon The Traffic Generator host enables stress limit testing of USB designs and observation of design behavior under faulty bus conditions Traffic Generator Features e fully programmable stand alone unit generates desired USB traffic e serves as a flexible USB host for the development of USB devices hubs and silicon e easy to use Windows application program Win 3 1 Win
6. 95 and Win NT compatible with CATC s USB Bus amp Protocol Analyzers helps create desired USB bit patterns e supports both legal per USB specifications and illegal messages e transmits full speed FS low speed LS and combined root port USB message packets e operates in both single burst and continuous repetitive transmission modes e one two or four unique USB traffic patterns can be individually programmed and selected e individual bits in a 1 048 576 bit 2 USB traffic buffer can be uniquely specified 87 40ns of FS or 699 04ns of LS traffic more than 87 full USB frames e each bit programmable with variable bit widths 50 75 and 100 e uses an accurate on board 48 0 MHz oscillator or an external oscillator e tested for compliance with the USB specification e one year warranty and hot line customer support Following are some examples of useful bus events supported by CATC s USB Traffic Generator tool e legal bus conditions legal messages and timing e illegal bus conditions such as e bad PID e bad CRCS5 or CRC16 e bad stuffing bits e short sync sequence less than 7 zeroes e short idle time e short SEO time e wrong message sequence e narrow bits 50 or 75 e clock jitter and boundary frequency e single message response single burst mode e product failure statistics continuous mode Page 1 CATC CATC Traffic Generator User s Manual Version 2 1 This document explains how to conne
7. Website http www catc com 8 WARRANTY AND LICENSE Computer Access Technology Corporation hereafter CATC warrants this product to be free from defects in material content and workmanship and agrees to repair or replace any part of the enclosed unit that proves defective under these terms and conditions Parts and labor are warranted for one year from the date of first purchase The CATC Traffic Generator software is licensed for use on a single PC The software may be copied for backup purposes only This warranty covers all defects in material or workmanship It does not cover accidents misuse neglect unauthorized product modification or acts of nature Except as expressly provided above CATC makes no warranties or conditions express implied or statutory including without limitation the implied warranties of merchantability and fitness for a particular purpose CATC shall not be liable for damage to other property caused by any defects in this product damages based upon inconvenience loss of use of the product loss of time or data commercial loss or any other damages whether special incidental consequential or otherwise whether under theory of contract tort including negligence indemnity product liability or otherwise In no event shall CATC s liability exceed the total amount paid to CATC for this product Page 26
8. bit streams for set up operation modes for and control the generator The desired traffic bit pattern can be created from scratch individually defining each packet or files with previously designed bit patterns may be opened and edited The program can import and display any data file with actual USB traffic previously recorded by CATC s USB Bus amp Protocol Analyzers Any packets from this file can be selected and modified bit by bit Packets can also be deleted added and copied pasted Each field in every USB packet can be individually specified Sync PID Frame Addr Endp Data CRC etc The operator can also define the length of the idle time between packets and individually change any bit in any packet Once the traffic data pattern has been created it can be stored as a disk file and or downloaded to the Generator s Flash memory Page 9 CATC CATC Traffic Generator User s Manual Version 2 1 6 2 The Main Display Window The CATC Traffic Generator s main display incorporates a set of typical Windows pull down menus described below Additionally several of the most frequently used functions can be activated by specific icons located on the command bar Finally several operations can be invoked by clicking directly on the affected packet fields s CATC USB Traffic Generator DEYDESC GEN CATC Default View Pi EG y Eile Edit Setup Generator Search Window Help laj x AERE 2 gt A RESET 3
