max98088 Maxim Integrated Products, Inc., max98088 Datasheet - Page 90
max98088
Manufacturer Part Number
max98088
Description
Stereo Audio Codec With Flexsound Technology
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX98088.pdf
(123 pages)
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Stereo Audio Codec
with FLEXSOUND Technology
Use the attenuator at the EQ’s input to avoid clipping
the signal. The attenuator can be programmed for fixed
attenuation or dynamic attenuation based on signal level.
If the dynamic EQ clip detection is enabled, the signal
level from the EQ is fed back to the attenuator circuit to
determine the amount of gain reduction necessary to
avoid clipping.
Table 17. EQ Registers
90
REGISTER
0x30/0x32
0x49
BIT
4
3
2
1
0
7
6
5
1
0
DVEQ1/DVEQ2
EQCLP1/
EQCLP2
EQ2EN
EQ1EN
VS2EN
NAME
VSEN
ZDEN
DAI1/DAI2 EQ Clip Detection
Automatically controls the EQ attenuator to prevent clipping in the EQ.
0 = Enabled
1 = Disabled
DAI1/DAI2 EQ Attenuator
Provides attenuation to prevent clipping in the EQ when full-scale signals are boost-
ed. DVEQ1/DVEQ2 operates only when EQ1EN/EQ2EN = 1 and EQCLP1/EQCLP2
= 1.
See the Click-and-Pop Reduction section.
DAI2 EQ Enable
0 = Disabled
1 = Enabled
DAI1 EQ Enable
0 = Disabled
1 = Enabled
VALUE
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
The MAX98088/MAX98089 EV kit software includes a
graphic interface for generating the EQ coefficients. The
coefficients are sample rate dependent and stored in
registers 0x52 through 0xB5.
GAIN (dB)
-1
-2
-3
-4
-5
-6
-7
0
DESCRIPTION
VALUE
0xA
0xB
0xC
0xD
0x8
0x9
0xE
0xF
GAIN (dB)
-10
-11
-12
-13
-14
-15
-8
-9
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