USB聲卡設計與實現.pdf

1、USB聲卡設計與實現目錄目錄丁l︸V11.esl1.1︸‘上下.土丁上O乙乙二連工左止二JCUOd研11Jesl摘要............................……ABSTRACT..........................……第一章概述.....................……Ll選題背景............……，...……1.2本文的主要內容................……1.3本文的章節(jié)安排....

2、............……第二章USB聲卡原理分析及方案設計..……2.1USB聲卡的功能.................……2.2USB聲卡與主機間的傳輸、控制機制..…2.3USB聲卡的定義................……2.4USB聲卡拓撲結構設計...........……第三章硬件平臺的設計與實現.......……3.1USB聲卡設計規(guī)格...............……3.2USB聲卡電路功能框圖設計......……3

3、.3功能模塊設計..................……3.4USB聲卡硬件電路實現...........……3.5硬件電路的工作過程實現，…，.…，二第四章軟件模塊的設計與實現.......……4.1軟件功能模塊及程序流程設計.....……4.2初始化模塊設計................……4.3電源管理模塊..................……4.4USB聲卡功能控制模塊..........……第五章性能分析.........

4、..........……5.1性能分析項目..................……5.2性能測試分析..................……5.3性能分析總結..................……第六章總結與展望.................……6.1總結..........................……6.2展望..........................……參考文獻........................

5、.……致謝...........................……..…13，.…13..…15，.…22.…25..…31..…31..…33..…36..…38，.…46..…46..…46..…52..…53..…53..…54..…55..…56USB聲卡設計與實現ABSTRACTABSTRACTThisPaPerdemonstrateshowtodesignandimPlementanUSBsoundeard.Thisart

6、iele15basedonthesPeeifieationanddefinitionsoftheUSBaudiodeviee，andshowedthetopograPhyandeireuitbloekdiagramoftheUSBsoundeard.Aeeordingtodiagrams，theeireuithasbeendetermined.Finally，basedonthesPeeifieationofUSBaudioeardan

7、dtheUSBaudioelass，PartofthesoftwarehasbeeneomPleted.Thedesignofthehardwareeireuit15imPlementedbytheIZCinterfaee，mieroproeess(MCU)CY7C67300whiehhastheexternalRAMexpansioninterfaCe，theprogrammablegatearray(FPGA)FLEXIOKPCMa

8、udioeodeeehiPUDA1342.CY7C67300takestheresPonsibilityofeommunieatingwithUSBhostwhiehineludedresPondingtotherequestofthehost，rePortingdevieedeseriPtor，transmittingaudiodatastream，ete.FLEXIOKProeessedtheaudiosignalandtheeon

9、trolsignalofthehost.UDA1342，whiehhasaninternal16一bitADCandDAC，takesthePartoftransferringthedigitalaudiodatatotheanalogsignalforthespeakerandeonvertedtheanalogsignaltodigitaleodefor七hehost.Anditeomeswithmuteandvolumeeontr

10、olwhiehdesignBeeauseenablesthewholereeeivingtheeontroldatafromtheFPGA.ThisfunetionofdatatransmissionbytheUSBbus.ofanexternalUSBaudioeardand16一biteodeeProeessingwhiehavoidtheinterfereneeofthein七ernalnoise，Thesound15muehmo

11、rePerfeetthantheinternalaudioeard.Inadditional，it15iTnPlementedthevolumeeontrolandmutefunetionthroughtwoexternalbuttons.ThedesigneanuseaPowerfulMCUandAudioCodeICwithoutFPGAtoimPlement，butheretheFPGA15eonsideredtoaehievem

12、orefunetiontedueetheeffeetofMCUintermsofverifyingthestabilityandreliabilityofthehardwaredesignandtheeireuitstrueturewhieheanbereferredtoeompletethesingleehiPeireuitdesign。KeywordsusBaudioeard，usBaudiodeviee，usBspeaker，uS