Logic & Logic16 User's Guide Contents
Contents
1. nsosseossnsssesessenesensserrssrrssressrrrrssrresresreresereserrese 15 Chaneinge TNE LOPICIOCHAMNG S ereraa a N a aA 16 Crosstalk and Logic16 input voltage selection esssesessssseessssrrrssrrersssrressreressrrersseereserressrereseerersseeee 17 Saleae COMMUNITY Stea E E E A us Gceuaetuniemeanseoates 19 SDKs Device SDK and Analyzer SDKs reimana E E E eh 19 FOUN aeren aa E E T cede tet hed cet eiracte ot 19 Beson erele T eS eaa aun auedancibuesanns casaty faut on aamounenaumioetuncancanpetts 19 Dai STUY ee E A E E E cearanct mentale E tase A aa ealaryease tween aca 20 Maxmo oamp e IR AN oases racers ant ashes Sc a i ca cre a a aerate near eee Re it a taint 20 Maximum sample rate and long Captures LOGIC16 0 0 cece cesccccessecceececeececeeceeeecesaescessuecesseness 21 Safety anad Egui ment Protec UON an E A S 22 CONAC E US a E N vue cram E O E N TENT T E A eumec eae 23 2 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Installing the Software Installation on Windows amp Mac Download the latest version from our site here http www saleae com downloads Double click amp install like any other application Note Windows XP Users Please download the 32 bit version of the software Note Vista amp Windows 7 Users Please download the either 32 bit or 64 bit installation depending on your version of Windows You can find out by right clicking Computer in the start menu and choosing Properties2. Export data Save Screenshot Save Screen Region Display in Ascii Connected devices Locicl6 channels Use channels 0 1 LOOMHz max Logicl6 input voltages Use channels 0 3 S0MHz max et eno Use channels 0 7 245MHz max This ts the latest version 1 1 7 v Use channels 0 15 12 5MHz max Users Guide Select custom channels Give feedback report issue Crosstalk and Logic16 input voltage selection Logic16 has two voltage settings one for 1 8V to 3 6V and another for 3 6V to 5V Connected devices Locicl6 channels Logicl6 input voltages ri Y 18V to 2 6V Preferences 3 6V to 5 0V This is the latest version 1 1 7 User s Guide Give feedback report issue The lower voltage settings should work in most circumstances The 5V setting is provided to reduce the likelihood of channel to channel crosstalk when using 5V signals Crosstalk is developed at least in part by Logic16 s long lead wires fast rise fall times and is greatest when using 5V signals Logic16 s front end filters noise like this but only up to a point You should be able to have 8 different signals simultaneously switch without seeing crosstalk on adjacent signals 17 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 If you experience crosstalk be sure both ground wires are connected to your circuit as this can make a dramatic difference Unconnected floating inputs are much more susceptible to
3. At this time there are no cost effective isolation products for 480Mbit USB High Speed USB that we are aware of There are fiber optic based solutions that cost around 1000 22 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Contacting Us You re always welcome to contact us about anything support saleae com is typically the best way to reach us or online at http www saleae com contact We re more than happy to discuss any issue or questions you have via phone too The most reliable time to reach us is in the afternoons and early evening Pacific time If you miss us please do leave a message and we ll call you back 510 984 2463 23 Copyright 2012 Saleae LLC All Rights Reserved
4. System Rating 55 Windows Experience Index Processor Intel R Core TM i7 CPU 860 27 80GHz 2 93 GHz Installed memory RAM 2 00 GB System type 64 bit Operating System Pen and Touch No Pen or Touch Input is available for this Display OS X Tiger Users The application needs to be unzipped before it can be installed Installation on Linux 1 Download the latest version from our site here here http www saleae com downloads 2 There is no installer you can unzip the application anywhere you like perhaps your home folder or your desktop You can start using it on your desktop and move it later if you like 3 Double click the Logic executable to start the program If you like make a link to the Logic application for your desktop or application menu or dock 5 Note that wherever you decide to put the logic application it must all stay together in the same folder structure and it must have write permissions 6 When connecting to Logic you may get a message from the application that it doesn t have permissions to connect to Logic If this happens run the install _driver script in the application s Driver folder 32 bit vs 64 bit Please choose the version appropriate for your Linux Distribution 64 bit Users Please note that as of 1 1 5 you won t be able to load sessions saved with other versions platform distributions of the Logic software However other Logic software distributions will be able to load sessions tha
