AK4612EQ Datasheet, PDF (31/68 Pages) Asahi Kasei Microsystems – 6/8-Channel Audio CODEC

[AK4612]
■ σΟΤϯϑΝγεϑΟϧλ
IIRϑΟϧλʹΑΔ3प೾਺(32kHz, 44.1kHz, 48kHz)ରԠͷσΟΤϯϑΝγεϑΟϧλ(50/15µsಛੑ)Λ಺ଂ͍ͯ͠·͢ɻ
Double Speed ModeɺQuad Speed Mode ࣌σΟΤϯϑΝγεϑΟϧλ͸ࣗಈతʹOFFʹͳΓ·͢ɻઃఆ͸Ϩδελ͔Βߦ
͍ɺDAC1(SDTI1), DAC2(SDTI2), DAC3(SDTI3), DAC4(SDTI4)ʹରͯ͠ಠཱʹઃఆͰ͖·͢ɻ
Mode
0
1
2
3
Sampling Speed Mode
Normal Speed Mode
Normal Speed Mode
Normal Speed Mode
Normal Speed Mode
DEM11
(DEM61-21)
0
0
1
1
DEM10
(DEM60-20)
0
1
0
1
DEM
44.1kHz
OFF
48kHz
32kHz
(default)
Table 8. σΟΤϯϑΝγείϯτϩʔϧ
■ σΟδλϧHPF
ADC͸DCΦϑηοτΩϟϯηϧͷͨΊʹσΟδλϧHPFΛ಺ଂ͠·͢ɻHPFͷfc͸ɺfs=48kHz࣌1.0Hzʹͳͬ
͓ͯΓɺप೾਺Ԡ౴͸fsʹൺྫ͠·͢ɻ
■ ϚελΫϩοΫग़ྗ
AK4612͸ϚελΫϩοΫग़ྗϐϯΛ΋ͪ·͢ɻDIV bitΛ “1”ʹ͢Δͱ1/2෼पͨ͠ΫϩοΫ͕MCKO pin͔Β
ग़ྗ͞Ε·͢(Table 9)ɻ
DIV
MCKO
0
XTI x1 ^(default)
1
XTI x1/2
Table 9. ϚελΫϩοΫग़ྗप೾਺બ୒
■ ϚελϞʔυͱεϨʔϒϞʔυ
ϚελϞʔυͱεϨʔϒϞʔυͷ੾Γସ͑͸ M/S pin Ͱߦ͍·͢ɻ “H” ͰϚελϞʔυɺ“L” ͰεϨʔϒϞʔ
υͰ͢ɻϚελϞʔυ࣌ (M/S pin = “H” ) ʹ͸ LRCK, BICK pin ͸ग़ྗͱͳΓ·͢ɻεϨʔϒϞʔυ࣌ (M/S pin
= “L” ) ʹ͸ LRCK , BICK pin ͸ೖྗͱͳΓ·͢ɻLRCK, BICK pin ͸Table 10ͷΑ͏ʹͳΓ·͢ɻ
PDN pin
L
H
M/S pin
L
H
L
H
LRCK pin
Input
“L”ग़ྗ
Input
Output
BICK pin
Input
“L”ग़ྗ
Input
Output
Table 10. LRCK, BICK pin
MS1039-J-01
- 31 -
2009/06