max98088 Maxim Integrated Products, Inc., max98088 Datasheet - Page 66
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
Table 3. Microphone Input Registers
66
REGISTER
0x35/0x36
0x48
BIT
6
5
4
3
2
1
0
7
6
5
4
1
0
PGAM1/PGAM2
PA1EN/PA2EN
DIGMICL
DIGMICR
MICCLK
EXTMIC
NAME
MIC1/MIC2 Preamplifier Gain
Course microphone gain adjustment.
00 = Preamplifier disabled
01 = 0dB
10 = 20dB
11 = 30dB
MIC1/MIC2 PGA
Fine microphone gain adjustment.
Digital Microphone Clock Frequency
Select a frequency that is within the digital microphone’s clock frequency range.
Set OSR1 = 1 when using a digital microphone.
00 = PCLK/8
01 = PCLK/6
10 = 64 x LRCLK
11 = Reserved
Left Digital Microphone Enable
Set PAL1EN = 00 for proper operation.
0 = Disabled
1 = Enabled
Right Digital Microphone Enable
Set PAR1EN = 00 for proper operation.
0 = Disabled
1 = Enabled
External Microphone Connection
Routes INA_/EXTMIC_ to the microphone preamplifiers. Set INAEN = 0 when using
INA_/EXTMIC_ as a microphone input.
00 = Disabled
01 = MIC1 input
10 = MIC2 input
11 = Reserved
VALUE
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x00
0x01
0x02
GAIN (dB)
+20
+19
+18
+17
+16
+15
+14
+13
+12
+11
+10
DESCRIPTION
0x14 to 0x1F
VALUE
0x0C
0x0D
0x0B
0x0E
0x0F
0x10
0x11
0x12
0x13
GAIN (dB)
+9
+8
+7
+6
+5
+4
+3
+2
+1
0
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