9. iaeaea S RESET SUSPEND _ RESUME lt Users may choose to experiment with this option to achieve a color combination that is best suited to a particular graphic system A brighter color might be appropriate for a specific field that should stand out in the display e g the Setup PID field Note that the color of an Invalid Data error field cannot be changed it is permanently set to red 6 6 1 3 Load and Save Configuration The Generator program automatically sets up all display options as specified in the default opt file Should these settings be changed they can be saved as a new default options file or undera different file name The latter option permits the loading from disk of a complete set of previously selected options Page 21 CATC CATC Traffic Generator User s Manual Version 2 1 6 6 2 Generator Options The Generator Options menu item allows configuration of the hardware for using the USB Traffic Generator box Memory Partition Setup Parallel Port One Partition LPT 1 378H Two Partitions C LPT 2 278H C Four Partitions C LPT 3 3BCH Memory Partition Info Partition Size in of frames 87 FS Frames 6 6 2 1 Parallel Port This group box allows the selection of one of three parallel ports with which to communicate with the Generator hardware 6 6 2 2 Memory Partition Setup The options presented in this group allow division of t
10. or an external oscillator provided by the user When the generator circuitry reaches the last defined byte in the packet it resets and starts reading the Flash memory from the beginning Thus the same up to 1 024K bit pattern can be transmitted continuously This is called Continuous Transmission mode Alternatively in the Single burst Transmission mode when the generator circuitry reads the last byte in the packet it stops transmitting and awaits further instructions If for example the page selection is set to P1 using the Select front panel switch the Traffic Generator circuitry will read the Flash memory beginning at address 08000h If the Cont Single switch is set to Continuous Transmission mode and the Send button pressed the generator will start transmitting sequentially from address 08000h continue until it reaches the end of the selected packet stream or address OFFFFh whichever comes first read the next byte from address 08000h and so on repeatedly Page 6 CATC CATC Traffic Generator User s Manual Version 2 1 4 SYSTEM SETUP Set the CATC USB Traffic Generator Box near the USB system under test In the USB system at a point where generated USB bus traffic is desired connect the CATC Traffic Generator tool as follows Connect one side of a USB cable to the USB connector USB OUT on the front panel of the USB Traffic Generator box Connect the other side of the USB cable to the USB d
11. the Reorder Frame Numbers menu item is selected the following dialog box opens allowing selection of an initial frame number All frame numbers in the current traffic data file will be renumbered in serial order beginning with the specified hexadecimal value and given standard bit widths i e any narrow bit widths that had been specified in frame number fields will be eliminated Page 18 CATC CATC Traffic Generator User s Manual Version 2 1 Reorder Frame Numbers Fa Begin with Frame Hex 0 0x7FF Note For low speed traffic files this function is disabled as its meaning is undefined 6 6 The Setup Menu The CATC Traffic Generator software provides many options for viewing CATC s USB Bus 4 Protocol Analyzer and Traffic Generator files and for editing the various USB packets The Setup menu includes Display and Generator Options functions that allow customization of the generation and display of USB protocol traffic 6 6 1 Display Options The Display Options menu item allows customization of the way that the USB traffic data files are presented on the screen The USB Data Display Options dialog box includes control buttons for the selection of data presentation and screen formatting options plus the ability to save and restore custom display option configurations USB Data Display Options X Display Configuration Name CATC Default Yiew Display Options Load Field Formats Fiel
12. the generator starts to transmit and stays low during the USB packet transmission Page 5 CATC CATC Traffic Generator User s Manual Version 2 1 Note For Traffic Generator boxes that do not have the negative going pulse annotation on the back panel as illustrated in the above diagram the Trigger Out signal is a positive going TTL signal 3 MEMORY ORGANIZATION The Flash memory devices used on the USB Traffic Generator board are 1 024K bit devices organized as 128K x 8 bits The generator circuitry reads the Flash data sequentially one byte after another and transmits the data serially on the USB bus the D and D wires Each bit in the Flash memory corresponds to a bit on the USB bus Thus the generator can be programmed to transmit 1 024K different bits The 128K Flash memory bytes are divided into 4 equal segments pages of 32K bytes each organized as follows number of coy selected P3 18000 1ERFR 1FFFF A lt P2 10000 17FFF_ 17FFF P1 08000 0FFFF_ OFFFF 64K PO 00000 07FFF_ 07FFF The memory can be used as one partition of 128K bytes as two partitions of 64K bytes or as four partitions of 32K bytes each Different data patterns can be loaded into each partition and used at the user s discretion The active partition is selected from the front panel see section 2 3 5 or by software These bits can be transmitted using three different internal clock frequencies 1 5 MHz 12 MHz 48 MHz