5. When you save your session Options gt Save Session gt settings amp data you are only saving the session associated with the currently active tab There isn t a way yet to save all your tabs at the same time or to save them all to a single file a session set We will be adding this capability in the future Switching between multiple Saleae logic analyzers While there isn t a way to collect from multiple Saleae logic analyzers at the same time you can have more than one connected to your computer which can be helpful in some circumstances lf more than one logic analyzer is connected the menu item Connected Devices item will appear in the Options menu 15 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Open Session Ctrl O Save Session Export data Ctrl E Save Screenshot Save Screen Region Display in Ascii Connected devices t Demo Logic Preferences Demo Logic 16 This ts the latest version 1 1 7 User s Guide Give feedback report issue Changing the Logic16 channels With Logic16 you can select which channels to use and if you need fewer channels you can sample at higher speeds This setting is in the Options menu under Logic16 channels You can select from one of the standard options or be more specific by choosing Select custom channels 16 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Open Session Ctri 0 Save Session
6. crosstalk You may want to turn off or hide unused signals This applies to both Logic and Logic16 18 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Saleae Community Site SDKs Device SDK and Analyzer SDK We have cross platform c based SDKs for getting access to Logic or Logic16 at a low level and for making your own protocol analyzer plugins You can get access to this SDK at our community site at saleae com community Forum To share ideas or issues and to connect with other users head over to the forum in the community site at saleae com community Beta software releases We occasionally have new software releases which we think are pretty good but don t want to risk disrupting a large number of users if something in it needs fixing Typically these releases turn out to be pretty stable and have additional features and fixes that the current release doesn t have If there are any beta releases they ll be on the community site 19 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Data Integrity Logic and Logic16 may not be able to achieve a particular sample rate see the next sections but it will never present data with samples missing By design it stops and notifies you as soon as any data is lost Maximum Sample Rate Generally speaking Logic is able to achieve sample rates of 24MHz when no other devices are on the USB host and your computer is respondi
7. Saleae User Guide 1 1 15 Logic amp Logic16 User s Guide Hello and thanks for using Logic We hope this guide will answer any questions you might have but if not please do let us know at support saleae com Warning Using Logic or Logic16 to test equipment powered by AC MAINs power can be hazardous to equipment Battery powered wall wart powered and USB powered equipment is generally safe For anything else please make sure to read the section Safety and Equipment Protection Happy Debugging Contents Logic amp Logici User s GUIG Cc scscainsccsscencatalcnssanuisaivanesersindendennasaveavatuavcanedeasenaandaeunaveseanandunseaataadeawaveasataebuasenates 1 Metalne WS OT O eE E EE E E E E 3 Installation on Windows amp MaC cccccccssssscccccccsesseccceesseeeeeesaeeeeceeeseeeeeeeeeseeeseecceesaeeeceeesauasecesessagaeeess 3 WS AUNT OUT Eh T EA E N E E E A EN E 3 Oane ime Ra OW I e ncesce since pec stele ys det aee den se panouee ee dase dereueeeence 4 Connecting the wire NAN NCSS cscs sdccacsccssiatesannseesandeaendeanaideendanseantveatnaaeesibedawacds bandoasndnapadtaantuadsousunadaunnenrtes 4 NOR IC Vo NV IES VAN We SSS sects AEREA PEA ANO EAE AAE A N EEA A EA 4 Teat DE oe A E E E E EEE 4 CONNECTING directly to IDE CAG ONS ice ceaceuai eee tarsccusane rire iane a hN n LNE 4 Disconnect Logic from your circuit when the USB is unplugged sssssssessseressrrnsesreresrresererressrressseene 4 Safety and Equipment Protection
