ak4648 AKM Semiconductor, Inc., ak4648 Datasheet - Page 32

• Manufacturer Part Number: ak4648
• Description: Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

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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 Table 5, whenever the AK4648 is supplied to stable clocks after
PLL is powered-up (PMPLL bit = “0” → “1”) or sampling frequency changes. When AIN3 bit = “1”, the PLL is not
available.
1) Setting of PLL Mode
2) Setting of sampling frequency in PLL Mode
When PLL reference clock input is MCKI pin, the sampling frequency is selected by FS3-0 bits as defined in Table 6.
MS0625-E-01
Others
Mode
PLL Mode (AIN3 bit = “0”, PMPLL bit = “1”)
12
13
14
15
0
1
2
3
4
5
6
7
8
Others
Mode
PLL3
bit
10
11
14
15
0
1
2
3
4
5
6
7
0
0
0
0
0
0
0
0
1
1
1
1
1
Table 6. Setting of Sampling Frequency at PMPLL bit = “1” (Reference Clock = MCKI pin)
Others
PLL2
bit
0
0
0
0
1
1
1
1
0
1
1
1
1
FS3 bit
0
0
0
0
0
0
0
0
1
1
1
1
PLL1
bit
0
0
1
1
0
0
1
1
0
0
0
1
1
Table 5. Setting of PLL Mode (*fs: Sampling Frequency)
PLL0
bit
FS2 bit
0
1
0
1
0
1
0
1
0
0
1
0
1
0
0
0
0
1
1
1
1
0
0
1
1
Clock Input Pin
PLL Reference
Others
LRCK pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
BICK pin
BICK pin
N/A
N/A
FS1 bit
0
0
1
1
0
0
1
1
1
1
1
1
- 32 -
11.2896MHz
12.288MHz
Frequency
19.2MHz
13.5MHz
12MHz
24MHz
27MHz
13MHz
26MHz
FS0 bit
Input
32fs
64fs
1fs
-
0
1
0
1
0
1
0
1
0
1
0
1
Sampling Frequency
R[Ω]
6.8k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
R and C of
VCOC pin
-
11.025kHz
22.05kHz
7.35kHz
14.7kHz
29.4kHz
44.1kHz
12kHz
16kHz
24kHz
32kHz
48kHz
8kHz
N/A
220n
220n
220n
C[F]
4.7n
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
40ms
60ms
60ms
Time
2ms
4ms
2ms
4ms
-
(default)
[AK4648]
(default)
2007/06