Datasheet

www.ti.com
3.2TerminalDescriptions
3.3Reset(RESET)
TAS3108,TAS3108IA
AUDIODIGITALSIGNALPROCESSORS
SLES152B–OCTOBER2005–REVISEDNOVEMBER2007
TERMINALPULLUP/
INPUT/
DESCRIPTION
PULLDOWN
(2)
OUTPUT
(1)
NAMENO.
AVDD38IAnalogpowersupply(3.3V)
AVSS1Analogground
CS07IPulldownChipselect
DVDD9,30IDigitalpowersupplyinput(3.3V)
DVSS10,29Digitalground
GPIO8I/OPullupGPIOcontrol(userprogrammable)
LRCLK19I/OPulldownSamplerateclock(f
S
)
MCLKIN5IMasterclockinput(connecttogroundwhennotinuse)
MCLKO21OMasterclockoutput
MICROCLK_DIV6IPulldownInternalmicroprocessorclockdividecontrol
Powerdown.Powersdownalllogicandstopsallclocks,activelow.
PDN31IPullup
Coefficientmemoryremainsstablethroughthepower-downcycle.
PLL034IPullupPLLcontrol0
PLL135IPulldownPLLcontrol1
PLL236IPullupPLLcontrol2
RESERVED33,37Reserved.Connecttoground
RESET32IPullupReset,activelow
SCL116I/OI
2
Cport1clock(alwaysaslave)
SCL218I/OI
2
Cport2clock(alwaysamaster)
SCLKIN20IPulldownBitclockinput
SCLKOUT122OBitclock1out.Usedtoreceiveinputserialdata.
SCLKOUT223OBitclock2out.Usedtoclockoutputserialdata.
SDA115I/OI
2
Cport1data(alwaysaslave)
SDA217I/OI
2
Cport2data(alwaysamaster)
SDIN111IPulldownSerialdatainput1
SDIN212IPulldownSerialdatainput2
SDIN313IPulldownSerialdatainput3
SDIN414IPulldownSerialdatainput4
SDOUT127OSerialdataoutput1
SDOUT226OSerialdataoutput2
SDOUT325OSerialdataoutput3
SDOUT424OSerialdataoutput4
VR_PLL2Internalregulator.Thispinmustnotbeusedtopowerexternaldevices.
XTALI3OOscillatorinput(connecttogroundwhennotinuse)
XTALO4OOscillatoroutput
VR_DIG28Internalregulator.Thispinmustnotbeusedtopowerexternaldevices.
(1)I=input,O=output
(2)Allpullupsare20-µAweakpullups,andallpulldownsare20-µAweakpulldowns.Thepullupsandpulldownsareincludedtoensure
properinputlogiclevelsiftheterminalsareleftunconnected(pullups→logic1input;pulldowns→logic0input).Devicesthatdrive
inputswithpullupsmustbeabletosink20µAwhilemaintainingalogic-0drivelevel.Devicesthatdriveinputswithpulldownsmustbe
abletosource20µAwhilemaintainingalogic-1drivelevel.
TheRESETpinisanasynchronouscontrolsignalthatrestoresallTAS3108/TAS3108IAcomponentsto
thedefaultconfiguration.Whenaresetoccurs,theaudioDSPcoreisputintoanidlestateandthe8051
startsinitialization.AvalidMCLKIorXTLImustbepresentwhenclearingtheRESETpintoinitiatea
devicereset.Aresetcanbeinitiatedbyapplyingalogic0onRESET.Aresetcanalsobeissuedatpower
turnonbythethreeinternalpowersupplies.
SubmitDocumentationFeedbackPhysicalCharacteristics7
Not Recommended for New Designs