13. type of PID for this packet Once the PID type is selected the appropriate packet fields for the selected PID type become active It is also possible to specify a Free Format entry when this choice is made the user can edit the PID field as desired using a valid or invalid value and make use of the DATA field to specify a bit string to make up the remainder of the packet 6 5 1 3 Static Bus Event Selection The Static Bus Event field enables selection of the Reset Suspend and Resume static bus events 6 5 1 4 Preamble Selection This section is used to generate low speed packets on a full speed branch an operation that is only meaningful when sending traffic to a hub Checking the Issue Preamble box will cause a preamble to be sent using the indicated Sync and PRE PID values the PRE PID value cannot be changed as this is what defines a preamble Following the preamble and the hub setup delay the remainder of the packet will be transmitted in low speed mode Full speed mode will resume at the beginning of the subsequent packet Note that low speed packets mixed with full speed ones consume memory partition space equivalent to their transmission times 1 e each low speed bit takes up the space of eight full speed bits 6 5 1 5 Packet Field Modification Each individual bit in any active packet field can be modified 6 5 1 6 USB Defaults The USB standard defines specific bit sequences for Sync 00000001 and EOP 00
14. 1 plus a 4 bit hub setup time following preambles In order to change these values in a particular packet it is first necessary to clear the Use USB defaults check box 6 5 1 7 IDLE Length Control The CATC Traffic Generator software will normally compute the between packet IDLE times necessary to sustain a one millisecond spacing between SOF tokens between keep alive strobes in low speed traffic Occasionally the user may wish to modify the idle times in some non standard fashion This can be accomplished by clearing the Auto IDLE length compensation check box which gives access to the IDLE field of the previous packet Page 15 CATC CATC Traffic Generator User s Manual Version 2 1 In general IDLE length compensation works as follows When the software generates an initial sequence of SOF packets it does so with IDLE times appropriate to maintain the required spacing Whenever a packet is insert into the sequence its transmission time is subtracted from the previous packet s IDLE time Whenever a packet is deleted from the sequence its transmission time is added to the previous packet s IDLE time In general this will work as expected for the casual creation and deletion of packets should the user elect to manually specify IDLE times however opportunities abound to create timing sequences that violate the USB standard It is also possible to create timing violations with combinations of packet deletion and frame
15. Generator hardware is now ready for operation 5 SOFTWARE INSTALLATION WIN 3 1 WIN 95 amp WIN NT 5 1 General To install the CATC Traffic Generator software run the install exe setup exe for Win NT application from the CATC Traffic Generator software diskette and follow the instructions on the screen Note that on Windows NT systems it is necessary to log in as administrator The installation program copies the following files to the PC s hard drive Page 7 CATC CATC Traffic Generator User s Manual Version 2 1 to the USBTGEN directory or that otherwise specified by the user e USBTGEN EXE executable code of the CATC Traffic Generator program e USBTGEN HLP CATC Traffic Generator help file e DEFAULT OPT default DISPLAY function settings e DEMO GEN sample CATC Traffic Generator data file e SETADDR GEN sample CATC Traffic Generator data file e CFGDESC GEN sample CATC Traffic Generator data file e DEVDESC GEN sample CATC Traffic Generator data file e USBTRGEN DLL parallel port interface library Windows NT only to the WINDOWS SYSTEM directory for Win 3 1 amp Win 95 systems only e CTL3D DLL Windows 3D Control Library e CTL3DV2 DLL Windows 3D Control Library to the WINNT S YSTEM32 directory for Win NT only e CTL3D32 DLL Windows 3D Control Library to the WINNT SYSTEM32 DRIVERS directory for Win NT only e USBTRGEN SYS Parallel port driver The installation program creates a program grou
