ak4647vq AKM Semiconductor, Inc., ak4647vq Datasheet - Page 19

• Manufacturer Part Number: ak4647vq
• Description: Stereo Codec With Mic/hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
„ PLL Mode
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 4, whenever the AK4647 is supplied to a stable clocks after
PLL is powered-up (PMPLL bit = “0”
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 5.
When PLL reference clock input is LRCK or BICK pin the sampling frequency is selected by FS3 and FS1-0 bits. (See
Table 6). FS2 bit is “don’t care”.
MS0566-E-00
Others
Mode
12
13
0
2
3
4
5
6
7
PLL3
Others
Mode
Others
bit
Mode
0
0
0
0
0
1
1
10
11
14
15
0
0
0
1
2
3
4
5
6
7
Table 5. Setting of Sampling Frequency at PMPLL bit = “1” (Reference Clock = MCKI pin)
0
1
2
3
6
7
Table 6. Setting of Sampling Frequency at PMPLL bit = “1” (Reference Clock = LRCK or BICK pin)
Others
PLL2
bit
0
0
0
1
1
1
1
1
1
FS3 bit
FS3 bit
0
0
0
0
1
1
0
0
0
0
0
0
0
0
1
1
1
1
PLL1
bit
0
1
1
0
0
1
1
0
0
Table 4. Setting of PLL Mode (*fs: Sampling Frequency)
Don’t care
Don’t care
Don’t care
Don’t care
Don’t care
Don’t care
PLL0
FS2 bit
bit
0
0
1
0
1
0
1
0
1
FS2 bit
0
0
0
0
1
1
1
1
0
0
1
1
“1”) or sampling frequency changes.
Others
Clock Input
Others
LRCK pin
Reference
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
MCKI pin
BICK pin
BICK pin
FS1 bit
PLL
N/A
Pin
0
0
1
1
1
1
FS1 bit
0
0
1
1
0
0
1
1
1
1
1
1
- 19 -
FS0 bit
11.2896MHz
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 < fs
24kHz < fs
32kHz < fs
8kHz < fs
7.35kHz
Sampling Frequency
R[ ]
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
fs
8kHz
N/A
12kHz
220n
16kHz
24kHz
32kHz
48kHz
C[F]
4.7n
4.7n
4.7n
4.7n
4.7n
4.7n
10n
10n
10n
10n
8kHz
PLL Lock
160ms
(max)
40ms
40ms
40ms
40ms
40ms
40ms
Time
2ms
4ms
2ms
4ms
Default
Default
[AK4647]
Default
2006/11