max98088 Maxim Integrated Products, Inc., max98088 Datasheet - Page 99

• Manufacturer Part Number: max98088
• Description: Stereo Audio Codec With Flexsound Technology
• Manufacturer: Maxim Integrated Products, Inc.

The transfer function for the user-programmable biquad is:
Figure 27. Speaker Amplifier Signal Processing Block Diagram
The coefficients b
rate dependent and stored in registers 0xB4 through
0xC7. Store b
a
Separate filters can be stored for the DAI1 and DAI2
playback paths.
1
and a
PARAMETRIC
5-BAND
2
+
EQ
as negated two’s complement numbers.
EQ1EN
EXCURSION LIMITER
H(z)
MULTI BAND ALC
DV1G:
0/6/12/18dB
DVEQ1:
0dB TO -15dB
0
, b
=
1
, and b
0
b
PARAMETRIC
, b
1 a z
0
5-BAND
DV2:
0dB TO -15dB
DV1:
0dB TO -15dB
+
EQ
+
1
, b
b z
1
EQ2EN
1
2
DVEQ2:
0dB TO -15dB
-1
2
as positive numbers. Store
-1
, a
+
+
a z
DCB2
1
b z
2
, and a
MODE1
DVFLT
2
FILTERS
FILTERS
AUDIO/
AUDIO/
VOICE
-2
-2
2
with FLEXSOUND Technology
are sample
MIXDAL
MIXDAR
MIX
MIX
DALEN
DAREN
DACL
DACR
The MAX98088/MAX98089 EV kit software includes a
graphic interface for generating the user-programmable
biquad coefficients.
Note: Only change the excursion limiter settings when
the signal path is disabled to prevent undesired artifacts.
Stereo Audio Codec
MIXSPL
MIXSPR
MIX
MIX
SPVOLL:
+8dB TO -62dB
SPVOLR:
+8dB TO -62dB
+6dB
+6dB
SPLEN
SPREN
DISTORTION LIMITER
POWER/
SPKRGND
SPKLGND
SPKRVDD
SPKLVDD
SPKLN
SPKRP
SPKRN
SPKLP
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