AK4647VQ Datasheet, PDF (27/72 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP

ASAHI KASEI
[AK4647]
„ σΟδλϧHPF
AK4647͸DCΦϑηοτΩϟϯηϧ༻ͷHPFΛ಺ଂ͍ͯ͠·͢ɻHPFͷΧοτΦϑप೾਺͸0.9Hz (@fs=
44.1kHz)ʹͳ͓ͬͯΓɺαϯϓϦϯάप೾਺(fs)ʹൺྫ͠·͢ɻPMADL bit = “1” or PMADR bit = “1”ͷͱ͖ɺ
ADCͷHPF͸ONɺDACͷHPF͸OFFͰ͢ɻPMADL=PMADR bits = “0”, PMDAC bit = “1”ͷͱ͖ɺDACͷHPF
͸ONɺADCͷHPF͸OFFͰ͢ɻ
„ ϚΠΫʗϥΠϯೖྗηϨΫλ
AK4647͸ϚΠΫΞϯϓ΁ͷೖྗηϨΫλΛ಺ଂ͍ͯ͠·͢ɻMDIF1, MDIF2 bits = “0”ͷͱ͖ɺINL, INR bits
ʹΑΓɺLIN1/LIN2, RIN1/RIN2ΛͦΕͧΕ੾Γସ͑Δ͜ͱ͕Ͱ͖·͢ɻMDIF1, MDIF2 bits = “1”ͷͱ͖ɺLIN1,
RIN1, LIN2, RIN2 pins͸ͦΕͧΕIN1−, IN1+, IN2+, IN2− pinsͱͳΓɺࠩಈೖྗ͕ՄೳͰ͢(Figure 22)ɻࠩಈೖ
ྗͰ࢖༻͢Δ৔߹ɺTable 16Ͱ “X”ҹͷ͍͍ͭͯΔϐϯʹ͸৴߸Λೖྗ͠ͳ͍Ͱ͍ͩ͘͞ɻ
MDIF1 bit
0
0
0
0
0
1
1
Others
MDIF2 bit
0
0
0
0
1
0
1
INL bit
INR bit
Lch
0
0
LIN1
0
1
LIN1
1
0
LIN2
0
1
LIN2
0
0
LIN1
0
1
IN1+/−
0
0
IN1+/−
N/A
Table 15. MIC/Line In Path Select
Rch
RIN1
RIN2
RIN1
RIN2
IN2+/−
RIN2
IN2+/−
N/A
Default
Register
Pin
MDIF1 bit MDIF2 bit
LIN1
IN1−
RIN1
IN1+
LIN2
IN2+
RIN2
IN2−
0
0
O
O
O
O
0
1
O
X
O
O
1
0
O
O
X
O
1
1
O
O
O
O
Table 16. Handling of MIC/Line Input Pins (“-“: N/A; “X”: Signal should not be input.)
MS0566-J-00
- 27 -
2006/11