Datasheet

SERIALDATAINTERFACEREGISTER(0x04)
SYSTEMCONTROLREGISTER2(0x05)
TAS5706A
TAS5706B
SLOS606D–MARCH2009–REVISEDSEPTEMBER2009............................................................................................................................................. www.ti.com
Table7.SystemControlRegister1(0x03)(continued)
D7D6D5D4D3D2D1D0FUNCTION
––––1–––Disableclockautodetect
–––––0––Enablesoftstart
(1)
–––––1––Disablesoftstart
––––––00Node-emphasis
(1)
––––––01Reserved
––––––10De-emphasisforf
S
=44.1kHz
––––––11De-emphasisforf
S
=48kHz
AsshowninNoLabel,TAS5706Asupports21serialdatamodes.Thedefaultis24-bit,I
2
Smode,
SerialDataInterfaceControlRegister(0x04)Format
RECEIVESERIALDATAWORD
D7–D5D4D3D2D1D0
INTERFACEFORMATLENGTH
Right-justified1600000000
Right-justified2000000001
Right-justified2400000010
I
2
S1600000011
I
2
S2000000100
I
2
S
(1)
2400000101
Left-justified1600000110
Left-justified2000000111
Left-justified2400001000
Reserved00001001
Right-justified1800001010
Reserved00001011
Reserved00001100
Reserved00001101
Reserved00001110
Reserved00001111
Reserved00010000
I
2
S(32f
S
SCLK)1600010011
Left-justified(32f
S
SCLK)00010110
Reserved00011001
Reserved00011011
Reserved00011101
(1)Defaultvaluesareinbold.
BitD6isacontrolbitandbitD5isaconfigurationbit.
WhenbitD6issetlow,thesystemstartsplaying;otherwise,theoutputsareshutdown.
BitD5definestheconfigurationofthesystem,thatis,itdetermineswhatconfigurationthesystemrunsinwhen
bitD6issetlow.Whenthisbitisasserted,allchannelsareswitching.Otherwise,onlyasubsetofthePWM
channelswillrun.Thechannelstoshutdownaredefinedintheshutdowngroupregister(0x19).BitD5should
onlybechangedwhenbitD6isset,meaningthatitisonlypossibletoswitchconfigurationsbyresettingtheDAP
andthenrestartingitagaininthenewconfiguration.
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TAS5706A is Not Recommended for New Designs