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TAS5518CPAG

Part # TAS5518CPAG
Description 8 CHANNEL DIGITAL AUDIO PWM PROCESSOR
Category IC
Availability In Stock
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Texas Instruments
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

2.2.5.2TAS5518CAudioSignal-ProcessingFunctions
TAS5518C
8-ChannelDigitalAudioPWMProcessor
www.ti.com
SLES238A–SEPTEMBER2008–REVISEDJULY2009
Tosupportefficientlytheprocessingrequirementsofbothmultichannel32-kHzto96-kHzdataandthe
2-channel176.4-kHzand192-kHzdata,theTAS5518Chasseparateaudio-processingfeaturesfor
32-kHzto96-kHzdataratesandfor176.4kHzand192kHz.SeeTable2-2forasummaryofTAS5518C
processingfeaturesets.
TheDAPprovides10primarysignal-processingfunctions:
•Thedata-processinginputhasafull8×8inputcrossbarmixer.Thisenableseachinputtobeanymix
oftheeightinputchannels.
•TwoI
2
Cprogrammablethresholddetectorsineachchannelsupportautomute.
•Sevenbiquadsperchannel
•Foursoftbassandtrebletonecontrolswith±18-dBrange,programmablecornerfrequencies,and
second-orderslopes.In8-channelmode,bassandtreblecontrolsarenormallyconfiguredasfollows:
–Bassandtreble1:Channel1(left),channel2(right),andchannel7(center)
–Bassandtreble2:Channel3(leftsurround)andchannel4(rightsurround)
–Bassandtreble3:Channel5(leftbacksurround)andchannel6(rightbacksurround)
–Bassandtreble4:Channel8(subwoofer)
•Individualchannelandmastervolumecontrols.Eachcontrolprovidesanadjustmentrangeof18dBto
–109dBplusmute.Thispermitsatotalvolumedevicecontrolrangeof36dBto–109dBplusmute.
Themastervolumecontrolcanbeconfiguredtocontrolsixoreightchannels.TheDAPsoftvolume
andmuteupdateintervalisI
2
Cprogrammable.Theupdateisperformedatafixedrateregardlessof
thesamplerate.
•Programmableloudnesscompensationthatiscontrolledviathecombinationofthemasterand
individualvolumesettings.
•Twodual-threshold,dual-rate,dynamicrangecompressors(DRCs).Thevolumegainvaluesprovided
areusedasinputparametersusingthemaximumRMS(mastervolume×individualchannelvolume).
•8×2outputmixer(channels1–6).Eachoutputisamixofanytwosignal-processedchannels.Itis
recommendedtousethepass-throughoutputmixerconfiguration.
•8×3outputmixer(channels7and8).Eachoutputisamixofanythreesignal-processedchannels.Itis
recommendedtousethepass-throughoutputmixerconfiguration.
•TheDAPmaintainsthreesetsofcoefficientbanksthatareusedtomaintainseparatesetsof
sample-rate-dependentparametersforthebiquad,tonecontrols,loudness,andDRCinRAM.These
canbesettobeautomaticallyselectedforoneormoredatasampleratesorcanbemanuallyselected
underI
2
Cprogramcontrol.Thisfeatureenablescoefficientsfordifferentsampleratestobestoredin
theTAS5518Candthenselectedwhenneeded.
SubmitDocumentationFeedbackDescription19
Not Recommended For New Designs
2.3TAS5518CDAPArchitecture
2.3.1TAS5518CDAPArchitectureDiagrams
TAS5518C
8-ChannelDigitalAudioPWMProcessor
SLES238A–SEPTEMBER2008–REVISEDJULY2009
www.ti.com
Table2-2.TAS5518CAudio-ProcessingFeatureSets
32kHz–96kHz32kHz–96kHz176.4-and192-kHz
FEATURE
8-CHANNELFEATURESET6+2LINEOUTFEATURESETFEATURESET
Signal-processingchannels86+23
Pass-throughchannelsN/A5
Mastervolume1for8channels1for6channels1for8channels
Individualchannelvolume
88
controls
FourbassandtrebletonecontrolsFourbassandtrebletonecontrols
Twobassandtrebletone
with±18-dBrange,programmablewith±18-dBrange,programmable
controlswith±18-dBrange,
cornerfrequencies,andsecond-cornerfrequencies,andsecond-
programmablecorner
Bassandtrebletoneorderslopesorderslopes
frequencies,andsecond-order
controlsL,R,andC(Ch1,2,and7)L,R,andC(Ch1,2,and7)
slopes
LS,RS(Ch3and4)LS,RS(Ch3and4)
LandR(Ch1and2)
LBS,RBS(Ch5and6)Sub(Ch8)
Sub(Ch8)
Sub(Ch8)LineLandR(Ch5and6)
Biquads5621
DynamicrangeDRC1forsevensatellitesandDRC1forfivesatellitesandDRC2DRC1fortwosatellitesand
compressorsDRC2forsubforsub(Ch5and6uncompressed)DRC2forsub
Eachofthethreesignal-
processingchannelsorthefive
pass-thoughchannelinputscan
Eachoftheeightsignal-processingchannelinputscanbeanymixofthebeanymixoftheeightinput
Input/outputmapping/
eightinputchannels.channels.
