AK4645AEZ Datasheet, PDF (75/85 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP

[AK4645A]
γεςϜઃܭ
Figure 67͓ΑͼFigure 68͸γεςϜ઀ଓྫͰ͢ɻ۩ମతͳճ࿏ͱଌఆྫʹ͍ͭͯ͸ධՁϘʔυ(AKD4645A)
Λࢀরͯ͠Լ͍͞ɻ
Power Supply ^10u
2.6 ∼ 3.6V
Headphone
Power Supply
1.6 ∼ 3.6V
10 0.22u
10 0.22u
1u
Line In
Speaker
Mono In
External MIC
Internal MIC
External
SPK-Amp
0.1u
25 LIN4
TVDD 16
26 ROUT
DVDD 15
0.1u
27 LOUT
BICK 14
28 MIN
AK4645A
LRCK 13
DSP
29 RIN2
Top View
SDTO 12
30 LIN2
SDTI 11
31 LIN1
CDTI 10
32 RIN1
CCLK 9
μP
Analog Ground Digital Ground
஫:
- AK4645AͷAVSS, HVSSͱपลίϯτϩʔϥ౳ͷάϥϯυ͸෼͚ͯ഑ઢͯ͠Լ͍͞ɻ
- σΟδλϧೖྗϐϯ͸Φʔϓϯʹ͠ͳ͍ͰԼ͍͞ɻ
- ϚελϞʔυͰ࢖༻͢Δ৔߹ɺM/S bitʹ “1”͕ॻ͖ࠐ·ΕΔ·ͰɺAK4645AͷLRCK, BICK pin͸
ϑϩʔςΟϯάͷঢ়ଶͰ͢ɻͦͷͨΊɺAK4645AͷLRCK, BICK pinʹ100kΩఔ౓ͷϓϧΞοϓ
͋Δ͍͸ϓϧμ΢ϯ఍߅ΛೖΕΔඞཁ͕͋Γ·͢ɻ
- ݯిϐϯͷ0.1μF͸ηϥϛοΫίϯσϯαΛ࢖༻͍ͯͩ͘͠͞ɻͦΕҎ֎ͷίϯσϯαͷछྨ͸
ಛʹࢦఆ͋Γ·ͤΜɻ
- AVDD͔Β10ΩͷγϦʔζ఍߅Λհͯ͠DVDDݯిʹΛ͢څڙΔ৔߹ɺDVDDͱάϥϯυͷؒʹ
0.1μFΑΓେ͖͍ίϯσϯαΛ઀ଓ͠ͳ͍Ͱ͍ͩ͘͞ɻ
Figure 67. γεςϜ઀ଓਤ(AIN3 bit = “0”, ϚΠΫೖྗ࣌)
MS0986-J-00
- 75 -
2008/07