AK4631 Datasheet, PDF (23/69 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4631]
„ ϚελϞʔυͱεϨʔϒϞʔυͷ੾Γସ͑
ϚελϞʔυͱεϨʔϒϞʔυͷ੾Γସ͑͸M/S bitͰߦ͍·͢ɻ“1”ͰϚελϞʔυɺ“0”ͰεϨʔϒϞʔυͰ͢ɻ
AK4631͸ύϫʔμ΢ϯ࣌ (PDN pin = “L”)ɺͼٴϦηοτղআޙ͸εϨʔϒϞʔυͰ͢ɻϦηοτղআޙɺ
M/S bitΛ “1”ʹมߋ͢Δ͜ͱͰϚελϞʔυʹͳΓ·͢ɻ
ϚελϞʔυͰ࢖༻͢Δ৔߹ɺM/S bitʹ “1”͕ॻ͖ࠐ·ΕΔ·ͰɺAK4631ͷFCK, BICK pin͸ϑϩʔςΟϯ
άͷঢ়ଶͰ͢ɻͦͷͨΊɺAK4631ͷFCK, BICK pinʹ100kΩఔ౓ͷϓϧΞοϓ͋Δ͍͸ϓϧμ΢ϯ఍߅Λೖ
ΕΔඞཁ͕͋Γ·͢ɻ
„ PLLϞʔυʹ͍ͭͯ
M/S bit
Mode
0
Slave Mode
1
Master Mode
Table 3. Select Master/Salve Mode
Default
PMPLL bit = “1”ͷ࣌ɺ಺ଂͷߴਫ਼౓ΞφϩάPLL͸FS3-0 bit, PLL3-0 bitͰબ୒ͨ͠ΫϩοΫʹԠͯ͡ಈ࡞͠
·͢ɻPLLͷϩοΫ࣌ؒ͸ɺిݯ౤ೖޙɺPMPLL bit Λ “0” Æ “1”ʹมߋ͠ɺ҆ఆͨ͠ΫϩοΫ͕ೖྗ͞Εͨ
৔߹ɺ·ͨ͸αϯϓϦϯάप೾਺͕มߋ͞Εͨ৔߹Ͱ΋Table 4ͷ௨ΓͰ͢ɻ
1) PLL Modeͷઃఆ
PLL3 PLL2
Mode
bit bit
0
0
0
1
0
0
2
0
0
3
0
0
4
0
1
5
0
1
6
0
1
7
0
1
12
1
1
13
1
1
Others
Others
PLL1 PLL0 PLLج४Ϋϩ
bit bit οΫೖྗϐϯ
ೖྗप೾਺
VCOC pinÍ·
R,C
R[Ω] C[F]
0
0
FCK pin
1fs
6.8k 220n
0
1
BICK pin
16fs
10k 4.7n
1
0
BICK pin
32fs
10k 4.7n
1
1
BICK pin
64fs
10k 4.7n
0
0
MCKI pin 11.2896MHz 10k 4.7n
0
1
MCKI pin 12.288MHz 10k 4.7n
1
0
MCKI pin
12MHz
10k 4.7n
1
1
MCKI pin
24MHz
10k 4.7n
0
0
MCKI pin
13.5MHz 10k 10n
0
1
MCKI pin
27MHz
10k 10n
N/A
Table 4. Setting of PLL Mode (*fs: Sampling Frequency)
PLLϩοΫ
࣌ؒ
(max)
160ms
2ms
2ms
2ms
40ms
40ms
40ms
40ms
40ms
40ms
Default
2) PLL ModeͷαϯϓϦϯάप೾਺ઃఆ
PLL2 bit = “1” (MCKIೖྗ)ͷ৔߹͸ɺTable 5ͷઃఆʹΑΓαϯϓϦϯάप೾਺͕બ୒Ͱ͖·͢ɻ
Mode
FS3 bit
FS2 bit
FS1 bit
FS0 bit Sampling Frequency
0
0
0
0
0
8kHz
Default
1
0
0
0
1
12kHz
2
0
0
1
0
16kHz
3
0
0
1
1
24kHz
4
0
1
0
0
7.35kHz
5
0
1
0
1
11.025kHz
6
0
1
1
0
14.7kHz
7
0
1
1
1
22.05kHz
10
1
0
1
0
32kHz
11
1
0
1
1
48kHz
14
1
1
1
0
29.4kHz
15
1
1
1
1
44.1kHz
Others
Others
N/A
Table 5. Setting of Sampling Frequency at PLL2 bit = “1” and PMPLL bit = “1”
MS0317-J-01
- 23 -
2004/11