AK4631 Datasheet, PDF (64/69 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4631]
„ ϞϊϥϧϥΠϯΞ΢τग़ྗ

1. ֎෦ϛϡʔτճ࿏࢖༻࣌(AK4536/AK4630 )׵ޓ
FS3-0 bits _XXXX
(Addr:05H,
D5,D2-0)
(1)
DACA bit
(2)
(Addr:02H, D4)
(3)
DVOL7-0 bits
(Addr:0AH, D7-0)
00011000
PMDAC bit
(Addr:00H, D2)
(4)
PMAO bit
(Addr:00H, D3)
AOUT pin
Hi-Z
XXXX
XXXXXXX
Normal Output
Example:
PLL, Master Mode
Audio I/F Format :DSP Mode, BCKP=MSBS= “0”
Sampling Frequency: 8kHz
Digital Volume: -8dB
(1) Addr:05H, Data:00H
(6)
(2) Addr:02H, Data:10H
(3) Addr:0AH, Data:28H
(4) Addr:00H, Data:4CH
(5)
Playback
Hi-Z
(5) Addr:00H, Data:40H
Figure 50. Mono Lineout Sequence
(6) Addr:02H, Data:00H
<खॱྫ>
ʮΫϩοΫͷઃఆʯͷ߲Λࢀর͠ɺΫϩοΫΛͯ͠څڙԼ͍͞ɻ
(1) αϯϓϦϯάप೾਺(FS3-0 bit)Λઃఆͯ͠Լ͍͞ɻPLLϞʔυͷ৔߹ɺαϯϓϦϯάप೾਺Λมߋ͔ͯ͠Βͷ
PLLϩοΫ࣌ؒΛߟྀ͠ɺ(4)ͷDACͼٴϞϊϥϧϥΠϯΞ΢τΞϯϓͷύϫʔΞοϓΛߦͬͯԼ͍͞ɻ
(2) DAC → ϞϊϥϧϥΠϯΞϯϓͷύεͷઃఆɻ
DACA bit: “0” → “1”
(3) σΟδλϧϘϦϡʔϜ(ΞυϨε0AH)ͷઃఆɻ
DAC͕ύϫʔΞοϓ͞ΕͨޙɺDefault஋ (0dB) ͔Βઃఆͨ͠஋ʹιϑτભҠ͍͖ͯ͠·͢ɻ
(4) DACͼٴϞϊϥϧϥΠϯΞϯϓͷύϫʔΞοϓ : PMDAC bit = PMAO bit = “0” → “1”
DACͼٴϞϊϥϧϥΠϯΞϯϓύϫʔΞοϓ࣌ɺAOUT pin ͔ΒϙοϓԻ͕ൃੜ͠·͢ͷͰɺ֎෦Ͱϛϡʔτ
ͯ͠Լ͍͞ɻ
(5) DACͼٴϞϊϥϧϥΠϯΞϯϓͷύϫʔμ΢ϯ: PMDAC bit = PMAO bit = “1” → “0”
DACͼٴϞϊϥϧϥΠϯΞϯϓύϫʔμ΢ϯ࣌ɺAOUT pin ͔ΒϙοϓԻ͕ൃੜ͠·͢ͷͰɺ֎෦Ͱϛϡʔτ
ͯ͠Լ͍͞ɻ
(6) DAC → ϞϊϥϧϥΠϯΞϯϓͷύεͷDisableɻ
DACA bit: “1” → “0”
MS0317-J-01
- 64 -
2004/11