User Manual

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MAX98089
Low-Power, Stereo Audio Codec
with FlexSound Technology
Table 9. Common Digital Audio Formats
X = Don’t care.
Figure 15. Digital Audio Signal Routing
the playback path in the digital audio interface to allow
the IC’s full complement of digital signal processing to
be used. Loopback allows digital data input to either
SDINS1 or SDINS2 to be routed from one interface to the
other for output on SDOUTS2 or SDOUTS1. Both inter-
faces must be configured for the same sample rate, but
the interface format need not be the same. This allows
the IC to route audio data from one device to another,
converting the data format as needed. Figure 15 shows
the available digital signal routing options.
MAS1
DAI1
DAI1
RECORD PATH
DAI1
PLAYBACK PATH
DAI2
PLAYBACK PATH
SEL1 SEL2
BCLK1
BCLKS1
LRCLK1
SDOUT1
SDIN1
LTEN1
LBEN2
+
BIT
CLOCK
FRAME
CLOCK
DATA
OUTPUT
DATA
INPUT
MAS1
HIZOFF1
SDOEN1
SDIEN1 SDIEN2
MAS2
DAI2
BCLK2
LRCLK2
SDOUT2
SDIN2
BIT
CLOCK
FRAME
CLOCK
DATA
OUTPUT
DATA
INPUT
MAS2
HIZOFF2
SDOEN2
LRCLKS1 SDOUTS1 SDINS1 DVDDS1 BCLKS2 LRCLKS2 SDOUTS2 SDINS2 DVDDS2
MUX
LBEN1
MODE WCI1/WCI2 BCI1/BCI2 DLY1/DLY2 TDM1/TDM2 SLOTL1/SLOTL2 SLOTR1/SLOTR2
Left Justified 1 0 0 0 X X
I
2
S 0 0 1 0 X X
PCM X 1 X 1 0 0
TDM X 1 X 1 Set as desired