MAX9853 Maxim Integrated Products, MAX9853 Datasheet - Page 54

• Manufacturer Part Number: MAX9853
• Description: (MAX9851 / MAX9853) Stereo Audio CODECs
• Manufacturer: Maxim Integrated Products

Stereo Audio CODECs with Microphone, DirectDrive
Headphones, Speaker Amplifiers, or Line Outputs
PGAS configures the volume of the sidetone signal that
feeds into the audio output mixer. As the sidetone sig-
nal is routed from the left microphone input, this volume
Table 29. Sidetone Gain Bit Descriptions
Table 30. Sidetone Volume Control Settings
Table 31. Headphone/Receiver Gain Bit Descriptions
54
REG
0x13
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REG
0x14
0x15
PGAS
0x0A
0x0B
0x0C
0x0D
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0E
0x0F
B7
0
Sidetone Volume Control (PGAS)
B7
0
0
B6
0
HRMUT
Audio Volume Control Registers (0x13, 0x14, 0x15, 0x16, 0x17)
B6
0
SETTING (dB)
+30
+28
+26
+24
+22
+20
+18
+16
+14
+12
+10
+8
+6
+4
+2
0
B5
0
B5
B4
B4
control is in addition to the gain setting of the left micro-
phone input. Code 0x00 is maximum gain while 0x1F is
maximum attenuation. Table 30 lists the gain setting for
each code.
B3
PGAS
0x1C
0x1D
0x1A
0x1B
0x1E
B3
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1F
HRVOLR
HRVOLL
PGAS
B2
B2
B1
SETTING (dB)
B1
-10
-12
-14
-16
-18
-20
-22
-24
-26
-28
-30
-32
-2
-4
-6
-8
B0
B0