Texas Instruments DEM-PCM2912A EVM Network Card User Manual


 
PinAssignmentsandTerminalFunctions
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Table1-1.PCM2912ATerminalFunctions(continued)
TQFP-36
NameTerminalI/ODescription
V
CCR
21-–AnalogpowersupplyforheadphoneamplifierofR-channel
V
OUT
R22OHeadphoneoutputforR-channel
MAMP23IMicrophonepreamplifiergaincontrol(LOW:Preamplifieroff;HIGH:Preamplifieron=+20
dB)
POWER24IPowerconsumptiondeclarationselectpin(LOW:100mA;HIGH:500mA)
PGND25Analoggroundformicrophonebias,microphoneamplifier,andPGA
V
CCP
26AnalogpowersupplyforPLL
TEST127ITestpin.Mustbesettohigh.
TEST028ITestpin.Mustbesettolow.
SSPND29OSuspendflag(LOW:Suspend;HIGH:Operationalstate)
MMUTE30IMicrophonemutecontrol,activehigh(LOW:Muteoff;HIGH:Muteon)
REC31OStatusoutputforrecord(LOW:Record;FLASH:Muteonrecord;HIGH:Stop)
PLAY32OStatusoutputforplayback(LOW:Playback;FLASH:Muteonplayback;HIGH:Stop)
12DescriptionSBAU141January2009
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