16. SB traffic data file in a text format for further viewing analysis and or printing Activating this menu item opens up the following selection box Save Current File in Text Format X Total number of packets 32 From Packet if Exclude SOFs To Packet Note You can save no more than 1000 packets Up to 1 000 packets can be saved at a time The operator can elect to save SOF packets or exclude them from the text file The saved file can be opened with any standard text editor Note that unlike the window display which is quite configurable text files are always created in a standardized form All field values are represented as binary digits except for data fields which are hexadecimal the most significant bit is located on the right except for data and CRC fields which have their MSBs on the left Page 12 CATC CATC Traffic Generator User s Manual Version 2 1 6 4 7 Edit Comment Create view and or edit the 50 character comment field associated with each USB traffic data file 6 4 8 Printer Setup The Printer Setup menu item is a standard Windows function that allows configuring of the printer paper size source orientation etc 6 4 9 Print Print all or a selected range of the current USB traffic data file Activating this menu item opens up the following selection box Print Packet s X Total number of packets 34 From packet To packet Comment 60 cha
17. amble Selection oooconocnnocnooonononcconocnnos 6 5 1 5 Packet Field Modification 6 5 1 6 USB Defaults coria dicta 6 5 1 7 IDLE Length Control 6 5 1 8 Bit Stuffing Control s s s 6 5 1 9 CRC Calculation istir rerit 635411 0 Bit Width Modificatiom ic A A P EEEE O E E ESEE E E E 6 3 3 Modifye ls dl de tdt ODIA COPY A A A A A A CATC CATC Traffic Generator User s Manual Version 2 1 6 5 5 Reorder Frame Numbers ccccccccccccccccseccccscsecessevsesuevsceusnenssscccccccscscsecssccccsscscssssssssssessesessseseseseseseeseesseeseeeees 6 6 THE SETUP MENU 2x ccsivesfesoxteeses ETEO EE E ETETE AEE AE ccouseevtetadecdccdvneeseusdne EE E E ERE 6 6 1 Display Options ocres o EE a E ene lee KE EEEE 6 6 1 1 Field Formats ui E E TE E N 6 6 1 2 Field Colors 6 6 1 3 Load and Save Configuration 6 6 2 Generator OPONSE AA Ai 22 6 60 25 Parallel Port ati id EEE 22 6 6 2 2 Memory Partition Enea e a E E bo secdes cep eae aE aE ee E erae A E E ee 22 6 6 2 3 Memory Partition Info 2 ie desd ace ge aos 22 6 7 THE GENERATOR MENU sierosa eenen erae sven copes sense sdstea sabe EE EE eer EE E Ee r EEE EE ear ETE IESE Ee ER tSr Ee 23 6 7 1 Generator Download Configuration ssesssesesseseeeeeeeseresesreseseresrsresrsereesresrrrresesreereseesesteetesresrssesereseseeet 23 6 7 2 Generator Playback Configuration cnica etvcetssnesssevete tusuasa e a ai 24 62 251 Playback Mods aaa hase 24 6 1 2 2Partition to Ply BACK ornin eria TA aio io it 24 0
18. an external clock source is selected e The two position Cont Single switch selects between the single burst and continuous packet transmission modes e The Send push button activates the USB packet transmission e The Select push button selects the active memory partition and the clock source 2 3 2 Back Panel Description Baie Ext CLK OUT Parallel Port 9V DC 0900 Gay Page 4 CATC CATC Traffic Generator User s Manual Version 2 1 The back panel has five connectors e The 9V DC 500mA input power connector is marked 9V DC e A 25 pin parallel port connector is marked Parallel Port e A trigger output BNC connector is marked Trigger OUT e A trigger input BNC connector is marked Trigger IN e An external oscillator input BNC connector is marked Ext CLK 2 3 3 Single Burst Transmission Mode When the Cont Single switch on the front panel is set to the single burst mode the momentary Send switch activates the single burst transmission Each time the switch is pressed the generator transmits a single burst of the same data pattern 2 3 4 Continuous Transmission Mode When the Cont Single switch is set to the continuous transmission mode the generator will start to continuously transmit the USB packet data when the momentary Send switch is activated In this mode the generator will stop transmitting when the Send button is pres
19. back mode In this mode the Start and Stop buttons are used to begin and end transmission respectively When the single burst mode is selected the Start button will cause the hardware to play back the downloaded patterns once only The Stop button does not require pressing in this case as transmission will automatically stop when it has reached the end 6 7 2 2 Partition to Play Back Depending on how the Flash memory was configured from the Generator Setup screen available choices are enabled for selection After the selection has been made the corresponding page LEDs on the front panel will be illuminated 6 7 2 3 Start Stop Buttons When one of these buttons is selected the options selected on this dialog screen will take effect and the front panel settings on the hardware will be overridden Any subsequent button press on the front panel will also override the settings made from the software 6 8 The Search Menu The CATC Traffic Generator software provides a single function Go To Packet to navigate the traffic file it is afforded its own menu for compatibility with the CATC USB Bus amp Protocol Analyzers Page 24 CATC CATC Traffic Generator User s Manual Version 2 1 6 8 1 Go to Packet When the Go to Packet menu item is selected the following dialog box opens To move quickly to a view of a specific packet enter the packet number and select OK the display will be repositioned with the specified pac
