AK4633 Datasheet, PDF (39/82 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4633]
„ Digital Block
Digital Block is composed as Figure 32.The recording and playback single 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-03
- 39 -
2006/04