max9867 Maxim Integrated Products, Inc., max9867 Datasheet - Page 39

• Manufacturer Part Number: max9867
• Description: Low-power, Stereo Audio Codec
• Manufacturer: Maxim Integrated Products, Inc.

Table 12. Microphone Input Register (continued)
Figure 5. Microphone Input Signal Path
PGAML/PGAMR
PALEN/PAREN
BITS
______________________________________________________________________________________
Left/Right Microphone Preamplifier Gain
Enables the microphone circuitry and sets the preamplifier gain.
00 = Disabled
01 = 0dB
10 = +20dB
11 = +30dB
Left/Right Microphone Programmable Gain Amplifier
Ultra-Low Power Stereo Audio Codec
SETTING
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
MICBIAS
MICLP
MICLN
MICRP
MICRN
1.5V
GAIN (dB)
MAX9867
+20
+19
+18
+17
+16
+15
+14
+13
+12
+10
+11
0/20/30dB
0/20/30dB
PREAMP
PREAMP
FUNCTION
-
V
V
REG
REG
0dB TO +20dB
0dB TO +20dB
SETTING
PGA
PGA
to 0x1F
0x0C
0x0D
0x0B
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
ADC
ADC
R
L
GAIN (dB)
+9
+8
+7
+6
+5
+4
+3
+2
+1
0
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