8. ae User Guide 1 1 15 Safety and Equipment Protection The primary concern for safety and equipment protection is the ground return path Logic s and Logic16 s ground input is essentially shorted to the ground of your computer and your computer s ground is likely connected to earth ground Therefore Logic s ground line has the potential to provide a high current ground return path to a device under test This can result in the destruction of Logic the USB host and in the worst case the computer e Logic should not be used with DUTs devices under test which are not electrically isolated from MAINS i e wall power There is one exception outlined below but it comes with important caveats and must be fully understood Please contact us if you have any concerns O If you need to test a MAINs connected DUT one possible solution is to use a Laptop running on battery power and not connected to anything else such as a likely grounded LCD monitor This will prevent Logic from providing a short circuit ground return path HOWEVER this setup introduces an additional and very serious safety concern The reason for the MAINs earth ground connection in the first place it to prevent a high voltage from connecting to a chassis which could cause electric shock to a user A grounded chassis if connected to a large voltage will provide a short circuit which then blows a circuit breaker or fuse and removes the high voltage prot
9. ake sure you have enough free RAM so that the OS will not have swap ram to the hard drive This will be too slow e Try connecting Logic directly to your computer instead of through a USB hub e Make sure other devices on the USB are minimally active i e not webcams hard drives etc e Try disconnecting other peripherals from the USB or switching Logic to a port serviced by a different host controller You may even want to try a dedicated host controller such as this one http www newegg com Product Product aspx Item N82E16815166014 e Increase the process priority of the Logic software o Windows From the Windows Task Manager select the Processes tab and find the Logic process Right click on this item and select Set Priority gt High o Linux From the command line navigate to the folder where the Logic executable is Type nice n 3 Logic Search for Linux nice on Google for more information 20 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Maximum sample rate and long captures Logic16 Logic16 has a significantly larger hardware side buffer than Logic and therefore is much more immune to latencies in the USB It is also more likely than Logic to reliably operate at its maximum speed on a given computer If you need to capture for long periods of time especially to catch overnight errors in the act we recommend using Logic16 21 Copyright 2012 Saleae LLC All Rights Reserved Sale
10. amples that are different than prior samples Note that if you export only changes in the data a 64 bit sample number is written before each sample in the file If you aren t exporting all of the channels you can choose to leave the bits in their original channel locations or to have them shifted right to fill any unused positions Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 o You can choose to export each sample as an 8 16 32 or 64 bit word e Export Format VCD Export Format Ved o VCD stands for Value Change Dump and is a common format for digital data e Export Format CSV Export Format Cs CSV Settings Include column headings Comma delimited Use timestamps s Output one column for every bit Output one row per change Choose this format to export data as comma or tab delimited human readable text You can optionally include column headings for the data You can use sample number i e 1 2 3 4 or timestamps i e 00123s to specify the time a sample represents This occupies the first column o You can combine all the channels into a single number or you can export each bit in its own column o You can export every sample or only samples that have changed Saving Screenshots e You can take a screenshot of all or part of the application and either save it to a file or copy it to the clipboard You can find this in the Options menu or use the keyboar
11. cccccccssscccccessecccceseccceesccccceusececeeeceeceescceessuecesseneceeseneceeeseeeeetas 4 Jemne Ne SOn O a A A T 6 T eE E E 6 Uone VS WES a T EEEE S TE E E E EEE 6 Navigating the data display ae nem a i A A EN eee na ES 6 1 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 HNS Measurement ein a ca teusewiosienrautebas seus ec eeeiaenweseatane 7 Pacme Tne IVI AK ONS chaste cane deuc EEIE snes tineneace guadtcin tates Suede wuneedb plasmas veed ue OANA 8 SAVING ANC ODCMINE a SCSSIOM aa seers tenia ete acest A 8 EO WEIN Dala isoa tants danteutodace wate ontaalssaca salsa accsea conn acti ucactunsonceeveyen Seles Sagia da deanu cue oneneuasoensvaconertme tacos 8 SAVING Screenshots sareen cease sha eesuis Gh cad SIG octal ensue ead Gs gain ade A ieialen alu sll G haled uo as 10 Selecting the Display Radix i e Hex Decimal etc ccccccsecccccsseccceeseccceeeseceeseenecessueeceeeeesecessuaneces 10 WISIN Protocol AMA ZENS carnai remesial apemeusnnecaured enue nee T 11 Hiding un hiding and reordering channels cccssscccsssecccsecccesccccscccasececeeceeeneceeeecesaeseceseueceneness 12 Resetting the trigger channel names channel ordering and channel visibility 12 Hiding the channel labels and or trigger ccsssesssseesseceeccccccccceeeeeeeeeeeeueeeeesseeeeeeeceeeeeessseeueeeeaeaeees 13 Working With EADS rererere keir ren EOE raia EAE E a TEE 13 Switching between multiple Saleae logic analyzers