mixing
Eachoftheeightoutputscanbeanymixofanytwoprocessedchannels.Eachoftheeightoutputscanbe
anymixofanyofthethree
processedchannelsorfive
bypasschannels.
DC-blockingfilters
(implementedinPWMEightchannels
section)
Digitalde-emphasis
Eightchannelsfor32kHz,Sixchannelsfor32kHz,44.1kHz,
(implementedinPWMN/A
44.1kHz,and48kHzand48kHz
section)
LoudnessEightchannelsSixchannelsThreechannels
Numberofcoefficientsets
Threeadditionalcoefficientsetscanbestoredinmemory.
stored
Figure2-1showstheTAS5518CDAParchitectureforf
S
≤96kHz.NotetheTAS5518Cbassmanagement
architectureshowninchannels1,2,7,and8.NotethattheI
2
Cregistersareshowntohelpthedesigner
configuretheTAS5518C.
Figure2-2showstheTAS5518Carchitectureforf
S
=176.4kHzorf
S
=192kHz.Notethatonlychannels
1,2,and8containallthefeatures.Channels3–7arepass-throughexceptforvolumecontrols.
Figure2-3showsTAS5518Cdetailedchannelprocessing.Theoutputmixeris8×2forchannels1–6and
8×3forchannels7and8.
Description 20SubmitDocumentationFeedback
Not Recommended For New Designs
Coeff = 0 (lin), (I
2
C 0x4C)
Coeff = 1 (lin)
(I
2
C 0x4D)
7 DAP 1
BQ
(0x51−
0x57)
SDIN1-L (L)
(1)
SDIN1-R (R)
SDIN2-L (LS)
SDIN2-R (RS)
SDIN3-L (LBS)
SDIN3-R (RBS)
SDIN4-L (C)
SDIN4-R (LFE)
A
B
C
D
E
F
G
H
IP Mixer 1
(I
2
C 0x41)
8 × 8
Crossbar
Input Mixer
Master Vol
(0xD9)
DAP 1
Volume
(0xD1)
Max Vol
Bass and
Treble 1
(0xDA−
0xDD)
Loud-
ness
(0x91−
0x95)
OP Mixer 1
(I
2
C 0xAA)
8 × 2 Output
Mixer
L to
PWM1
DRC1
(0x96−
0x9C)
7 DAP 2
BQ
(0x58−
0x5E)
SDIN1-L (L)
SDIN1-R (R)
(1)
SDIN2-L (LS)
SDIN2-R (RS)
SDIN3-L (LBS)
SDIN3-R (RBS)
SDIN4-L (C)
SDIN4-R (LFE)
A
B
C
D
E
F
G
H
IP Mixer 2
(I
2
C 0x42)
8 × 8
Crossbar
Input Mixer
Master Vol
(0xD9)
DAP 2
Volume
(0xD2)
Max Vol
Bass and
Treble 1
(0xDA−
0xDD)
Loud-
ness
(0x91−
0x95)
OP Mixer 2
(I
2
C 0xAB)
8 × 2 Output
Mixer
R to
PWM2
DRC1
(0x96−
0x9C)
7 DAP 3
BQ
(0x5F−
0x65)
SDIN1-L (L)
SDIN1-R (R)
SDIN2-L (LS)
(1)
SDIN2-R (RS)
SDIN3-L (LBS)
SDIN3-R (RBS)
SDIN4-L (C)
SDIN4-R (LFE)
A
B
C
D
E
F
G
H
IP Mixer 3
(I
2
C 0x43)
8 × 8
Crossbar
Input Mixer
Master Vol
(0xD9)
DAP 3
Volume
(0xD3)
Max Vol
Bass and
Treble 2
(0xDA−
0xDD)
Loud-
ness
(0x91−
0x95)
OP Mixer 3
(I
2
C 0xAC)
8 × 2 Output
Mixer
LS to
PWM3
DRC1
(0x96−
0x9C)
7 DAP 4
BQ
(0x66−
0x6C)
SDIN1-L (L)
SDIN1-R (R)
SDIN2-L (LS)
SDIN2-R (RS)
(1)
SDIN3-L (LBS)
SDIN3-R (RBS)
