AK4368 Datasheet, PDF (29/58 Pages) Asahi Kasei Microsystems – PLL & HP-AMP DAC

ASAHI KASEI
[AK4368]
„ σΟΤϯϑΝγεϑΟϧλ

IIRϑΟϧλʹΑΔ3प೾਺ (32kHz, 44.1kHz, 48kHz)ରԠͷσΟΤϯϑΝγεϑΟϧλ (50/15µsಛੑ)Λ಺ଂ͠
͍ͯ·͢ɻDEM1-0 bitͰબ୒͞ΕͨσΟΤϯϑΝγεϑΟϧλ͕༗ޮʹͳΓ·͢ (Table 19)ɻ




„ όεϒʔετػೳ
DEM1 bit
DEM0 bit De-emphasis
0
0
44.1kHz
0
1
OFF
Default
1
0
48kHz
1
1
32kHz
Table 19. σΟΤϯϑΝγείϯτϩʔϧ
BST1-0 bitΛ੍͢ޚΔ͜ͱͰɺDAC͔Βόεϒʔετ͞Εͨ৴߸Λग़ྗ͢Δ͜ͱ͕Ͱ͖·͢ (Table 20)ɻઃఆ
஋͸྆νϟωϧڞ௨Ͱ͢ɻ




„ ϛΩγϯάػೳ
BST1 bit
0
0
1
1
BST0 bit
BOOST
0
OFF
1
MIN
0
MID
1
MAX
Table 20. όεϒʔετઃఆ
Default
MONO1-0 bitʹΑΓɺDACʹೖྗ͞ΕΔσΟδλϧσʔλʹରͯ͠Lch/Rchσʔλͷ੾Γସ͑Λߦ͍·͢
(Table 21)É»
MONO1 bit
0
0
1
1
MONO0 bit
Lch
0
L
1
L
0
R
1
(L+R)/2
Table 21. ϛΩγϯάઃఆ
Rch
R
L
R
(L+R)/2
Default
„ γεςϜϦηοτ

ʹ্ཱ࣌͛ͪݯి͸ɺPDN pinʹҰ౓ “L”Λೖྗͯ͠Ϧηοτͯ͠Լ͍͞ɻϦηοτղআޙɺVCOM, DAC, HPL,
HPR, LOUT, ROUT͸ύϫʔμ΢ϯঢ়ଶͰ্ཱ͕ͪΓ·͢ɻPDN pinͰϦηοτ͞Εͳ͍ݶΓɺίϯτϩʔϧ
Ϩδελͷ಺༰͸อ࣋͞Ε͍ͯ·͢ɻ
DACͷϦηοτͼٴύϫʔμ΢ϯ͸PMDAC bitʹ “1”͕ॻ͖ࠐ·ΕͨޙɺMCKIͰղআ͞Εɺ಺෦ͷλΠϛϯ
ά͕ಈ࡞͠·͢ɻMCKI͕ೖྗ͞ΕΔ·Ͱύϫʔμ΢ϯঢ়ଶͰ͢ɻ
MS0409-J-01
- 29 -
2005/08