AK4631 Datasheet, PDF (65/69 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4631]
2. AK4631 ಺ଂͷϙοϓԻ௿ݮճ࿏࢖༻࣌
FS3-0 bits
(Addr:05H,
D5, D2-0)
XXXX
(1)
DACA bit
(2)
(Addr:02H, D4)
DVOL7-0 bits
(Addr:0AH, D7-0)
AOPSN bit
(Addr:03H, D6)
PMDAC bit
(Addr:00H, D2)
PMAO bit
(Addr:00H, D3)
00011000
AOUT pin
XXXX
(9)
(3)
XXXXXXX
(4)
(6)
(7)
(10)
(5)
>300 ms
Normal Output
(8)
>300 ms
Figure 51. Mono Lineout Sequence
Example:
PLL, Master Mode
Audio I/F Format :DSP Mode, BCKP=MSBS= “0”
Sampling Frequency: 8kHz
Digital Volume: -8dB
MGAIN1=SPKG1=SPKG0=BEEPA=ALC1M
=ALC1A= “0”
(1) Addr:05H, Data:00H
(2) Addr:02H, Data:10H
(3) Addr:0AH, Data:28H
(4) Addr:03H, Data:40H
(5) Addr:00H, Data:4CH
(6) Addr:03H, Data:00H
Playback
(7) Addr:03H, Data:40H
(8) Addr:00H, Data:40H
(9) Addr:02H, Data:00H
(10) Addr:03H, Data:00H
<खॱྫ>
ʮΫϩοΫͷઃఆʯͷ߲Λࢀর͠ɺΫϩοΫΛͯ͠څڙԼ͍͞ɻ
(1) αϯϓϦϯάप೾਺(FS3-0 bit)Λઃఆͯ͠Լ͍͞ɻ



PLLϩοΫ࣌ؒΛߟྀ͠ɺ(5)ͷDAC ͷύϫʔΞοϓΛߦͬͯԼ͍͞ɻ
(2) DAC → ϞϊϥϧϥΠϯΞϯϓͷύεͷઃఆɻ DACA bit: “0” → “1”
(3) σΟδλϧϘϦϡʔϜ(ΞυϨε0AH)ͷઃఆɻ
DAC͕ύϫʔΞοϓ͞ΕͨޙɺDefault஋ (0dB) ͔Βઃఆͨ͠஋ʹιϑτભҠ͍͖ͯ͠·͢ɻ
(4) AOUT ΛύϫʔηʔϒϞʔυ΁Ҡߦɻ AOPSN bit: “0” → “1”
(5) DACͼٴϞϊϥϧϥΠϯΞϯϓͷύϫʔΞοϓ : PMDAC bit = PMAO bit = “0” → “1”
AOUT pin ্ཱ͕͕ͪΓ࢝Ί·͢ɻ্ཱ͕ͪΓ࣌ؒ͸ C = 1µF ͷͱ͖ɺ max 300ms Ͱ͢ɻ
(6) AOUT ͷύϫʔηʔϒϞʔυͷղআɻ AOPSN bit: “1” → “0”
AOUT ޙ্ཱ͕͕ͨͬͪɺઃఆΛߦ͍ͬͯͩ͘͞ɻઃఆޙɺAOUT pin ͔ΒͷԻ੠ग़ྗ͕։࢝͞Ε·͢ɻ
(7) AOUT ΛύϫʔηʔϒϞʔυ΁Ҡߦɻ AOPSN bit: “0” → “1”
(8) DACͼٴϞϊϥϧϥΠϯΞϯϓͷύϫʔμ΢ϯ: PMDAC bit = PMAO bit = “1” → “0”
AOUT pin ཱ͕ͪԼ͕Γ࢝Ί·͢ɻཱͪԼ͕Γ࣌ؒ͸C = 1µF ͷͱ͖ɺ max 300ms Ͱ͢ɻ
(9) DAC Æ ϞϊϥϧϥΠϯΞϯϓͷύεͷDisableɻ
DACA bit: “1” → “0”
(10) AOUT ͷύϫʔηʔϒϞʔυͷղআɻ AOPSN bit: “1” → “0”
AOUT ཱ͕ͪԼ͕ͬͨޙɺઃఆΛߦ͍ͬͯͩ͘͞ɻ
MS0317-J-01
- 65 -
2004/11