max98088 Maxim Integrated Products, Inc., max98088 Datasheet - Page 73
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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max98088EWY+
Manufacturer:
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Enable sidetone during full-duplex operation to add a
low-level copy of the recorded audio signal to the play-
back audio signal (Figure 14). Sidetone is commonly
Table 7. ADC Record Level Control Register
Figure 14. Sidetone Block Diagram
REGISTER
0x33/0x34
BIT
5
4
3
2
1
0
ADLEN
ADREN
ADCR
ADCL
AVLG/AVRG
AVL/AVR
NAME
AUTOMATIC
CONTROL
GAIN
AVLG: 0/6/
TO -15dB
AVL:0dB
12/18dB
SIDETONE
SRMIX_
MODE
MODE1
AVFLT
Left/Right ADC Gain
00 = 0dB
01 = 6dB
10 = 12dB
11 = 18dB
Left/Right ADC Level
DSTS
SAMPLE RATE
NOISE GATE
CONVERTER
FILTERS
AUDIO/
VOICE
MIX
VALUE
with FLEXSOUND Technology
Sidetone
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
DVST:
0dB TO -60dB
AVRG: 0/6/
12/18dB
AVR:0dB
TO -15dB
PARAMETRIC
5-BAND
EQ
+
EQ1EN
EXCURSION LIMITER
DV1G:
0/6/12/18dB
MULTI BAND ALC
DVEQ1:
0dB TO -15dB
used in telephony to allow the speaker to hear himself
speak, providing a more natural user experience. The
IC implements sidetone digitally. Doing so helps prevent
unwanted feedback into the playback signal path and
better matches the playback audio signal.
GAIN (dB)
PARAMETRIC
+3
+2
+1
-1
-2
-3
-4
0
5-BAND
DV2:
0dB TO -15dB
DV1:
0dB TO -15dB
EQ
Stereo Audio Codec
EQ2EN
DESCRIPTION
DVEQ2:
0dB TO -15dB
DCB2
MODE1
DVFLT
FILTERS
FILTERS
AUDIO/
AUDIO/
VOICE
VALUE
0xA
0xB
0xC
0xD
0xE
0x8
0x9
0xF
MIXDAL
MIXDAR
MIX
MIX
DALEN
DAREN
DACR
DACL
GAIN (dB)
-10
-11
-12
-5
-6
-7
-8
-9
73
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