AK4343VN Datasheet, PDF (32/99 Pages) Asahi Kasei Microsystems – Stereo DAC with HP/RCV/SPK-AMP

[AK4343]
■ γεςϜϦηοτ
ʹ্ཱ࣌͛ͪݯి͸ɺPDN pinʹҰ౓ “L”Λೖྗͯ͠ϦηοτΛߦͬͯԼ͍͞ɻγεςϜϦηοτ͕ߦΘΕΔ
ͱɺAK4343ͷ಺෦Ϩδελ͸શͯॳظ஋ʹͳΓ·͢ɻ
PMDAC bit = “0” Æ “1”ʹมߋ͢Δ͜ͱͰɺDACͷॳظԽαΠΫϧ͕։࢝͞Ε·͢ɻॳظԽαΠΫϧ͸
1059/fs=24ms@fs=44.1kHzͰ͢ɻॳظԽαΠΫϧதͷDACೖྗσʔλ͸಺෦Ͱ2’sίϯϓϦϝϯτͷ “0”ݻʹఆ
͞Ε·͢ɻॳظԽαΠΫϧ͕ऴྃ͢ΔͱɺDACͷ܈஗Ԇ(25/fs=0.5ms@fs=44.1kHz)ܦաޙɺDACग़ྗ͸σΟ
δλϧೖྗ৴߸ʹ૬౰͢ΔిѹʹͳΓ·͢ɻ
■ ΦʔσΟΦΠϯλϑΣʔεϑΥʔϚοτ
4छྨͷσʔλϑΥʔϚοτ(Table 17)͕DIF1-0 bitsͰબ୒Ͱ͖·͢ɻશϞʔυͱ΋MSBϑΝʔετɺ2’sίϯ
ϓϦϝϯτͷσʔλϑΥʔϚοτͰ͢ɻΦʔσΟΦΠϯλϑΣʔε͸ϚελϞʔυͱεϨʔϒϞʔυʹରԠ
͠·͢ɻϚελϞʔυͰ͸LRCKͱBICK͸ग़ྗʹͳΓɺεϨʔϒϞʔυͰ͸ೖྗʹͳΓ·͢ɻ
Mode
0
1
2
3
DIF1 bit
0
0
1
1
DIF0 bit SDTI (DAC) BICK
0
DSP Mode ≥ 32fs
1
ޙ٧Ί
≥ 32fs
0
લ٧Ί
≥ 32fs
1
I²S׵ޓ
≥ 32fs
Table 17. Audio Interface Format
Mode 1, 2, 3Ͱ͸ɺSDTI͸BICKͷ“↑”Ͱϥον͞Ε·͢ɻ
Figure
Table 18
Figure 28
Figure 29
Figure 30
(default)
Mode 0 (DSPϞʔυ)Ͱ͸ɺBCKP, MSBS bitsʹΑΓɺΦʔσΟΦI/FͷλΠϛϯάΛมߋ͢Δ͜ͱ͕Ͱ͖·͢
(Table 18)É»
DIF1
0
DIF0
0
MSBS
0
0
1
1
BCKP
Audio Interface Format
0
LRCK “↑”ޙͷ1ճ໨ͷBICK “↑”ͷ௚ޙͷBICK “↓”
ͰSDTIͷMSBσʔλ͕ϥον͞Ε·͢ɻ
1
LRCK “↑”ޙͷ1ճ໨ͷBICK “↓”ͷ௚ޙͷBICK “↑”
ͰSDTIͷMSBσʔλ͕ϥον͞Ε·͢ɻ
0
LRCK “↑”ޙͷ2ճ໨ͷBICK “↓”ͰSDTIͷMSBσʔ
λ͕ϥον͞Ε·͢ɻ
1
LRCK “↑”ޙͷ2ճ໨ͷBICK “↑”ͰSDTIͷMSBσʔ
λ͕ϥον͞Ε·͢ɻ
Table 18. Audio Interface Format in Mode 0
Figure
Figure 24
Figure 25
Figure 26
Figure 27
(default)
MS0478-J-02
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2010/11