AK4633EN Datasheet, PDF (39/83 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

[AK4633]
■ Digital Block
Digital Block is composed as shown in Figure 32. The recording and playback signal paths are selected by ADCPF bit,
PFDAC bit and PFSDO bit (Figure 32~ Figure 35, Table 19)
PMADC bit
ADC
SDTI
HPFAD bit
1st Order
HPF
PMPFIL bit
HPF bit
“1” “0”
ADCPF bit
1st Order
HPF
EQ2-1 bits
2 Band
EQ
“0” “1”
PFSDO bit
SDTO
ALC
(Volume)
“1” “0”
PMDAC bit
PFDAC bit
DATT
SMUTE
DAC
(1) ADC: Include the Digital Filter(LPF) for ADC as shown in “FILTER CHRACTERISTICS”.
(2) DAC: Include the Digital Filter(LPF) for DAC as shown in “FILTER CHRACTERISTICS”.
(3) HPF: High Pass Filter. Enable to use for a Wind-Noise Reduction Filter. (See “Programmable Filter”)
(4) EQ: using for an Equalizer or Notch Filter. (See “Programmable Filter”)
(5) Volume: Digital Volume with ALC function. (See “Digital Volume” or “ALC”)
(6) DATT: 4 steps Digital Volume for playback path.( See “Output Digital Volume2”)
(7) SMUTE: Soft mute.
Figure 32. Digital block path
MS0447-E-06
- 39 -
2015/10