AK4589 Datasheet, PDF (38/76 Pages) Asahi Kasei Microsystems – 2/8 CHANNEL AUDIO CODEC WITH DIR

ASAHI KASEI
[AK4589]

DAC ݸผύϫʔμ΢ϯػೳ

AK4589 Ͱ͸ DAC ύϫʔμ΢ϯϏοτ PD1-4 bit ʹΑΓݸผʹύϫʔμ΢ϯΛ͢Δ͜ͱ͕Ͱ͖·͢ɻύϫʔ
μ΢ϯϏοτ͕ “1”ͷͱ͖ɺ֘౰͢Δ DAC ͷΞφϩά෦͸ύϫʔμ΢ϯ͠·͕͢ɺσΟδλϧ෦͸ύϫʔμ
΢ϯ͞Ε·ͤΜɻݸผύϫʔμ΢ϯϏοτʹΑΓશύϫʔμ΢ϯΛઃఆͯ͠΋ɺσΟδλϧ෦͸ಈ࡞ͭͮ͠
͚·͢ɻPD1-4 bit ʹΑΓύϫʔμ΢ϯ͞Εͨ DAC ͷΞφϩάग़ྗ͸ VCOM ిѹʹͳΓɺDZF ݕग़͸ߦͬͯ
͍·͕͢ɺDZF ݕग़݁Ռ͸ DZF1-2 pin ʹ൓ө͞Εͳ͘ͳΓ·͢ɻύϫʔμ΢ϯͷઃఆɾղআͷ྆ํͰҟԻ͕
ੜ͡ΔͨΊɺ໰୊ʹͳΔ৔߹͸֎෦Ͱϛϡʔτɺ΋͘͠͸ PWDAN bit = “0”·ͨ͸ RSTN1 bit = “0”ͷ࣌ʹ
PD1-4 bit ͷઃఆΛߦ͍ͬͯͩ͘͞ɻFigure 16 ʹ PD1-4 bit ʹΑΔύϫʔμ΢ϯͼٴύϫʔΞοϓ࣌ͷγʔέ
ϯεΛࣔ͠·͢ɻ
PD1-4 bit
Power Down Channel
DAC Digital
Internal State
Normal Operation
DAC Analog
Internal State
Normal Operation
Power-down
Normal Operation
Power-down NormNaloOrmpaelraOtipoenration
DAC In
(Digital)
DAC Out
(Analog)
(1)
GD
(3) ₍₂₎
“0”data
(3)
8192/fs
GD
(3) ₍₂₎ (3)
DZF Detect
Internal State
(4)
(4)
Normal Operation Channel
DAC In
(Digital)
“0”data
GD
GD
DAC Out
(Analog)
8192/fs
DZF Detect
Internal State
Clock In
MCLK,LRCK1,
BICK1
(5)
DZF1/DZF2
(6)
஫ɿ
(1) σΟδλϧೖྗʹର͢ΔΞφϩάग़ྗ͸܈஗Ԇ(GD)Λ΋ͪ·͢ɻ
(2) PD1-4 bit Ͱύϫʔμ΢ϯ͞Εͨ DAC ͷΞφϩάग़ྗ͸ VCOM ిѹͰ͢ɻ
(3) PD1-4 bit ΛมԽͤͨ͞௚ޙɺPD bit ΛมԽͤͨ͞ DAC ͷग़ྗʹ͸ҟԻ͕ग़ྗ͞Ε·͢ɻ
(4) ύϫʔμ΢ϯ͞Εͨ DAC Ͱ͸ DZF ݕग़͸ߦ͍ͬͯ·͕͢ɺݕग़݁Ռ͸ DZF1-2 pin ʹ͸൓ө͞Ε·
ͤΜɻ
(5) ύϫʔμ΢ϯઃఆʹΑΓɺύϫʔμ΢ϯ͞Εͨ DAC ͷ DZF ݕग़݁Ռ͕ແࢹ͞ΕɺDZF1-2 pin ͕”H”
ʹͳΓ·͢ɻ
(6) ύϫʔμ΢ϯΛߦΘͳ͍ DAC ʹೖྗ͕͋Δ৔߹ʹɺݸผύϫʔμ΢ϯΛߦͬͯ΋ DZF1-2 pin ͸”H”
ʹ͸ͳΓ·ͤΜɻҟԻ͕໰୊ʹͳΔ৔߹ʹ͸Ξφϩάग़ྗΛ֎෦Ͱϛϡʔτ͍ͯͩ͘͠͞ɻ
Figure 16. DAC ݸผύϫʔμ΢ϯྫ
MS0339-J-00
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2004/09