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4PowerSupplies
4.1Stand-AloneOperation
4.2USB-MODEVMInterfacePower
5EVMOperation
PowerSupplies
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J3providesconnectiontothecommonpowerbusfortheTLV320AIC12KEVMB/14KEVMB.Poweris
suppliedonthepinslistedinTable4.
Table4.PowerSupplyPinout
SIGNALPINNUMBERSIGNAL
NCJ3.1J3.2NC
+5VAJ3.3J3.4NC
DGNDJ3.5J3.6AGND
DVDD(1.8V)J3.7J3.8NC
IOVDD(3.3V)J3.9J3.10NC
TheTLV320AIC12KEVMB-K/14KEVMB-Kmotherboard(theUSB-MODEVMInterfaceboard)supplies
powertoJ3oftheTLV320AIC12KEVMB/14KEVMB.Powerforthemotherboardissuppliedeitherthrough
itsUSBconnectionorviaterminalblocksonthatboard.
Whenusedasastand-aloneEVM,powercanbeappliedtoJ3directly.Theusermustbesureto
referencethesuppliestotheappropriategroundsonthatconnector.
CAUTION
Verifythatallpowersuppliesarewithinthesafeoperatinglimitsshownonthe
TLV320AIC12K/14KdatasheetbeforeapplyingpowertotheEVM.
TheUSB-MODEVMInterfaceboardcanbepoweredfromseveraldifferentsources:
•USB
•6VDC–10VDCAC/DCexternalwallsupply(notincluded)
•Labpowersupply
WhenpoweredfromtheUSBconnection,JMP6shouldhaveashuntfrompins1–2(thisisthedefault
factoryconfiguration).Whenpoweredfrom6V-10VDC,eitherthroughtheJ8terminalblockortheJ9
barreljack,JMP6shouldhaveashuntinstalledonpins2-3.Ifpowerisappliedinanyoftheseways,
onboardregulatorsgeneratetherequiredsupplyvoltagesandnofurtherpowersuppliesarenecessary.
IflabsuppliesareusedtoprovidetheindividualvoltagesrequiredbytheUSB-MODEVMInterface,JMP6
shouldhavenoshuntinstalled.VoltagesarethenappliedtoJ2(+5VA),J3(+5VD),J4(+1.8VD),andJ5
(+3.3VD).The+1.8VDand+3.3VDcanalsobegeneratedontheboardbytheonboardregulatorsfrom
the+5VDsupply;toenablethisconfiguration,theswitchesonSW1needtobesettoenablethe
regulatorsbyplacingthemintheONposition(lowerposition,lookingattheboardwithtextreading
right-sideup).If+1.8VDand+3.3VDaresuppliedexternally,disabletheonboardregulatorsbyplacing
SW1switchesintheOFFposition.
EachpowersupplyvoltagehasanLED(D1-D7)thatlightswhenthepowersuppliesareactive.
Thissectionprovidesinformationontheanaloginputandoutput,digitalcontrol,andgeneraloperating
conditionsfortheTLV320AIC12KEVMB/14KEVMB.
6TLV320AIC12KEVMB-KandTLV320AIC14KEVMB-KUser'sGuideSLAU229B–October2007–RevisedAugust2008
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