HOLT HI?1590 User manual

AN‐1590,Rev.NewHOLTINTEGRATEDCIRCUITS10/10/14

23351 Madero,
Mission Viejo, CA
92691. USA.
Tel: + 1 949 859 8800
Fax: + 1 949 859 9643
Email: [email protected]
Web: www.holtic.com
HI‐15901553BDualTransceiver
WithSPIAmplitudeControl
EvaluationBoard
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UserGuide
October,2014
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AN‐1590,Rev.NewHOLTINTEGRATEDCIRCUITS10/10/14
INTRODUCTION
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TheHoltHI‐1590EvaluationBoarddemonstratesfeaturesoftheHI‐1590MIL‐STD‐1553Bdual
transceiverIC.ThisdevicetransmitsandreceivesManchesterencoded20bitMIL‐STD‐1553B
serialdatasuitablebustransformers.Transceiverdriveamplitudecanbedigitallyadjustedfrom
0to26Vp‐pthroughtheSPIinterface.Adjustmentcanalsobemadewitha0to3.3VDCanalog
controlsignal;apotentiometerisprovidedforthis.Amplitudecontrolsforbothbusesare
gangedtogether.InSPImode,alowrangeoptionallowsformoreaccurateamplitude
adjustmentfrom0to4.9Vp‐p.Theboardrunsfromasingle3.3V±5%supplyvoltage.AMIL‐
STD‐1553Bprotocolmessagegeneratorandreceiverareincludedontheboardtodemonstrate
theHI‐1590features.TheEVM(EvaluationModule)includesamicrocontrollerthatgenerates
theSPImessages,theinterfaceisthroughaterminalemulatorconnectedtoaPCthroughthe
USBinterface.TheEVMisshowninthepicturebelow:
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Fig1–HI‐1590EvaluationBoard

AN‐1590,Rev.NewHOLTINTEGRATEDCIRCUITS10/10/14
Thisguidesummarizeshowtosetupandrunningquickly.
KITCONTENTS
ThisUserGuide
HI‐1590EvaluationBoard
MiniUSBSerialCable.
BoardBlockDiagram
MC9S12XD
16 Bit MCU USB
DIP SW
(4) DIP SW(6)
RESET Button
3.3V
Supply
RESET Transceiver A DB2791
TRANSFORMER
HI-1590
BUSA
Transceiver B DB2791
TRANSFORMER BUSB
Message A
1553B
Message
Generator
Message B
RUN
EEPROM
1EEPROM 2
BC RT DIP SW
(5)
ANALOG CONTROL
VCONT
ACTIVE
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AN‐1590,Rev.NewHOLTINTEGRATEDCIRCUITS10/10/14
LEDFunctions
REFNAMEDEFAULT DESCRIPTION
LED1POWERONIndicatedwhen3.3Vpowerispresent
LED2ACTIVEOFFFlashesatthestartofa1553messagetransmitsequence
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LinkJumperFunctions
REFNAMEDEFAULT DESCRIPTION
J4LINKFORPOTOFFLinktousepotentiometerR3toadjustoutputamplitude
J5LINKFORSPIONLinktouseSPItoadjustoutputamplitude
J8HOLDINRESETOFFHoldsthemicrocontrollerinreset,forinstancewhileusingan
externalSPIinterface.
J12BC/RTBCConnectsmemoryforBCorRTmessages
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WiredJumperFunctions(JP)
REFNAMEDEFAULT DESCRIPTION
JP1ONLinktouseon‐board70ΩloadonBusBoutput
JP8ONLinktouseon‐board70ΩloadonBusAoutput
JP2,3,4,5JP4,5ONOptionlinksfortransformervariants,BusB
JP6,7,9,10JP6,9ONOptionlinksfortransformervariants,BusA
JP11ONConnectsBusAnegativeoutputtoground
JP12ONConnectsBusBnegativeoutputtoground
JP13‐16ONCutifusinganexternal1553messagegenerator
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AN‐1590,Rev.NewHOLTINTEGRATEDCIRCUITS10/10/14
SwitchFunctions
REFNAMEDEFAULT DESCRIPTION
SW1/1
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VSELONSelectsoutputcontrolofamplituderange,usingSPI.
ON=SPIcontrol0‐24V,Low=SPI,0‐2.4V
SW1/2TXAINHOFFInhibitsthetransmitteroutputoftransceiverA
SW1/3TXBINHOFFInhibitsthetransmitteroutputoftransceiverB
SW1/4RXAENONEnablesthereceiveroftransceiverA
SW1/5RXBENONEnablesthereceiveroftransceiverB
SW3RUNPress=Starts1553messages
SW4STOPPress=Stops1553messages
SW5/1‐5AUTOENetc01101Messageloadingcontrol(leaveindefault)
SW6/1‐6RT1A4:0,RT1AP000000RTAddress(onlyusedifRTmodeavailable)
SW7RESETPresstoresetthemicrocontrollerandcontrolsoftware
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ConnectorFunctions
REFNAMEDESCRIPTION
J1BUSB1553BusAconnection(secondaryoftransformer)
J2BUSA1553BusBconnection(secondaryoftransformer)
J3/1,2RXA/nRXADifferentialLogicsignalfromHI‐1590BusAreceivedatapins
J3/3,4RXB/nRXBDifferentialLogicsignalfromHI‐1590BusBreceivedatapins
J6NotfittedSPIinterfacefortheEEPROMs
J7Dataconnectortoload1553messages
J9USBConnecttoPCtosendSPIcommandsfromterminalemulator
J10ExternalSPIUsetoconnectanexternalSPIforHI‐1590control
J11DebugHeader Usedfordownloadingmicrocontrollerfirmware

