AK4691EG AKM [Asahi Kasei Microsystems], AK4691EG Datasheet - Page 22

• Manufacturer Part Number: AK4691EG
• Description: 4ch ADC + 2ch DAC with MIC/HP/SPK-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

■
When PMPLL bit is “1”, a fully integrated analog phase locked loop (PLL) generates a clock that is selected by the
PLL3-0 and FS3-0 bits. The PLL lock time is shown in
powered-up (PMPLL bit = “0” → “1”) or sampling frequency changes.
1) Setting of PLL Mode
2) Setting of sampling frequency in PLL Mode
When PLL2 bit is “1” (PLL reference clock input is MCKI pin), the sampling frequency is selected by FS3-0 bits as
defined in
When PLL2 bit is “0” (PLL reference clock input is LRCK or BICK pin), the sampling frequency is selected by FS3 and
FS1-0 bits
MS0672-E-00
Others
Mode
12
13
PLL Mode
0
1
2
3
4
5
6
7
Others
Table 5. Setting of Sampling Frequency at PLL2 bit = “1” and PMPLL bit = “1” (N/A: Not available)
PLL3
Mode
Table
Others
bit
(Table
10
11
14
15
Mode
0
0
0
0
0
0
0
0
1
1
0
1
2
3
4
5
6
7
0
1
2
3
6
7
Table 6. Setting of Sampling Frequency at PLL2 bit = “0” and PMPLL bit = “1” (x: Don’t care)
5.
Others
PLL2
6). FS2 bit is “don’t care”.
bit
0
0
0
0
1
1
1
1
1
1
Table 4. Setting of PLL Mode (*fs: Sampling Frequency, N/A: Not available)
FS3 bit
FS3 bit
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
PLL1
bit
0
0
1
1
0
0
1
1
0
0
PLL0
FS2 bit
bit
0
1
0
1
0
1
0
1
0
1
FS2 bit
x
x
x
x
x
x
0
0
0
0
1
1
1
1
0
0
1
1
Others
Clock Input Pin
PLL Reference
Others
LRCK pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
BICK pin
BICK pin
FS1 bit
N/A
N/A
0
0
1
1
1
1
FS1 bit
0
0
1
1
0
0
1
1
1
1
1
1
Table
- 22 -
FS0 bit
11.2896MHz
4, when the AK4691 is supplied stable clocks after PLL is
12.288MHz
0
1
0
1
0
1
Frequency
13.5MHz
12MHz
24MHz
27MHz
Input
32fs
64fs
FS0 bit
1fs
-
0
1
0
1
0
1
0
1
0
1
0
1
Sampling Frequency Range
12kHz < fs ≤ 16kHz
16kHz < fs ≤ 24kHz
24kHz < fs ≤ 32kHz
32kHz < fs ≤ 48kHz
8kHz < fs ≤ 12kHz
7.35kHz ≤ fs ≤ 8kHz
Sampling Frequency
R[Ω]
6.8k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
R and C of
VCOC pin
-
N/A
11.025kHz
22.05kHz
7.35kHz
14.7kHz
29.4kHz
44.1kHz
12kHz
16kHz
24kHz
32kHz
48kHz
8kHz
N/A
220n
C[F]
4.7n
4.7n
4.7n
4.7n
4.7n
4.7n
10n
10n
10n
10n
-
PLL Lock
160ms
(max)
40ms
40ms
40ms
40ms
40ms
40ms
Time
2ms
4ms
2ms
4ms
(default)
-
(default)
[AK4691]
(default)
2007/11