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6.8.2ControlRegister2Tab
KitOperation
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Figure7.ControlRegister1Tab
TheTurboModecontrol(Figure8)setstheSCLKfrequencyto16×FS×(numberofdevices)×modeor
MCLK÷P,wherenumberofdevicesisthenumberofcodecsincascade(default=1)andthemodeis1for
continuousdatatransfermodeand2forprogrammingmode.TheHostPortControlcanbeusedto
assigndifferentfunctionstotheSDApinortosetSCLandSDAforI2CorS2C.Whenusingthe
USB-MODEVMAudioInterfaceConfigurationtheHostPortControlmustbesettoSDA/SCLareI2C
interfacepins.
Ifthehostinterfaceisnotneeded,thetwopinsofSCLandSDAcanbeprogrammedtobecome
general-purposeI/Os.IfselectedtobeusedasI/Opins,theSDAandSCLpinsbecomeoutputandinput
pinsrespectively,determinedbyD1andD0.SDAcanthenbesetto1or0bytogglingtheGeneral
PurposeOutputcontrol.
TheDecimation/Interpolationfilterbypassbuttonbypassesthefiltersselectedinregister1.Thiscanbe
usefulwhenusingaDSPtoapplysuchfilters.TheI
2
CBaseAddresscontrolallowstheusertoselectthe
firstthreebits(MSBfirst)ofthedevice's7-bitI
2
Caddress.Thelast4bitsoftheaddresswilldependon
theautomaticcascadedetection(ACD)featureofSMARTDM™,whichsetsthedeviceposition.
16TLV320AIC12KEVMB-KandTLV320AIC14KEVMB-KUser'sGuideSLAU229B–October2007–RevisedAugust2008
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