max9856 Maxim Integrated Products, Inc., max9856 Datasheet - Page 30

• Manufacturer Part Number: max9856
• Description: Max9856 Low-power Audio Codec With Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

Low-Power Audio CODEC with
DirectDrive Headphone Amplifiers
The MAX9856 has two main analog mixers. The first
feeds signals into the headphone and line output
amplifiers while the second supplies the ADC input.
Table 11. Audio Mixer Control Registers
Audio Mixer Register Bit Description
30
______________________________________________________________________________________
MXOUTL/MXOUTR
REG
0x0E
0x0F
0x10
MXINL/MXINR
BITS
B7
0
0
B6
0
0
Analog Mixers
MXOUTL
MXOUTL OR MXOUTR
MXINL OR MXINR
B5
0
0
1XXXX
X1XXX
XX1XX
XXX1X
XXXX1
00000
1XXX
X1XX
XX1X
XXX1
0000
AUDIO OUTPUT MIXER DESCRIPTION
ADC INPUT MIXER DESCRIPTION
B4
Each mixer is configurable independently for left and
right channels. See Table 11 for audio mixer control
registers and register bit description.
FUNCTION
B3
MXINL
MXINR
SELECTED INPUT SOURCE
SELECTED INPUT SOURCE
MIC L/R PGA output selected
B2
No input source selected
No input source selected
DAC output selected
MXOUTR
AUXOUT selected
LINEIN1 selected
LINEIN2 selected
LINEIN1 selected
LINEIN2 selected
MICR selected
MICL selected
B1
B0