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modecontrolregisters(pcm1780/82)
用户-programmablemodecontrols
RegisterMap
pcm1780,pcm1781,pcm1782
SLES132A–MARCH2005–REVISEDAPRIL2005
thepcm1780/82includesanumberofuser-programmablefunctions,whichareaccessedviacontrolregisters.
theregistersareprogrammedusingtheserialcontrolinterface,whichwaspreviouslydiscussedinthe
软件
控制
sectionofthisdatasheet.table5liststheavailablemodecontrolfunctions,alongwiththeirresetdefault
conditionsandassociatedregisterindex.
themodecontrolregistermapisshownintable6.eachregisterincludesanindex(oraddress)indicatedbythe
idx[6:0]bits.
table5.用户-programmablemodecontrols
functionresetdefaultregisterbit(s)
digitalattenuationcontrol,0dbto–63dbin0.5-db0db,noattenuation16and17at1[7:0],at2[7:0]
步伐
softmutecontrolmutedisabled18mut[2:0]
oversamplingratecontrol×64,×32,×1618over
SoftresetcontrolResetdisabled18SRST
dacoperationcontroldac1anddac2enabled19dac[2:1]
de-emphasisfunctioncontrolde-emphasisdisabled19dm12
de-emphasissamplerateselection44.1khz19dmf[1:0]
audiodataformatcontrol24-位,left-justified20fmt[2:0]
DigitalfilterrolloffcontrolSharprolloff20FLT
digitalattenuationmodeselect0to–63db,0.5db/step21dams
OutputphaseselectNormalPhase22DREV
零-flagpolarityselecthigh22zrev
零-flagfunctionselectl-,r-channelsindependent22azro
table6.modecontrolregistermap
idxregis-b15b14b13b12b11b10b9b8b7b6b5b4b3b2b1b0
(b8–b14)ter
10h160IDX6IDX5IDX4IDX3IDX2IDX1IDX0AT17AT16AT15AT14AT13AT12AT11AT10
11h170IDX6IDX5IDX4IDX3IDX2IDX1IDX0AT27AT26AT25AT24AT23AT22AT21AT20
12h180IDX6IDX5IDX4IDX3IDX2IDX1IDX0SRSTOVERRSVRSVRSVRSVMUT2MUT1
13h190IDX6IDX5IDX4IDX3IDX2IDX1IDX0RSVDMF1DMF0DM12RSVRSVDAC2DAC1
14h200IDX6IDX5IDX4IDX3IDX2IDX1IDX0RSVRSVFLTRSVRSVFMT2FMT1FMT0
15h210IDX6IDX5IDX4IDX3IDX2IDX1IDX0RSVRSVRSVRSVRSVRSVRSVDAMS
16h220IDX6IDX5IDX4IDX3IDX2IDX1IDX0RSVRSVRSVRSV0AZROZREVDREV
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