AK5701 Datasheet, PDF (22/62 Pages) Asahi Kasei Microsystems – PLL & MIC-AMP 16-Bit Stereo ADC

ASAHI KASEI
[AK5701]
„ PLLϞʔυ
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৔߹ɺTable 4ͷ௨ΓͰ͢ɻ
1) PLL Modeͷઃఆ
PLL3 PLL2 PLL1 PLL0 PLLج४Ϋϩ
Mode
bit bit bit bit οΫೖྗϐϯ
ೖྗप೾਺
VCOC pinÍ·
R,C
R[Ω] C[F]
PLLϩοΫ
࣌ؒ
(max)
0
0
0
0
0 EXLRCK pin
1fs
6.8k 220n 80ms
2
0
0
1
0 EXBCLK pin
32fs
10k 4.7n
2ms
10k 10n
4ms
3
0
0
1
1 EXBCLK pin
64fs
10k 4.7n
2ms
10k 10n
4ms
4
0
1
0
0
MCKI pin
11.2896MHz
10k 4.7n
40ms
5
0
1
0
1
MCKI pin
12.288MHz
10k 4.7n
40ms
6
0
1
1
0
MCKI pin
12MHz
10k 4.7n
40ms
7
0
1
1
1
MCKI pin
24MHz
10k 4.7n
40ms
8
1
0
0
0
MCKI pin
19.2MHz
10k 4.7n
40ms
9
1
0
0
1
MCKI pin 12MHz (Note 27) 10k 4.7n
40ms
12
1
1
0
0
MCKI pin
13.5MHz
10k 10n
40ms
13
1
1
0
1
MCKI pin
27MHz
10k 10n
40ms
14
1
1
1
0
MCKI pin
13MHz
10k 220n 60ms
15
1
1
1
1
MCKI pin
26MHz
10k 220n 60ms
Others
Others
N/A
Table 4. Setting of PLL Mode (fs: Sampling Frequency)
Note 27. PLL3-0 bits = “0110”ͱ “1001”ͷ૬ҧ͸Table 5Λࢀরͯ͠Լ͍͞ɻ
Default
2) PLL ModeͷαϯϓϦϯάप೾਺ઃఆ
MCKIೖྗͷ৔߹͸ɺTable 5ͷઃఆʹΑΓαϯϓϦϯάप೾਺͕બ୒Ͱ͖·͢ɻ
Mode
FS3 bit
FS2 bit
FS1 bit
FS0 bit
Sampling Frequency
0
0
0
0
0
8kHz
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
7.349918kHz (Note 28)
5
0
1
0
1
11.025kHz
11.024877kHz (Note 28)
6
0
1
1
0
14.7kHz
14.69984kHz (Note 28)
7
0
1
1
1
22.05kHz
22.04975kHz (Note 28)
10
1
0
1
0
32kHz
11
1
0
1
1
48kHz
14
1
1
1
0
29.4kHz
29.39967kHz (Note 28)
15
1
1
1
1
44.1kHz
44.0995kHz (Note 28)
Default
Others
Others
N/A
Table 5. Setting of Sampling Frequency at PMPLL bit = “1” and Reference Clock=MCKI pin
Note 28. PLL3-0 bits = “1001”ͷͱ͖Ͱ͢ɻ
MS0404-J-00
- 22 -
2005/08