MS6821
MOSA
DEMO BOARD
4 Stereo inputs / 2W PA output integrated Audio DAC and Volume Control
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Function description
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Labelꢀ1:ꢀSupplyꢀInputꢀ
Supplyꢀvoltageꢀrangeꢀisꢀ2.4Vꢀtoꢀ5.5V.ꢀ
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Labelꢀ2:ꢀHeadphoneꢀJackꢀ
Usedꢀ3.5mmꢀdiameterꢀofꢀheadphoneꢀwithꢀ32ohmꢀ
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Labelꢀ3:ꢀDACꢀoutputꢀ
Connectedꢀtoꢀaꢀpostꢂpowerꢂamplifier,ꢀasꢀactiveꢀspeaker.ꢀ
Inꢀaddition,ꢀusingꢀvolumeꢀcontrolꢀforꢀDAC,ꢀthisꢀoutputꢀcanꢀconnectedꢀtoꢀinputꢀsectionꢀ(labelꢀ6)ꢀasꢀfeedback.ꢀ ꢀ
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Labelꢀ4:ꢀSpeakerꢀOutputꢀ
Connectedꢀtoꢀspeakerꢀwithꢀ8ohmꢀorꢀ4ꢀohmꢀ
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Labelꢀ5:ꢀDigitalꢀSignalꢀInputꢀ
ConnectedꢀtoꢀdigitalꢀaudioꢀformatsꢀasꢀI2S,ꢀRightꢀJustifiedꢀandꢀLeftꢀJustified.ꢀ
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Labelꢀ6:ꢀSignalꢀInputꢀ
Thereꢀareꢀfourꢀstereoꢀinputsꢀinꢀtheꢀsection.ꢀPleaseꢀinputꢀstereoꢀaudioꢀsignal,ꢀasꢀmusicꢀorꢀsineꢀwave.ꢀ
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Labelꢀ7:ꢀResetꢀ
AllꢀI/Oꢀpinsꢀareꢀresetꢀtoꢀdefaultꢀvalues.ꢀ
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Labelꢀ8:ꢀLEDꢀIndicatorꢀ
TheꢀLEDsꢀindicateꢀtheꢀchipꢀstatusꢀandꢀIRꢀreceivedꢀstatus.ꢀItꢀkeepsꢀonꢀaꢀlightꢀstateꢀwhenꢀtheꢀMS6821ꢀisꢀactive.ꢀTheꢀotherꢀ
hand,ꢀkeepsꢀonꢀaꢀdarkꢀstateꢀwhenꢀtheꢀMS6821ꢀisꢀpowerꢂoff.ꢀItꢀisꢀredꢂdarkꢀblinkꢀonceꢀwhenꢀtheꢀMCUꢀhasꢀreceivedꢀtheꢀ
functionꢀcodeꢀcorrectly.ꢀ
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REVꢀ 1.0
ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ 24ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ www.mosanalog.comꢀ
MOSA [ MOSA ELECTRONICS ]
