AK4612EQ Datasheet, PDF (46/68 Pages) Asahi Kasei Microsystems – 6/8-Channel Audio CODEC

[AK4612]
AK4612ͷADCͱDAC͸PMVR bit = “1” ͷͱ͖PMADC bitͱPMDAC bitͰͦΕͧΕಠཱʹύϫʔμ΢ϯͰ͖·
͢ɻ·ͨɺADC1-3͸PMAD1-3 bitͰͦΕͧΕಠཱʹύϫʔμ΢ϯ͕Ͱ͖ɺDAC1-4͸PMDA1-4 bitͰͦΕͧΕ
ಠཱʹύϫʔμ΢ϯ͕Ͱ͖·͢ɻ͜ͷͱ͖Ϩδελ஋͸ॳظԽ͞Ε·ͤΜɻPMADC = “0”ͷͱ͖SDTO1-3 pin
͸ “L” ʹͳΓ·͢ɻPMDAC = “0”ͷͱ͖ɺΞφϩάग़ྗ͸DVMPD pin = “L”Ͱ͋Ε͹VCOMిѹɺDVMPD pin
= “H”Ͱ͋Ε͹Hi-ZΛग़ྗ͠DZF1-2 pin͸ “H” ʹͳΓ·͢ɻ͜ͷͱ͖ҟԻ͕ੜ͡ΔͷͰɺ໰୊ʹͳΔ৔߹͸֎
෦Ͱϛϡʔτͯ͠Լ͍͞ɻFigure 45ʹύϫʔμ΢ϯͼٴύϫʔΞοϓ࣌ͷγʔέϯεྫΛࣔ͠·͢ɻ
PMVR bit
PMADC/PMDAC bit
ADC Internal
State
DAC Internal
State
ADC In
(Analog)
ADC Out
(Digital)
DAC In
(Digital)
DAC Out
(Analog)
Clock In
MCLK,LRCK,SCLK
DZF1/DZF2
4~5/fs (10)
Normal Operation
Power-down
Normal Operation
GD ⁽³⁾
Power-down
(4)
“0”data
“0”data
GD(3)
(7)
(5)
Don’t care
(8)
3~4/fs (11)
518/fs ⁽¹⁾
Init Cycle
516/fs (2)
Init Cycle
Normal Operation
Normal Operation
GD
(6)
GD
(7)
8∼9/fs (12)
External
Mute
(9)
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) PMDAC bit ʹ“0”Λॻ͖ࠐΜͰ͔Β4~5/fsޙɺͼٴPMDAC bit ʹ“1”Λॻ͖ࠐΜͰ͔Β519∼520/fsͰޙҟ
Ի͕ग़ྗ͞Ε·͢ɻ
(8) ύϫʔμ΢ϯঢ়ଶ(PMDAC bit = “0”)Ͱ͸ɺDZF1-2 pin͸ “H” ʹͳΓ·͢ɻ
(9) ҟԻ(7)͕໰୊ʹͳΔ৔߹͸Ξφϩάग़ྗΛ֎෦Ͱϛϡʔτͯ͠Լ͍͞ɻ
(10) PMADC bitʹ “0”Λॻ͖ࠐΜͰ͔Β֘౰͢ΔADC͕ύϫʔμ΢ϯ͢Δ·Ͱ4~5/fs ͔͔Γ·͢ɻ
PMDAC bitʹ “0”Λॻ͖ࠐΜͰ͔Β֘౰͢ΔDAC͕ύϫʔμ΢ϯ͢Δ·Ͱ4~5/fs ͔͔Γ·͢ɻ
(11) PMADC bit ͼٴPMDAC bitΛ “1”ʹ͔ͯ͠ΒॳظԽαΠΫϧ͕։࢝͢Δ·Ͱ3∼4/fs͔͔Γ·͢ɻ
(12) PMDAC bitʹ“1”Λॻ͖ࠐΜͰ͔Β8~9/fs ޙ“L” ʹͳΓ·͢ɻ
Figure 45. Ϗοτύϫʔμ΢ϯʗϏοτύϫʔΞοϓγʔέϯεྫ
MS1039-J-01
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2009/06