SDIN4-L (C)
SDIN4-R (LFE)
A
B
C
D
E
F
G
H
IP Mixer 4
(I
2
C 0x44)
8 × 8
Crossbar
Input Mixer
Master Vol
(0xD9)
DAP 4
Volume
(0xD4)
Max Vol
Bass and
Treble 2
(0xDA−
0xDD)
Loud-
ness
(0x91−
0x95)
OP Mixer 4
(I
2
C 0xAD)
8 × 2 Output
Mixer
RS to
PWM4
DRC1
(0x96−
0x9C)
7 DAP 5
BQ
(0x6D−
0x73)
SDIN1-L (L)
SDIN1-R (R)
SDIN2-L (LS)
SDIN2-R (RS)
SDIN3-L (LBS)
(1)
SDIN3-R (RBS)
SDIN4-L (C)
SDIN4-R (LFE)
A
B
C
D
E
F
G
H
IP Mixer 5
(I
2
C 0x45)
8 × 8
Crossbar
Input Mixer
Master Vol
(0xD9)
DAP 5
Volume
(0xD5)
Max Vol
Bass and
Treble 3
(0xDA−
0xDD)
Loud-
ness
(0x91−
0x95)
OP Mixer 5
(I
2
C 0xAE)
8 × 2 Output
Mixer
LBS to
PWM5
DRC1
(0x96−
0x9C)
7 DAP 6
BQ
(0x74−
0x7A)
SDIN1-L (L)
SDIN1-R (R)
SDIN2-L (LS)
SDIN2-R (RS)
SDIN3-L (LBS)
SDIN3-R (RBS)
(1)
SDIN4-L (C)
SDIN4-R (LFE)
A
B
C
D
E
F
G
H
IP Mixer 6
(I
2
C 0x46)
8 × 8
Crossbar
Input Mixer
Master Vol
(0xD9)
DAP 6
Volume
(0xD6)
Max Vol
Bass and
Treble 3
(0xDA−
0xDD)
Loud-
ness
(0x91−
0x95)
OP Mixer 6
(I
2
C 0xAF)
8 × 2 Output
Mixer
RBS to
PWM6
DRC1
(0x96−
0x9C)
5 DAP 7
BQ
(0x7D−
0x81)
SDIN1-L (L)
SDIN1-R (R)
SDIN2-L (LS)
SDIN2-R (RS)
SDIN3-L (LBS)
SDIN3-R (RBS)
SDIN4-L (C)
(1)
SDIN4-R (LFE)
A
B
C
D
E
F
G
H
IP Mixer 7
(I
2
C 0x47)
8 × 8
Crossbar
Input Mixer
Master Vol
(0xD9)
DAP 7
Volume
(0xD7)
Max Vol
Bass and
Treble 1
(0xDA−
0xDD)
Loud-
ness
(0x91−
0x95)
OP Mixer 7
(I
2
C 0xB0)
8 × 3 Output
Mixer
C to
PWM7
DRC1
(0x96−
0x9C)
5 DAP 8
BQ
(0x84−
0x88)
SDIN1-L (L)
SDIN1-R (R)
SDIN2-L (LS)
SDIN2-R (RS)
SDIN3-L (LBS)
SDIN3-R (RBS)
SDIN4-L (C)
SDIN4-R (LFE)
(1)
A
B
C
D
E
F
G
H
IP Mixer 8
(I
2
C 0x48)
8 × 8
Crossbar
Input Mixer
Master Vol
(0xD9)
DAP 8
Volume
(0xD8)
Max Vol
Bass and
Treble 4
(0xDA−
0xDD)
Loud-
ness
(0x91−
0x95)
OP Mixer 8
(I
2
C 0xB1)
8 × 3 Output
Mixer
Sub to
PWM8
DRC2
(0x9D−
0xA1)
2 DAP 8
BQ
(0x82−
0x83)
B0014-01
Coeff = 0 (lin), (I
2
C 0x4F)
Coeff = 1 (lin)
(I
2
C 0x50)
Coeff = 0 (lin), (I
2
C 0x49)
Coeff = 0 (lin)
(I
2
C 0x4A)
2 DAP 7
BQ
(0x7B−
0x7C)
Coeff = 0 (lin), (I
2
C 0x4B)
Coeff = 0 (lin), (I
2
C 0x4E)
TAS5518C
8-ChannelDigitalAudioPWMProcessor
www.ti.com
SLES238A–SEPTEMBER2008–REVISEDJULY2009
(1)Defaultinputs
Figure2-1.TAS5518CDAPArchitectureWithI
2
CRegisters(f
S
≤96kHz)
SubmitDocumentationFeedbackDescription21
Not Recommended For New Designs
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