AK4368 Datasheet, PDF (18/58 Pages) Asahi Kasei Microsystems – PLL & HP-AMP DAC

ASAHI KASEI
[AK4368]
εϨʔϒϞʔυ࣌ɺBICK, LRCK pin΁ೖྗ͞ΕΔΫϩοΫΛج४ʹ಺෦ͷPLLʹͯɺAK4368ʹඞཁͳΫϩοΫΛੜ੒
͠·͢ɻ͜ͷϞʔυͰ͸MCKOʹಉͨ͠ظBICK, LRCKΛೖྗ͠·͢ɻ
AK4368
MCKI
MCKO
BICK
LRCK
27MHz,26MHz,19.8MHz,19.68MHz,
19.2MHz,15.36MHz,14.4MHz,13MHz,
12MHz,11.2896MHz
DSP or µP
256fs/128fs/64fs/32fs
32fs ~ 64fs
1fs
MCLK
BCLK
LRCK
SDATA
SDTO
Figure 12. PLL Slave Mode
εϨʔϒϞʔυ࣌(M/S bit = “0”) ɺPMPLL bit = “0” Æ “1” ͓ΑͼPMDAC bit = “0” Æ “1”ઃఆʹͨ͠ޙPLL͕ϩ
οΫ͢Δ·ͰͷؒɺMCKO bit = “1”ͷͱ͖MCKO pin ͔Β͸ਖ਼ৗͰͳ͍प೾਺ͷΫϩοΫ͕ग़ྗ͞Ε·͢ɻͦ
ͷޙɺPLL͕ϩοΫ͢ΔͱMCKO pin ͔ΒTable 3Ͱબ୒͞ΕͨΫϩοΫ͕ग़ྗ͞Ε·͢ɻಈ࡞࣌(PMDAC bit =
“1”) ͸LRCKͱBICKΛࢭΊͯ͸͍͚·ͤΜɻ͜ΕΒͷΫϩοΫ͕͞څڙΕͳ͍৔߹ɺ಺෦ʹμΠφϛοΫͳ
ϩδοΫΛ࢖༻͍ͯ͠ΔͨΊɺաిྲྀ͕ྲྀΕɺಈ࡞͕ҟৗʹͳΔՄೳੑ͕͋Γ·͢ɻΫϩοΫΛࢭΊΔ৔߹
͸ύϫʔμ΢ϯঢ়ଶ(PMDAC bit = “0”)ʹͯ͠Լ͍͞ɻ
Mode PLL3 PLL2 PLL1
0
0
0
0
1
0
0
0
2
0
0
1
3
0
0
1
4
0
1
0
5
0
1
0
6
0
1
1
7
0
1
1
8
1
0
0
9
1
0
0
10
1
0
1
11
1
0
1
12
1
1
0
13
1
1
0
14-15
Others
PLL0
MCKI
fs[kHz]
VCOCÍ·R,C
R[Ω]
C[F]
0 11.2896MHz 44.1, 48
10k
22n
1
14.4MHz 44.1, 48
10k
22n
0
12MHz
44.1, 48
10k
47n
1
19.2MHz 44.1, 48
10k
22n
0
15.36MHz 44.1, 48
10k
22n
1
13MHz
44.1, 48
15k
0
19.68MHz 44.1, 48
10k
1
19.8MHz 44.1, 48
10k
330n
47n
47n
0
26MHz
44.1, 48
15k
330n
1
27MHz
44.1, 48
10k
47n
0
13MHz
44.0995
48.0007
10k
22n
1
26MHz
44.0995
48.0007
10k
22n
0
19.8MHz
44.0995
47.9992
10k
22n
1
27MHz
44.0995
47.9997
10k
22n
N/A
N/A
N/A
N/A
Table 1. MCKIೖྗप೾਺ (PLL mode)
PLLϩοΫ
࣌ؒ (typʣ
20ms
20ms
20ms
20ms
20ms
100ms
20ms
20ms
100ms
20ms
Default
20ms
20ms
20ms
20ms
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MS0409-J-01
- 18 -
2005/08