20. ct and activate the Traffic Generator tool in a USB system environment It also explains how to install and run the CATC Traffic Generator software in your PC 1 1 USB Overview USB is an open industry standard providing a simple and inexpensive way to connect up to 127 devices to a single computer port Keyboards mice tablets digitizers scanners bar code readers modems printers and more can all run at the same time USB devices plug into any platform that supports the standard from notebooks to desktop PCs to workstations USB is a dynamically reconfigurable serial bus with an elementary data rate of 12 000 000 bits second based on off the shelf low cost micro controller technology Its modular layered software protocol supports sophisticated device drivers and application programs Please refer to the USB Specifications for details on the USB protocol The USB specifications are available from the USB Implementers Forum at USB IF M S JF2 51 Tel 1 503 264 0590 2111 NE 25th Avenue Fax 1 503 693 7975 Hillsboro OR 97124 Web _http www usb org 2 CATC TRAFFIC GENERATOR SYSTEM 2 1 General The CATC USB Traffic Generator tool has two major parts e a user programmable stand alone box to generate the USB traffic e a Windows application program to assist in creating the desired USB messages and downloading them to the generator box The CATC Traffic Generator box sends out a pre determined bit stream on the two USB wire
21. d Colors Save s Default Once the desired options are established by selecting the OK button they will remain valid until the Display Options function is used again The specified changes will be immediately visible in the displayed file 6 6 1 1 Field Formats The CATC Traffic Generator software supports several different formats in which the USB traffic data can be displayed When the Field Formats button is selected the following dialog Page 19 CATC CATC Traffic Generator User s Manual Version 2 1 box opens enabling a choice of viewing mode either binary or hexadecimal format for each of the special message fields Sync PID CRC etc In addition each field can be viewed with the most significant bit MSB positioned on its left or right side Field Formats x It is possible to revert back to the default setting at any time by selecting the Set to Defaults button After making the desired selections selecting the OK button will close this dialog box and return to the Display Options dialog box for additional selections Page 20 CATC CATC Traffic Generator User s Manual Version 2 1 6 6 1 2 Field Colors The Field Colors button allows customization of the color associated with each field in the message using the following dialog box Field Colors X Click on the desired field to change the color PID Type Data Special _ENDP Frame amp Packet aots ic i
22. e separately specified Sync PID Frame Addr Endp Data CRC etc The length of the idle time between packets can also be defined and individual bits in any packet changed Once a satisfactory data pattern has been created it can be downloaded to the Flash memory in the generator box 2 2 CATC Traffic Generator System Components The CATC Traffic Generator package includes the following components the USB Traffic Generator box an AC to DC converter 110V or 220V AC to 9V DC 500mA to provide power to the generator box a standard USB cable Page 3 CATC CATC Traffic Generator User s Manual Version 2 1 e amale to male DB25 25 pin cable to connect the Traffic Generator box to the PC parallel port e a binder with e a diskette containing the Traffic Generator software program e a warranty card e this user s manual 2 3 The USB Traffic Generator Box The USB Traffic Generator box has several user accessible controls on its front and back panels 2 3 1 Front Panel Description Ext PWR Cont Send Select PO P1 P2 P3 CLK USB OUT 00 0 0 0 EJ Single The front panel has one connector six LEDs and three switches e The four pin A type USB connector is marked USB OUT e The red PWR LED lights up when the box is powered by an external 9V DC power source e The PO P1 P2 and P3 green LEDs indicate which of the four memory pages is selected e The green Ext CLK LED indicates that
