AK4951AEN Datasheet, PDF (27/105 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP

[AK4951A]
Table 7. Sampling Frequency at PLL mode (Reference clock is MCKI) (2)
Input Frequency Sampling Frequency
Sampling Frequency
MCKI[MHz]
Mode
generated by PLL [kHz] (Note 33)
12.288
8kHz mode
8.000000
12kHz mode
Note 34
16kHz mode
16.000000
24kHz mode
Note 34
32kHz mode
32.000000
48kHz mode
Note 34
11.025kHz mode
11.025000
22.05kHz mode
22.050000
44.1kHz mode
44.100000
16
8kHz mode
8.000000
12kHz mode
12.000000
16kHz mode
16.000000
24kHz mode
24.000000
32kHz mode
32.000000
48kHz mode
48.000000
11.025kHz mode
11.024877
22.05kHz mode
22.049753
44.1kHz mode
44.099507
Sampling frequency that differs from sampling frequency of mode name
Note 33. These values are rounded off to six decimal places.
Note 34. The AK4951A must be in EXT master mode when selecting this mode.
3) Setting of sampling frequency in PLL Mode (PLL reference clock input pin = BICK pin)
When PLL reference clock input is BICK pin, the sampling frequency is selected by FS3-0 bits as defined
in Table 8.
Table 8. Setting of Sampling Frequency (Reference Clock = BICK pin)
Mode FS3 bit
FS2 bit
FS1 bit
FS0 bit
Sampling Frequency
(Note 35)
0
0
0
0
0
8kHz mode
1
0
0
0
1
12kHz mode
2
0
0
1
0
11.025kHz mode
5
0
1
0
1
16kHz mode
6
0
1
1
0
24kHz mode
7
0
1
1
1
22.05kHz mode
8
1
0
0
0
44.1kHz mode
10
1
0
1
0
32kHz mode
11
1
0
1
1
48kHz mode
(default)
Others
Others
N/A
(N/A: Not Available)
Note 35. Please note that the setting of the FS3-0 bits (Sampling Frequency) is different from the
other modes, when the BICK pin is the PLL reference clock input. The sampling frequency
generated by PLL is the same sampling frequency of mode name.
016001936-E-00
- 27 -
2016/03