MAX98090BEWJ+T Maxim Integrated, MAX98090BEWJ+T Datasheet - Page 93

• Manufacturer Part Number: MAX98090BEWJ+T
• Description: Interface - CODECs 5V 130mW Stereo Headphone Amp
• Manufacturer: Maxim Integrated

MAX98090
Audio Record Path
The device record path comprises several sequential
blocks. The first block is a stereo ADC with configurable
mixers that can accept input from the microphone PGAs,
line input PGAs, or directly differentially from any of the
Figure 12. Record Path Block Diagram
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DIGITAL MIC DATA
IN1-IN2
IN3-IN4
IN5-IN6
IN1-IN2
IN3-IN4
IN5-IN6
LINE A
LINE B
LINE A
LINE B
MIC 1
MIC 2
MIC 1
MIC 2
MIXER
MIXER
RIGHT
LEFT
ADC
ADC
ADREN
ADLEN
MIXADR[6:0]
MIXADL[6:0]
ADCDITHER
LEFT
RIGHT
ADC
OSR128
ADCHP
ADC
DMDR
DMDL
ADCR
ADCL
DIGMICR
DIGMICL
TECHNOLOGY DSP
DIGITAL
DIGITAL
RIGHT
MUX
MUX
LEFT
MIC
MIC
FLEXSOUND
FILTERS
FILTERS
MODE
RIGHT
AHPF
LEFT
analog input pairs. Internally, the digital record path has
two channels (left and right), which accept a digital signal
either from the appropriate digital microphone or ADC
output channel. The two channels then pass through sev-
eral DSP stages before being routed into the digital audio
interface (DAI, Figure 12).
DHF
Ultra-Low Power Stereo Audio Codec
RIGHT RECORD PATH
LEFT RECORD PATH
REC_B0[23:0]
REC_B1[23:0]
REC_B2[23:0]
REC_A1[23:0]
REC_A2[23:0]
RECBQEN
AVBQ[3:0]
BIQUAD
BIQUAD
FILTER
FILTER
RIGHT
LEFT
PLAYBACK PATH
SIDETONE
SIDETONE
SIDETONE TO
DSTS[1:0]
RIGHT
LEFT
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RIGHT
LEVEL
LEVEL
AVRG[2:0]
L/R ST
LEVEL
AVLG[2:0]
DVST[3:0]
LEFT
AVR[3:0]
AVL[3:0]
DAI