Datasheet

CLOCKCONTROLREGISTER(0x00)
DEVICEIDREGISTER(0x01)
TAS5706A
TAS5706B
SLOS606D–MARCH2009–REVISEDSEPTEMBER2009............................................................................................................................................. www.ti.com
Inthemanualmode,theclockcontrolregisterprovidesawayforthesystemmicroprocessortoupdatethedata
andclockratesbasedonthesamplerateandassociatedclockfrequencies.Intheauto-detectmode,theclocks
areautomaticallydeterminedbytheTAS5706A.Inthiscase,theclockcontrolregistercontainstheauto-detected
clockstatusasautomaticallydetected(D7–D2).BitsD7–D5selectsthesamplerate.BitsD4–D2selectthe
MCLKfrequency.BitD0isusedinmanualmodeonly.Inthismode,whentheclocksareupdateda1mustbe
writtentoD0toinformtheDAPthatthewrittenclocksarevalid.
Table3.ClockControlRegister(0x00)
D7D6D5D4D3D2D1D0FUNCTION
000–––––f
S
=32-kHzsamplerate
001–––––f
S
=38-kHzsamplerate
010–––––f
S
=44.1-kHzsamplerate
011–––––f
S
=48-kHzsamplerate
(1)
100–––––f
S
=88.2-kHzsamplerate
101–––––f
S
=96-kHzsamplerate
110–––––f
S
=176.4-kHzsamplerate
111–––––f
S
=192-kHzsamplerate
–––000––MCLKfrequency=64×f
S
(2)
–––001––MCLKfrequency=128×f
S
(3)
–––010––MCLKfrequency=192×f
S
–––011––MCLKfrequency=256×f
S
(1)
–––100––MCLKfrequency=384×f
S
(4)
–––101––MCLKfrequency=512×f
S
(4)
–––110––Reserved
–––111––Reserved
––––––1–Bitclock(SCLK)frequency=48×f
S
(5)
Bitclock(SCLK)frequency=64×f
S
or32×f
S
(selectedinregister
––––––0–
0x04)
(1)
–––––––0Clocknotvalid(inmanualmodeonly)
(1)
––––1Clockvalid(inmanualmodeonly)
(1)Defaultvaluesareinbold.
(2)Ratenotavailablefor32-,44.1-,and48-kHzdatarates
(3)Ratenotavailablefor32-kHzdatarate
(4)Ratenotavailablefor176.4-kHzand192-kHzdatarates
(5)Rateonlyavailablefor192-f
S
and384-f
S
MCLKfrequencies
ThedeviceIDregistercontainstheIDcodeforthefirmwarerevision.
Table4.DeviceIDRegister(0x01)
D7D6D5D4D3D2D1D0FUNCTION
0–––––––Default
(1)
–0101010Identificationcode
(1)Defaultvaluesareinbold.
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TAS5706A is Not Recommended for New Designs