23. evice under test Note 1 CATC recommends the use of USB cables shorter than 2 meters 6 feet for all connections to the Traffic Generator system Note 2 To observe the bus traffic a CATC USB Bus amp Protocol Analyzer can be connected between the Traffic Generator tool and the device under test To control the generator from a PC connect the 25 pin cable between the USB Traffic Generator Parallel Port connector and the PC parallel port To generate traffic with clock signals other than those specified by the USB standard connect an external oscillator with TTL signal levels to the 50 Q impedance BNC connector Ext CLR A pull up resistor in the range of 150 240 Q should be included if driving the signal directly from TTL Note that the generator is designed to work with three different clock frequencies 1 5MHz used for standard low speed transmission 12 MHz used for standard full speed transmission and for low speed transmission with non standard bit widths and 48 MHz used for full speed transmission with non standard bit widths Support of external clock signals is intended to aid tests relating to clock signal jitter and PLL stability not widely differing operating frequencies Connect the DC plug of the AC to 9V DC 500mA converter to the 9V DC receptacle on the USB Traffic Generator back panel To activate the generator plug the AC to DC converter into a 110V or 220V power outlet The CATC Traffic
24. he Flash memory into one two or four partitions When it is set to one partition bit patterns can only be downloaded from one USB traffic file Conversely when it is configured to four partitions up to four different bit patterns with various traffic rates can be downloaded 6 6 2 3 Memory Partition Info Following selection of the desired partition option this section is updated to display the number of frames that can fit in each partition Note The terms partition and page are not used interchangeably Partition refers to the number of divisions in Flash memory Page always refers to a 32K byte block of the Flash memory Thus when the memory is configured as one partition it consists of all four memory pages This is reflected in the number of LEDs that light on the front panel upon making this selection Page 22 CATC CATC Traffic Generator User s Manual Version 2 1 6 7 The Generator Menu 6 7 1 Generator Download Configuration The generator download dialog box allows the selection of all or a selected range of packets to download to the Flash memory and the specific memory partition to be loaded The following screen view shows a situation in which two generator partitions have been specified Generator Download x Packet Selection All possible packets C Selected range only From Packet fo To Packet 33 Download to Memory Partition Select partition 8 Partiti
25. ket at the top Enter Packet Number X 6 9 The Window Menu The Window menu is a standard Windows function that allows the open windows to be viewed and arranged in different ways 6 10 The Help Menu The Help menu is a standard Windows function that supplies additional information on the various functions of the Generator program when it is in use 6 11 The Quick Edit Pop Up Menu Clicking on the Packet title of any packet display will bring up the following Quick Edit menu allowing for a short cut way of initiating Add Delete Modify and Copy operations by not having to specify the source packet number Guick Edit Options Add new packet after packet 3 Delete packet 3 Modify packet 3 Copy Packets 6 12 The Data Field Pop Up Menu Clicking on the DATA title of any data field will bring up the following single item menu selecting it will compute and display the number of bytes in the associated data field Data Field What s the length Page 25 CATC CATC Traffic Generator User s Manual Version 2 1 7 HOW TO CONTACT CATC Type of Service Contact Call for technical support US and Canada 1 800 909 2282 Worldwide 1 408 727 6600 Fax your questions Worldwide 1 408 727 6622 Write a letter Computer Access Technology Corp Customer Support 2403 Walsh Avenue Santa Clara CA 95051 1302 Send e mail support catc com Visit CATC s
26. number reordering The Traffic Generator software does not attempt to monitor this activity which in fact may well be a valid component of a testing sequence 6 5 1 8 Bit Stuffing Control Bit stuffing is normally performed as defined by the USB standard but can also be disabled for DATA fields only by marking the Disable bit stuffing check box When this is done the presence of a bit stuffing error caused by six or more consecutive one bits will be indicated by the inclusion of an exclamation mark in the data field value displayed in the main display window Any subsequent bit stuffing errors in the packet are not marked as their presence is not adequately defined and no such errors are marked in free format packets 6 5 1 9 CRC Calculation The default operation of the generator software is to automatically compute the correct 5 or 16 bit CRC for any packet being constructed This service can be disabled by clearing the Auto calculate CRC check box allowing the CRC value to be manually entered CRC values are not calculated for free format packets as a CRC field is not defined the user must insert them manually if required 6 5 1 10 Bit Width Modification The specified width of each individual bit in any active packet field except for DATA fields can independently be set to 100 the normal default value 75 or 50 width using the following dialog box Page 16 CATC CATC Traffic Gene