AN‐1590,Rev.NewHOLTINTEGRATEDCIRCUITS10/10/14
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TestPointFunctions
REFNAMEDESCRIPTION
TP1/TP2BUSB1553BusBconnection(secondaryoftransformer)
TP4/TP6BUSA1553BusAconnection(secondaryoftransformer)
TP3,8,9,10GNDBoardGround
TP5VCONTConnectiontomeasureofinputanalogamplitudecontrol,notethat
J5shouldbeopen.J4shouldbeopenwheninputtingavoltage.
TP6UPDATETestpointforUpdatesignalindicateswhenMIL‐STD‐1553Bwordhas
beenreceived
TP7VSELThispinmonitorsvoltageontheVSELpincontrolontheoutput
amplitude.
High=SPIcontrol0‐24V
Float=AnalogControl
Low=SPIControl,0‐5.1V
TP3,8,9,10GNDBoardGround
TP113V3 VLOGICSupply,connectpowersupplyhere
TP21VDDVLOGICaftersupplyfilter
TP13IRQINTERRUPT
TP14ACTIVEProducespulsejustbefore1553messagestarts,canbeusedto
triggerscope.
TP17/18TXDO/RXDOUSBdata.
TXA,nTXAConnectexternal1553datahereifnotusingtheonboardmessage
generatorforBUSA.NeedtocutlinksTXAandnTXA.
TXB,nTXBConnectexternal1553datahereifnotusingtheonboardmessage
generatorforBUSB.NeedtocutlinksTXBandnTXB.
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AN‐1590,Rev.NewHOLTINTEGRATEDCIRCUITS10/10/14
UsingtheBoard
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1. Checkallthelinkandswitchpositionscomplywiththetablesabove.Connecta3.3V,1A
supplytothe3V3testpoint.A1Asupplycurrentisrequiredatmaximumamplitude.Verify
the‘PowerOn’LEDislit;theboardshouldtakeabout160mA,whennotsending1553
messages.ConnecttheminiUSBleadtoyourPCandthentotheHI‐1590board.YourPC
shouldautomaticallyinstallthedriver,ifnotthedriverFT231canbeinstalledfromtheHolt
CD.IfyouhaveproblemsinstallingthedriverpleaserefertotheFTDIwebsitebelow:
http://www.ftdichip.com/Documents/InstallGuides.htm
2. AllcontroloftheHI‐1590isdonethroughthe‘ControlConsole’.Thisrequiresuseofa
terminalemulatorforcommunication,suchasHyperTerminalorTeraTerm.TeraTermis
usedwithWindowsversionsofVistaorlaterandissuppliedontheHoltCD.
ToinstallTeraTerm:
UsetheTeraTerminstallerprogramteraterm.exefromtheHoltCD.Acceptthelicense
agreementstatingredistributionispermittedprovidedthatcopyrightnoticeisretained.
ThenoticecanbedisplayedfromtheTeraTermwindowbyclickingHelpthenclicking
AboutTeraTerm.Continuingtoinstall…
AcceptthedefaultinstalldestinationandclickNext.
AttheSelectComponentsscreen,unselectalloptionsexceptAdditionalPlugin=
TTXResizeMenuandclickNext.
Selecttheinstalledlanguage,thenclickNext.
AcceptthedefaultStartMenufolder,thenclickNext.
Selectanydesiredshortcuts,thenclickNext.
AttheReadytoInstallscreen,clickInstall.
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RuntheTeraTermprogram.AttheNewConnectionscreen,selectSerialandchoosethe
selectedUSBserialCOMport,youcanfindthecorrectCOMportusingDeviceManager.
3. ClickSetupthenSerialPorttoopentheserialportsetupwindow.
ChoosetheCOMportforthemini‐USBconnectionandthenselectthefollowingsettings:
BaudRate:115200,Data:8bits,Parity:none,Stop:1bit,FlowControl:none
4. Theevaluationsoftwareispreprogrammedintothemicrocontrollerandwasloadedatthe
HoltApplicationsSupportCenter.Onpressingthe‘RESETMICRO’buttonontheboard,the
softwaredisplaysamessageonthemonitor,asshownbelow.

