AK4645AEZ Datasheet, PDF (81/85 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP

[AK4645A]
■ ϔουϑΥϯग़ྗ
FS3-0 bits _0,000
(Addr:05H, D5&D2-0)
DACH bit
(Addr:0FH, D0)
(1)
(2)
BST1-0 bits
(Addr:0EH, D3-2)
IVL/R7-0 bits
(Addr:09H&0CH, D7-0)
00
E1H
(3)
(4)
DVL/R7-0 bits
(Addr:0AH&0DH, D7-0)
PMDAC bit
(Addr:00H, D2)
18H
(5)
(6)
0,010
10
91H
28H
E x a m p le :
S am p lin g F re q u e n c y: 4 4 .1 k H z
D V O L C b it = “1 ”(d e fa u lt)
D ig ita l V o lum e L e ve l: − 8 d B
B a ss B o o st L e ve l: M id d le
D e-em phases response: O F F
S o ft M u te T im e : 2 5 6 /fs
(13)
00
(12)
(1 ) A d d r:0 5 H , D a ta :27 H
(2 ) A d d r:0 F H , D a ta 0 9 H
(3) A ddr:0E H , D ata 19 H
(4) A ddr:09H & 0C H , D ata 9 1H
(5 ) A d d r:0 A H & 0 D H , D a ta 2 8 H
(6 ) A d d r:0 0 H , D a ta 64 H
(11)
(7 ) A d d r:01 H , D a ta 39 H
(8 ) A d d r:0 1 H , D a ta 79 H
PMMIN bit
(Addr:00H, D5)
P la yb a c k
PMHPL/R bits
(Addr:01H, D5-4)
(7)
(10)
(9 ) A d d r:0 1 H , D a ta 39 H
(1 0 ) A d d r:0 1H , D a ta 0 9 H
HPMTN bit
(Addr:01H, D6)
(8)
(9)
(1 1 ) A d d r:0 0H , D a ta 4 0 H
HPL/R pins
Normal Output
(1 2 ) A d d r:0 E H , D a ta 1 1H
(1 3 ) A d d r:0 F H , D ata 0 8H
Figure 72. Headphone-Amp Output Sequence
<खॱྫ>
ʮΫϩοΫͷઃఆʯͷ߲Λࢀর͠ɺΫϩοΫΛͯ͠څڙԼ͍͞ɻ
(1) αϯϓϦϯάप೾਺(FS3-0 bits)Λઃఆͯ͠Լ͍͞ɻ
(2) DAC Æ HP-Ampͷύεઃఆ: DACH bit = “0” → “1”
(3) όεϒʔετϨϕϧ(BST1-0 bits)ͷઃఆɻ
(4) ೖྗσΟδλϧϘϦϡʔϜ(ΞυϨε09H&0CH)ͷઃఆ
PMADL = PMADR bits = “0”ͷͱ͖IVL7-0 = IVR7-0 bits = “91H”(0dB)ʹઃఆͯ͠Լ͍͞ɻ
(5) ग़ྗσΟδλϧϘϦϡʔϜ(ΞυϨε0AH&0DH)ͷઃఆɻ
DVOLC bit = “1”(default)ͷͱ͖ɺDVL7-0bits(0AH)ͰLch͓ΑͼRchͷ྆ํͷϘϦϡʔϜΛઃఆ͠·
͢ɻDAC͕ύϫʔΞοϓ͞ΕͨޙɺDefault஋(0dB)͔Βઃఆͨ͠஋ʹιϑτભҠ͍͖ͯ͠·͢ɻ
(6) DAC͓ΑͼMIN-AmpͷύϫʔΞοϓ: PMDAC = PMMIN bits = “0” → “1”
ظॳԽαΠΫϧத(1059/fs=24ms@fs=44.1kHz)ɺDACೖྗσʔλ͸಺෦Ͱ2’sίϯϓϦϝϯτͷ “0”ʹ
ݻఆ͞Ε·͢ɻॳظԽαΠΫϧ͕ऴྃ͢ΔͱɺDACͷ܈஗Ԇ(25/fs =0.5ms@fs=44.1kHz)ܦաޙɺDAC
ग़ྗ͸σΟδλϧೖྗ৴߸ʹ૬౰͢ΔిѹʹͳΓ·͢ɻPMADL bit·ͨ͸PMADR bit͕ “1”ͷͱ͖ɺ
DACͷॳظԽαΠΫϧ͸͋Γ·ͤΜɻALC bit = “1”ͷ৔߹ɺॳظԽαΠΫϧத(1059/fs = 24ms
@fs=44.1kHz)ɺALC͸σΟηʔϒϧঢ়ଶ(ALCͷήΠϯ͸IVL/R7-0 bitsͷઃఆ)ͰɺॳظԽαΠΫϧ͕
ऴྃ͢ΔͱALC͸IVL/R7-0 bitsͷઃఆ͔Βಈ࡞Λ։࢝͠·͢ɻ
(7) ϔουϑΥϯΞϯϓͷύϫʔΞοϓ: PMHPL = PMHPR bits = “0” → “1”
ग़ྗ͸HVSSͷ··Ͱ͢ɻ
(8) ϔουϑΥϯΞϯϓͷίϞϯిѹ্ཱͪ͛: HPMTN bit = “0” → “1”
্ཱͪ͛࣌ؒ͸MUTET pinͷίϯσϯαͷ༰ྔͱHVDDͰܾ·Γ·͢ɻMUTET pinͷίϯσϯαC
= 1μF, HVDD=3.3Vͷ࣌ͷ࣌ఆ਺͸τr =100ms(typ), 250ms(max)Ͱ͢ɻ
(9) ϔουϑΥϯΞϯϓͷίϞϯిѹཱͪԼ͛: HPMTN bit = “1” → “0”
্ཱͪ͛࣌ؒ͸MUTET pinͷίϯσϯαͷ༰ྔͱHVDDͰܾ·Γ·͢ɻMUTET pinͷίϯσϯαC
= 1μF, HVDD=3.3Vͷ࣌ͷ࣌ఆ਺͸τf =100ms(typ), 250ms(max)Ͱ͢ɻ
ίϞϯిѹ͕HVSS΁Լ͕ΔલʹిݯΛΦϑ͢Δ͔ɺ·ͨ͸ɺϔουϑΥϯΞϯϓΛύϫʔμ΢ϯ
ͨ͠৔߹ɺϙοϓԻ͕ൃੜ͠·͢ɻίϞϯిѹ͕HVSS΁Լ͕Δ·Ͱͷ࣌ؒ͸࣌ఆ਺ͷ2ഒͷ࣌ؒ
Ͱ͢ɻ
(10) ϔουϑΥϯΞϯϓͷύϫʔμ΢ϯ: PMHPL = PMHPR bits = “1” → “0”
(11) DAC͓ΑͼMIN-Ampͷύϫʔμ΢ϯ: PMDAC = PMMIN bits = “1” → “0”
(12) όεϒʔετͷOFF: BST1-0 bits = “00”
(13) DAC Æ HP-AmpͷύεͷDisable: DACH bit = “1” → “0”
MS0986-J-00
- 81 -
2008/07