27. on 0 O Partition 42 Partition 1 Partition 3 J Enable non standard bit widths Status Messages Processing ee of frames 43 frames Maximum If the current USB traffic file contains bits that have been defined to have non standard widths via the Bit Width option in the Add or Modify Packet functions the Enable non standard bit widths check box will be enabled A mark in this box will preserve the non standard widths as they are loaded into the generator box clearing the box will load only standard 100 width bits into the generator box though the computer resident file will not be modified Page 23 CATC CATC Traffic Generator User s Manual Version 2 1 6 7 2 Generator Playback Configuration The generator playback dialog box enables operation of the generator from the screen The Start and Stop buttons perform the same functions as the Send button on the generator front panel Generator Playback Ed Playback Mode C Continuous Transmission Single Burst Partition to Play Back Partition 0 C Partition 1 Partition 2 Clock Source Partition 3 TF Ext Clock 6 7 2 1 Playback Mode Two options are presented in the Playback Mode group box Continuous Transmission and Single Burst This option mimics the Cont Single toggle switch on the front panel The selection of the continuous transmission option places the hardware in continuous play
28. p for the Generator application once it has finished copying all the files The icon for an Uninstall program is also placed in the program group This Uninstall program can be run later if desired to remove the Traffic Generator software from the system To run the software double click on the Traffic Generator icon in the program group created during installation Section 6 describes the software in detail Note The CTL3D DLL and the CTL3DV2 DLL 3D control libraries may already be installed on your system In this case there is no need to overwrite the existing files The CATC Traffic Generator software is now ready for operation 5 2 Running The Software The CATC Traffic Generator software is a Windows application and can be run under Windows 3 1 Windows 95 and Windows NT To start the program when using Windows 3 1 from the Program Manager select the File Run option and then use the Browse button to locate the USBTGEN EXE file in the CAUSBTGEN directory or the directory specified during installation Optionally double click on the CATC Traffic Generator icon created during the software installation The program will start with the main window active Page 8 CATC CATC Traffic Generator User s Manual Version 2 1 6 THE CATC TRAFFIC GENERATOR SOFTWARE 6 1 Getting Started The CATC Traffic Generator software is a PC based Windows application program that allows the operator to create desired traffic
29. racters maximum added to top of printouts The specified traffic information will be printed as currently displayed in color or grayscale as supported by the destination printer Any supplied comment up to 60 characters in length will be printed following the current document name at the top of each page 6 4 10 Exit Terminate the CATC Traffic Generator Windows application 6 5 The Edit Menu The CATC Traffic Generator software provides several options for editing and modifying the USB traffic The Edit menu includes functions to add delete modify and copy packets plus the ability to reorder frame numbers Each of these functions can also be activated by a special icon Page 13 CATC CATC Traffic Generator User s Manual Version 2 1 6 5 1 Add When the Add menu item is selected the following dialog box opens allowing insertion of a new packet Add Packet Ed Total number of packets 28 Add following Packet When the Add button is selected after specifying the new packet s location the following dialog box opens enabling definition of the various fields of the new packet PID Type Packet Fields C SOF SETUP STALL pre Idle jo bits Max idle 11965 CIN C DATAO C ACK Sync 00000001 C OUT C DATA1 C NAK PID 10110100 C Free Format Frame Static Bus Events ADDR 0000000 C RESET RESUME ENDP 0000 Preamble DATA hex l Issue Preamble CRC or 000