12. d shortcuts To File Ctrl I To Clipboard Ctrl Shift I Save Screenshot I Save Screen Region d Selecting the Display Radix i e Hex Decimal etc e Use this Options menu item or the keyboard shortcuts to quickly toggle between the different display modes 10 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Open Session Ctrl 0 Save Session Export Data Save Screenshot Save Screen Region Display in Hexadecimal Binary Ctrl B Preferences Decimal Ctrl D This is the latest version 1 1 5 da ae ASCII Ctrl A Asc amp Hex Ctrl Shitt 4 User s Guide Give Feedback Report Issue Using Protocol Analyzers 11 To add a protocol analyzer select one from the menu in the Analyzers panel Y Analyzers i CAN Pt DS PCM 1 Wire Asyne Serial SPI UNIO Protocol analyzers can share inputs with other analyzers This can be useful in some cases such as SPI After you add or edit an analyzer it immediate runs against any data you have collected To export data from an analyzer press the small file icon next to it Center button Export as text csv file If you need to change the display format radix of a particular analyzer you can do this from the Analyzer settings menu Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Y Analyzers CAN Edit Analyzer Display using Global Settings Global Settings Binar
13. during the selected three successive signal transitions e Byte The numerical representation of all 8 channels combined into one byte at the specified location e T1 The absolute time specified by the location of the T1 timing marker e 72 The absolute time specified by the location of the T2 timing marker e 171 72 The time elapsed between the timing markers e To show or hide particular measurements use the settings button 3 mE Measurements Show Width Width gt ae Show Period Period Frequency 4 Show Duty Cycle Ti T7 0000000 us fen Fs 0 164000000 ms T1 T2 87 00 us Show Byte Show Frequency Show Timing Markers Y Analyzers Y Show Error 7 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Placing Timing Markers Single click the T1 or T2 label or use 1 and 2 keys on your keyboard Move your mouse to the desired location Note that you can still pan and zoom Single click to place the marker Your mouse must not be moving when you place the marker To move the marker after it has been placed click it To cancel placing a marker right click or press the escape key Saving and Opening a Session To save a session that includes data press CTRL S CMD S on a Mac or select this function from To save a session that contains only settings press CTRL SHIFT S CMD SHIFT S on a Mac or To open a session of any type drag it into the software or pres
14. ecting a user from potential electrocution If you use the workaround presented here you must ensure that it is impossible for any high voltage to be connected to any of Logic s inputs and especially Logic s ground lead Low voltages as measured relative to earth ground which would not present a risk of electric shock are permissible Isolation transformers such as those made by Tripp lite These transformers provide a large 1 1 transformer so that that the hot AC power lines are electrically isolated from MAINS However and crucially they DO NOT isolate the MAINs earth ground connection and so are not useful for providing a solution to this issue e DUTs which are battery powered or USB powered from the same computer as Logic are acceptable O When using USB powered DUTs special care should be taken to avoid connecting USB sourced power to Logic s ground as this provides a short circuit return path e DUTs powered by AC adapters which have only 2 prongs and do not have an earth ground connection such as most wall warts usually provide MAINS isolated power and are generally acceptable They also are less likely to be able to source enough current to cause serious destruction We highly recommending testing for good isolation O If in any doubt as to if Logic s ground and or the ground of your DUT is isolated from MAINs earth ground use a Multimeter to measure the resistance to earth ground
