MAX98090BEWJ+T Maxim Integrated, MAX98090BEWJ+T Datasheet - Page 96

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

MAX98090
Figure 14. Record Path FlexSound Technology DSP Block
Table 27. DSP Filter Configuration Register
www.maximintegrated.com
BIT
DIGITAL MIC DATA
7
6
5
4
3
2
1
0
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
ADDRESS: 0x26
MIXER
MIXER
NAME
MODE
RIGHT
AHPF
DHPF
LEFT
ADC
ADC
DHF
—
—
—
—
ADREN
ADLEN
MIXADR[6:0]
MIXADL[6:0]
TYPE
R/W
R/W
R/W
R/W
ADCDITHER
LEFT
RIGHT
—
—
—
—
ADC
OSR128
ADCHP
ADC
POR
—
—
—
—
1
0
0
0
DMDR
DMDL
ADCR
ADCL
Enables the Codec DSP FIR Music Filters (Default IIR Voice Filters)
Enables the Record Path DC-Blocking Filter
Enables the Playback Path DC-Blocking Filter
Enables the DAC High Sample Rate Mode (LRCLK > 50kHz, FIR Only)
0: The codec DSP filters operate in IIR voice mode with stop band frequencies below
the f
application use.
1: The codec DSP filters operate in a linear phase FIR audio mode optimized to
maintain stereo imaging and operate at higher f
0: DC-blocking filter disabled.
1: DC-blocking filter enabled.
0: DC-blocking filter disabled.
1: DC-blocking filter enabled.
0: LRCLK is less than 50kHz. 8x FIR interpolation filter used.
1: LRCLK is greater than 50kHz. 4x FIR interpolation filter used.
S
/2 Nyquist rate. The voice mode filters are optimized for 8kHz or 16kHz voice
DIGMICR
DIGMICL
TECHNOLOGY DSP
DIGITAL
DIGITAL
RIGHT
MUX
MUX
LEFT
MIC
MIC
FLEXSOUND
FILTERS
FILTERS
MODE
RIGHT
AHPF
LEFT
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]
DESCRIPTION
RECBQEN
AVBQ[3:0]
BIQUAD
BIQUAD
FILTER
FILTER
RIGHT
LEFT
—
—
—
—
PLAYBACK PATH
S
SIDETONE
SIDETONE
rates while utilizing lower power.
SIDETONE TO
DSTS[1:0]
RIGHT
LEFT
Maxim Integrated │ 96
RIGHT
LEVEL
LEVEL
AVRG[2:0]
L/R ST
LEVEL
AVLG[2:0]
DVST[3:0]
LEFT
AVR[3:0]
AVL[3:0]
DAI