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AK4589 Datasheet, PDF (35/76 Pages) Asahi Kasei Microsystems – 2/8 CHANNEL AUDIO CODEC WITH DIR
ASAHI KASEI
[AK4589]
ιϑτϛϡʔτػೳ
ιϑτϛϡʔτ͸σΟδλϧతʹ࣮ߦ͞Ε·͢ɻSMUTE bitΛ “1” ʹ͢Δͱͦͷ࣌఺ͷATTઃఆ஋͔ΒATT
ઃఆ஋×ATTભҠ࣌ؒ (Table 16)Ͱೖྗσʔλ͕-∞ (“0”)·ͰΞςωʔγϣϯ͞Ε·͢ɻSMUTE bitΛ “0” ʹ͢
Δͱɺ-∞͔ΒATTઃఆ஋×ATTભҠ࣌ؒͰATTઃఆ஋·Ͱ෮͢·͠ؼɻιϑτϛϡʔτ։࢝ޙɺ-∞·ͰΞςω
ʔγϣϯ͞ΕΔલʹղআ͞ΕΔͱΞςωʔγϣϯ͕தஅ͞Εɺಉ͡αΠΫϧͰATTઃఆ஋·Ͱ෮͢·͠ؼɻ
ιϑτϛϡʔτػೳ͸৴߸ΛࢭΊͣʹ৴߸ݯΛ੾Γସ͑Δ৔߹ͳͲʹ༗ޮͰ͢ɻ
SMUTE bit
ATT Level
(1)
Attenuation
(1)
(3)
-∞
GD
GD
(2)
AOUT
DZF1,2
(4)
8192/fs
஫:
(1)ATTઃఆ஋×ATTભҠ࣌ؒ (Table 16) ɻྫ͑͹ɺMode 0࣌ɺATTઃఆ஋͕ “00H”ͷ৔߹͸1792/fsαΠΫ
ϧͰ͢ɻιϑτϛϡʔτͰભҠ͢ΔATT஋͸00Hʙ7FHͰ͢ɻ
(2)σΟδλϧೖྗʹରͯ͠Ξφϩάग़ྗ͸܈஗Ԇ(GD)Λ࣋ͪ·͢ɻ
(3)ιϑτϛϡʔτ։࢝ޙɺ-∞·ͰΞςωʔγϣϯ͞ΕΔલʹղআ͞ΕΔͱΞςωʔγϣϯ͕தஅ͞Εɺಉ
͡αΠΫϧͰATTઃఆ஋·Ͱ෮͢·͠ؼɻ
(4)άϧʔϓͷશνϟωϧͷೖྗσʔλ͕8192ճ࿈ଓͯ͠ “0” ͷ৔߹ɺDZF pin͸ “H” ʹͳΓ·͢ɻ
ͦͷޙάϧʔϓͷ͍ͣΕ͔ͷνϟωϧͷೖྗσʔλ͕ “0” Ͱͳ͘ͳΔͱɺDZF pin͸ “L” ʹͳΓ·͢ɻ
Figure 13. ιϑτϛϡʔτػೳͱθϩݕग़ػೳ
 γεςϜϦηοτ
ݯిON ࣌ʹ͸ɺPDN pinʹҰ౓ “L” Λೖྗͯ͠Ϧηοτͯ͠Լ͍͞ɻϦηοτͼٴύϫʔμ΢ϯ͸ MCLK
Ͱղআ͞Εɺͦͷ ޙLRCK1 ͷ “↑” ʹಉ಺ͯ͠ظ෦ճ࿏͕ύϫʔΞοϓ͠ɺ಺෦ͷλΠϛϯά͕ಈ࡞͠·͢ɻ
LRCK1 ͕ೖྗ͞ΕΔ·Ͱύϫʔμ΢ϯঢ়ଶͰ͢ɻ
MS0339-J-00
- 35 -
2004/09