15. es and switch between them The Capture Tab The most important thing to know is that you can only capture new data from the Capture tab which is the small tab with the magnifying glass logo 13 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 15 Channel 15 Adding new tabs After you collect data the Capture Tab will change adding a button to one side Click this button to move your new data into its own tab Renaming a tab Click tab s text to edit it Note that a tab must be active before it can be edited 15 Channel 15 Reordering tabs You can reorder tabs however you like by dragging them 14 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Closing Tabs You can close tabs by using its menu This can t be undone so be sure to save your session if you need to before closing the tab Copying settings between tabs Occasionally you may make changes on one tab you may wish to propagate to another tab From the tab s menu choose Copy For instance if you set up some analyzers in one tab and you wanted to run them against data ina different tab you could copy them Note that this will replace any analyzers that were already in that tab 15 Channell5 Pate my data set 1 v my dataset 2 Measurement settings Analyzers replace to Capture Tab Channel settings to tab my data set 2 All settings Tabs and saving your data
16. ng sufficiently quickly However if the USB is servicing other devices or the computer is performing in a latent manner a smaller sample rate such as 16MHz or 12MHz may be the fastest achievable The reason for this is as follows Logic uses USB 2 0 and uses the USB transfer type known as Bulk While this transfer type has the largest theoretical average bandwidth significantly larger even than the 24 MB s needed by Logic it also has the lowest priority This means it may be bumped for other USB traffic from other devices The second issue is that Logic has very limited device side memory Specifically it has x4 512 byte buffers These buffers must be emptied by the USB in such a way that they never all become full at the same time If this happens the logic software will report that the sample rate could not be maintained This means that even if on average which would normally be the case the USB can give Logic at least 24 MB s it must not prioritize other devices on the USB for so much time that Logic s small buffer would overflow For this reason Logic can t guarantee that it will operate at its maximum 24MHz as this is contingent on a number of factors including computer performance USB bandwidth availability and latency other drivers that may be using the USB etc To maximize the sample rate possible on your computer try the following e Make sure that no other applications are consuming significant CPU time e M
17. re trigger data will be collected for the region of time before the trigger is found to the extent the trigger is not immediately found You can configure this amount under Options gt Preferences Pre trigger buffer size 10M samples default e The time where the trigger is found is time zero in the display 0 Channel 0 1 Channel 2 Channel 2 Navigating the data display e Click and drag the display to move it 6 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 e Use the scroll wheel on your mouse to zoom in and out e Alternatively use the arrow keys to zoom and pan The keys also zoom e To jump to next move your mouse to and click the button that will appear near at the ends of the graphs You can use the keys N next and P previous as well this applies to the channel that was last used by the mouse Measurements Jump to next edge M Period it Timing Measurements e Tip Move your mouse over each measurement label for a description The time elapsed between the selected three successive signal transitions e Width The time between the selected two successive signal transitions e Period The time elapsed between the selected three successive signal transitions e Frequency The frequency computed by dividing one 1 by the time elapsed between the selected three successive signal transitions e Duty Cycle The of time the signal is high 1
18. s CTRL O CMD O on a Mac or the Options menu select this function from the Options menu select this function from the Options menu Settings Ctrl Shitt S Settings amp Data Ctri Width 2 Period rrr Frequency 4 H 77 0000000 us T2 0164000000 n Tl T2 87 00 ps Y Analyzers Exporting Data To export data select Options gt Export Data CTRL E Open Session Ctrl 0 Save Session Export Data Ctrl E Save Screenshot Save Screen Region Display in Hexadecimal Preferences This is the latest version 1 1 5 User s Guide Giwe Feedback Report Issue Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Channels to Export Export all channels Samples to Export Export Format Cay CSV Settings Include column headings Comma delimited Use timestamps s Output one column for every bit Output one row per change e Channels to Export Select which channels you would like to export e Samples to Export Select the time period over which you would like to export samples o Tip If you are using timing markers you can export just the data between them This option will only appear in the list if two timing markers have already been placed e Export Format Binary O Export Format Binary Settings Output data for each sample Output each sample in 8 bit byte You can select if you want data outputted for every sample or only for s