30. rator User s Manual Version 2 1 Specify Bit Width le Oj Oj Oj a e 0 gt 0 eo p 000000 Whether or not such bits are transmitted as so defined or as normal 100 width is further determined when the file is downloaded to the generator box 6 5 2 Delete When the Delete menu item is selected the following dialog box opens allowing deletion of one or a range of packets Delete Packet s x Pl po 6 5 3 Modify When the Modify menu item is selected the following dialog box opens allowing selection of a specific packet for editing Page 17 CATC CATC Traffic Generator User s Manual Version 2 1 Modify Packet X Total number of packets 28 Enter Packet ii When the packet number selection is confirmed a dialog box almost identical to that used by Add Packet though initialized to display the current data opens enabling modification of the various fields of the chosen packet 6 5 4 Copy When the Copy menu item is selected the following dialog box opens allowing the copying of one or a range of packets to a position following the indicated packet position Copy Packet s ES Total number of packets 28 Copy Packet 1H Through Packet Place after Packet 6 5 5 Reorder Frame Numbers Inserting and deleting packets can interfere with the sequential ordering of packet frame number When
31. s D and D of the USB connector This bit stream is written by the generator software into non volatile Flash memory devices in the generator box By separately controlling each individual bit on the D and D lines the generator can send the raw differential USB data as well as the static bus conditions J K and SEO The CATC Traffic Generator box can work as a stand alone box or under software control when attached to the PC parallel port The generator has several operation modes selected by activating the front panel switches or by software control See section 2 3 for details The CATC Traffic Generator software is a PC based Windows application program that enables creation of desired USB traffic bit streams for the generator The program can also display data files previously recorded by CATC s USB Bus amp Protocol Analyzers Any packets can be selected from this file and modified bit by bit Packets can also be deleted added and copied pasted Page 2 CATC CATC Traffic Generator User s Manual Version 2 1 s CATC USB Traffic Generator DEYDESC GEN CATC Default View Pla E3 y Eile Edit Setup Generator Search Window Help laj x leelo 2 Ga iia a a z i ADDR CRCS ooo00001 oxae oxor oxo ox7 001 176 Ea y ooo00001 oxas oxose oxra 001 IN ADDR rs ne im y oo000001 osas oxos oxos oot 4 gt Bus Speed Full Each field in every USB packet can b
32. s 5 2 3 3 Memory Partition Selectionner E a cach ote E E E A O ae Ea ge ee gt DIO Clock Source SELECIONAR OR Boe 5 LIA Trigger Na A A AA A A E ghee Rageous 5 DBS TIS Ber OU AE A A 5 3 MEMORY ORGANIZATION csscscssscsvsnsssssnessvessansscstessostcncsvcnsssednessonsecstsesntesesssnssoushesvondsecesssensssceccuescetneteondedsteesss 6 A SYSTEM SE TU Piti otrora dano pasato EOE Ao EEO OEE EAO DEEE ES aAa SES Tsoi asia 7 5 SOFTWARE INSTALLATION WIN 3 1 WIN 95 WIN NT ococococonccconoccnococnoconocconaccnonocnnccconcnnoconnccnnoconaccnos 7 StL GENERAL cta it a a a A tandas 7 3 2 RUNNING THE SLO DA DATAN ed SAE E E E E E E E eM ec tees 8 6 THE CATC TRAFFIC GENERATOR SOFTWARE esseessesccescesccesccescosccesecssecscceceeeoeccoeccosecesccesecesesseceseeesessese 9 6 1 GETTING STARTED ii 9 0 2 THE MAIN DISPLAY M NDO sche th eth nA AI eA ia eA ee 10 6 3 THE STATUS BAR ci 11 CATE SPIVE MENU chee e ae heed es hte thea eds 11 AAA NO 11 6 4 2 Opiate aaa 12 6 4 3 A O NN 12 NA EEEE E EE E E E O E EE EA 12 ORIO AS A EE E E 12 OO SAVCAS TOCAR EEEE E A A EE S E 12 6 47 Edit COMIMENE anrcsin A E E TEA eTa AAEE E a A E E E AR 13 0 4 8 aa TAANA EE E E A oa ie 13 AA NO 13 OLLIOENA A rana aha 13 6 5 THE EDIT MENU er dn bh lee diated edn aetna eas acted tenn ee anodes nin eek nee piace 13 Os A res casted hee e e IA EAS cathe E sesehs 14 6 53 11 Data Field EditIMS visionado 6312 RID Selecion titan 6 5 1 3 Static Bus Event Selection 6 5 1 4 Pre
33. sed a second time 2 3 5 Memory Partition Selection The Select push button is used to select the active memory partition Pressing the Select button for less than one second will change the active Flash memory partition The PO P1 P2 and P3 green LEDs on the front panel indicate which of the four memory pages is selected Each time the Select button is pressed the next memory page or set of pages becomes active 2 3 6 Clock Source Selection The Select push button is also used to select the clock source Pressing and holding it for more than two seconds will change the active clock source from the default internal clock to the external clock repeating the action will change 1t back The green Ext CLK LED on the front panel illuminates when the external clock is selected 2 3 7 Trigger In The Trigger IN BNC connector allows activation of the Traffic Generator tool electronically via external circuitry to start the transmission of the USB data packets A TTL level negative going pulse on the Trigger IN input has the same effect as physically pushing the Send button on the front panel The Trigger delay from the trigger falling edge to the start of transmission is 100 150 us 2 3 8 Trigger Out The Trigger OUT BNC connector can be used to synchronize external circuitry to the Traffic Generator system The Trigger OUT signal is a negative going TTL signal The signal goes low when
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