AK4612EQ Datasheet, PDF (45/68 Pages) Asahi Kasei Microsystems – 6/8-Channel Audio CODEC

[AK4612]
■ ύϫʔμ΢ϯػೳ
AK4612ͷADCͱDAC͸ύϫʔμ΢ϯϐϯ(PDN pin)Λ “L” ʹ͢Δ͜ͱͰύϫʔμ΢ϯͰ͖ɺ͜ͷͱ͖ಉ࣌ʹ
֤σΟδλϧϑΟϧλ͕Ϧηοτ͞Ε·͢ɻPDN = “L”Ͱ಺෦Ϩδελ஋͸ॳظԽ͞Ε·͢ɻύϫʔμ΢ϯϞ
ʔυ࣌ɺSDTO1-3, DZF1-2 pin͸ “L” ʹͳΓɺΞφϩάग़ྗ͸DVMPD pin = “L”ͷͱ͖VCOMిѹɺDVMPD pin
= “H”ͷͱ͖Hi-ZΛग़ྗ͠·͢ɻ͜ͷϦηοτ͸ిݯ౤ೖ࣌ʹඞͣҰ౓ߦͬͯԼ͍͞ɻADCͷ৔߹ɺύϫʔμ
΢ϯϞʔυ͕ղআ͞ΕΔͱ3ʙ4/fsޙɺॳظԽαΠΫϧ(518/fs)͕։࢝͞Ε·͢ɻͦͷͨΊɺग़ྗσʔλSDTO1-3
͸521ʙ522 x LRCKαΠΫϧ֬ޙఆ͠·͢ɻDACͷ৔߹ɺύϫʔμ΢ϯϞʔυ͕ղআ͞ΕΔͱ3ʙ4/fsޙɺॳ
ظԽαΠΫϧ(516/fs)͕։࢝͞Ε·͢ɻॳظԽதɺΞφϩάग़ྗ͸DVMPD pin = “L”Ͱ͋Ε͹VCOMిѹɺ
DVMPD pin = “H”Ͱ͋Ε͹Hi-ZΛग़ྗ͠·͢ɻFigure 44ʹύϫʔμ΢ϯͼٴύϫʔΞοϓ࣌ͷγʔέϯεྫΛ
ࣔ͠·͢ɻ
Power
PDN
(12)
ADC Internal
State
DAC Internal
State
(10)
3~4/fs
518/fs ⁽¹⁾
Init Cycle
516/fs (2)
Init Cycle
ADC In
(Analog)
ADC Out
“0”data (4)
(6)
(Digital)
DAC In
(Digital)
“0”data
DAC Out
(5)
(Analog)
Clock In
Don’t care
MCLK,LRCK,SCLK
DZF1/DZF2
External
Mute
(7)
10~11/fs(11)
Mute ON ⁽⁹⁾
Normal Operation
Power-down
Normal Operation
GD ⁽³⁾
Power-down
GD
GD(3)
“0”data
“0”data
GD
(7)
(7)
Don’t care
(7)
Don’t care
Mute ON
஫ɿ
(1) ADC͸ύϫʔμ΢ϯղআޙɺΞφϩά෦͕ॳظԽ͞Ε·͢ɻ
(2) DAC͸ύϫʔμ΢ϯղআޙɺΞφϩά෦͕ॳظԽ͞Ε·͢ɻ
(3) Ξφϩάೖྗʹର͢ΔσΟδλϧग़ྗɺσΟδλϧೖྗʹର͢ΔΞφϩάग़ྗ͸܈஗ԆΛ΋ͪ·͢ɻ
(4) ύϫʔμ΢ϯ࣌ADCग़ྗ͸ “0” σʔλͰ͢ɻ
(5) ύϫʔμ΢ϯ࣌DACग़ྗ͸ DVMPD pin = “L”Ͱ͋Ε͹VCOMిѹɺDVMPD pin = “H”Ͱ͋Ε͹Hi-ZͰ͢ɻ
(6) Ξφϩά෦ͷॳظԽऴྃ࣌ADCग़ྗʹҟԻ͕ग़ྗ͞Ε·͢ɻҟԻ͕໰୊ʹͳΔ৔߹͸σΟδλϧग़ྗΛ
ϛϡʔτͯ͠Լ͍͞ɻ
(7) PDN pinͷཱͪԼ͕ΓΤοδɺͼٴPDN pinͷ্ཱ͕ͪΓΤοδͷ519∼520/fsͰޙҟԻ͕ग़ྗ͞Ε·͢ɻ
(8) ύϫʔμ΢ϯঢ়ଶ(PDN pin = “L”)Ͱ͸ɺDZF1-2 pin͸ “L” ʹͳΓ·͢ɻ
(9) ҟԻ(7)͕໰୊ʹͳΔ৔߹͸Ξφϩάग़ྗΛ֎෦Ͱϛϡʔτͯ͠Լ͍͞ɻ
(10) PDN pin Λ “H”ʹ͔ͯ͠ΒॳظԽαΠΫϧ͕։࢝͢Δ·Ͱ3∼4/fs͔͔Γ·͢ɻ
(11) PDN pin Λ “H”ʹ͔ͯ͠Β10∼11/fsͷؒ͸DZF= “L”Ͱ͢ɻ
(12) PDN pin = “L”ͷঢ়ଶͰిݯΛ౤ೖ͠ɺ͢΂ͯͷిޙ্ཱ͕͕ͨͬͪݯɺPDN pinΛ“H”ʹ͍ͯͩ͘͠͞ɻ
Figure 44. ϐϯύϫʔμ΢ϯʗϐϯύϫʔΞοϓγʔέϯεྫ
MS1039-J-01
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2009/06