19. sconnect Logic from your circuit when it is not connected to your computer If Logic is not powered by the USB it can put a load on your circuit that can compromise signal integrity Safety and Equipment Protection In general Logic and Logic16 may not be used with DUTs devices under test which are not electrically isolated from MAINs wall power This is because the logic analyzer shares a common ground with your computer which typically is grounded with respect to MAINs earth ground This creates a potential 4 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 short circuit path for any non isolated MAINs derived voltages via the logic analyzer s ground input s For more details please refer to the section on Safety and Equipment Protection near the end of this User s Guide 5 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Using the Software Quick Tips e Almost everything has tooltips that offer some explanation of what it does e Most functions have keyboard shortcuts described in their menu item or their tool tip Using the Trigger e Tip mouse over the trigger buttons for a description e The trigger looks for a single edge To use the trigger there must be one edge specified 0 Channel 0 e You can also specify that other inputs must be in particular states high or low when the edge occurs 0 Channelo TSE 1 Channel1 PATEN 2 Channel 2 e P
20. t you save Sorry for the trouble we ll get this fixed 3 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 Using the Hardware Connecting the wire harness To determine the correct way of attaching the wire harness look on the back of your device for the ground symbol Then find the gray wire on the wire harness This is the ground wire It will have a GROUND label near RS coun a Logic16 Wire harnesses its end Logic16 uses two 9 wire harnesses On the bottom of the device these are labeled A and B Ais channels 0 7 and B is channels 8 15 Note that you don t need to have both harnesses plugged in if you re only using the first 8 channels Test Clips You can connect your test leads from the wire harness to the provided test clips They might require quite a bit of force before they click Connecting directly to IDE headers In some situations you will be able to plug the test leads directly into IDE headers on your PCB which can be very convenient For new PCB designs we recommend including headers for things you might need to look at during firmware development You only need to solder in the headers if you have an issue and they can be removed in the final PCB revisions if needed These will serve as nice test points for an oscilloscope as well Don t forget to wire in some ground pins as well Disconnect Logic from your circuit when the USB is unplugged You should di
21. y Decimal Hexadecimal scil Asci amp Hex Hiding un hiding and reordering channels You can hide channels you aren t using Note that this is different than turning off channels which you can do with Logic16 to increase sampling speed Move your mouse over the channel label area of the screen drop down menu button will appear You can Hide channels Show un hide them and Move reorder them 0 ChannelQ gt FHE Se gi lade this channel Show all channels above me 2 Channel 2 Move all channels below me Reset 3 Channel 3 Options 4 Channel 4 Resetting the trigger channel names channel ordering and channel visibility Sometimes you may want to start from a fresh slate and you don t want to do this one item at a time Use the Reset option to do this 12 Copyright 2012 Saleae LLC All Rights Reserved Saleae User Guide 1 1 15 0 Channel 0 a aa Hide Show Channel Move i Channell i _ Reset m e 3 Channel 3 Options channel names channel ordering Meee channel visibility 5 Channel 5 oa ee trigger Hiding the channel labels and or trigger To clear up additional screen space you can optionally hide both the channel label and or the trigger Find this under the Options menu item Hide Show Move Reset Options Show Trigger Show Channel Label Working with tabs Tabs let you save multiple captur
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