AN‐1590,Rev.NewHOLTINTEGRATEDCIRCUITS10/10/14
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Note:Ifunderanycircumstancesthesoftwarelocksup,usethe‘RESET’keytorestart.
5. Pressthe‘A’keytosettheoutputamplitude.Enterthemaximumamplitudeof‘FF’asshown
below.
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6. ConnectanoscilloscopetotheABUSandBBUSterminal,withthegroundsgoingtonABUS
andnBBUSrespectively.Groundingthenegativebusterminalsprovidesdifferentialvoltage
measurementsusingjustonescopeprobeperbus.TriggerthescopefromtheACTIVEtest
point.PresstheSTOPbutton,thisloadsthe1553messages.PresstheRUNbuttontostart
messagetransmission.ThemessageswillbetransmittedalternatelyontheAandBbuses.
Checkthata1553signalofabout24Vp‐pamplitudeisseenononeofthebuses,asshownin
Fig2below.Every5secondsitwillswitchtotheotherbusandduringtransmissionyou
shouldseethe3.3Vsupplycurrentgouptoabout1A.


AN‐1590,Rev.NewHOLTINTEGRATEDCIRCUITS10/10/14
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Fig2:YellowisBUSAoutput,greenisBUSB,RedistheACTIVEtriggersignal
7. TheHI‐1590canalsoreadbackdatafromtheDACregisterbutonlyafteravaluehasbeen
writtenintotheregister.Pressthe‘D’key,typein‘80’,theprevioussettingof‘FF’shouldbe
readoutasshownbelow.Observetheamplitudeonthescope;thisshouldbereducedby
half,orapproximately12Vp‐p.

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8. TheSPIsoftwarehasarampfunction,thisrampstheamplitudeonbothoutputsupto
maximumandbackdowntozeroina‘sawtooth’function.Pressthe‘Y’buttonandobserve
theamplituderisingandfalling.WhilstinthismodeswitchtheVSELswitchto‘Low’,this
selectsthelowamplitude,youshouldseetheoscilloscopetracegodowntoonefifth
maximumamplitudeorabout5V.
9. AswellasSPIcontrolofamplitudethroughaDAC,theHI‐1590hastheoptionofusingan
analogvoltageof0to3.3VDCtocontroltheamplitude.Tousethisfeaturemovethejumper

AN‐1590,Rev.NewHOLTINTEGRATEDCIRCUITS10/10/14
linkfromJ5toJ4.NowamplitudeiscontrolledbypotentiometerR3,turnfullyclockwisefor
maximumamplitude.AnexternalvoltagecanbeusedbyremovingtheJ4jumperand
applyingthevoltagetopin2ofJ4.Therangeis0toVLOGIC(3.3Vnominal)
10. TotestHI‐1590BusAandBusBreceivers,RXENAand/orRXENBswitchesshouldbeinthe
highposition.Any1553BcompliantdataisnowoutputontherelevantRXA/nRXAand
RXB/nRXBpinsofJ3.AnexampleisshowninFig3below:

Fig3:YellowisBUSAoutput,greenisRXAoutput,RedistheACTIVEtriggersignal
11. Ifisolationofthe1553Boutputsisrequiredfromtheboardgroundthesolderedjumpers
JP11andJP12shouldbeopened.