AK4679EG Datasheet, PDF (67/220 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with DSP and MIC/RCV/HP/SPK/LINE-AMP

[AK4679]
1. ADC: Include the Digital Filter (LPF) for ADC as shown in “FILTER CHRACTERISTICS”.
2. HPF1: Include the Digital Filter (HPF) for ADC as shown in “FILTER CHRACTERISTICS”.
3. DAC: Include the Digital Filter (LPF) for DAC as shown in “FILTER CHRACTERISTICS”.
4. HPF2: High Pass Filter. Applicable to use as Wind-Noise Reduction Filter. (See “Digital Programmable Filter”.)
5. LPF: Low Pass Filter (See “Digital Programmable Filter”.)
6. Stereo Separation: Stereo Separation Emphasis Filter & Gain Compensation. (See “Digital Programmable Filter”.)
Gain Compensation is composed with EQ0 and Gain blocks. This block adjusts the frequency response after Stereo
Separation Emphasis.
7. 3-Band Notch: Applicable to use as Equalizer or Notch Filter. (See “Digital Programmable Filter”.)
8. ALC: Input Digital Volume with ALC function. (See “Input Digital Volume” and “ALC Operation”.)
9. SVOLA: Side Tone Volume at Internal MIC/SPK or External Headset Phone Call. (See “Side Tone Volume”.)
10. 5-Band EQ: Equalizer for playback path. (See “5-band Equalizer”.)
11. DATT-A: Digital Volume for playback path. (See “Digital Output Volume”.)
12. SMUTE: Soft mute. (See “Soft Mute”.)
13. DRC: Dynamic Range Control for playback path. (See “Dynamic Range Control”.)
14. DATT-B: Digital Volume for Recording of Received Voice. (See “Digital Volume for Recording of Received
Voice”)
15. DATT-C: Digital Volume of Received Voice. (See “Digital Volume for Received Voice”)
16. SVOLB: Side Tone Volume at B/T Headset Phone Call. (See “Side Tone Volume for B/T Phone Call”.)
MS1402-E-06
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2013/02