AK4490EN Datasheet, PDF (39/68 Pages) Asahi Kasei Microsystems – Premium 32-Bit 2ch DAC

[AK4490EN]
[3] External Digital Filter Mode (EX DF I/F Mode)
DW indicates the number of BCK in one WCK cycle. The audio data is input by MCLK, BCK and WCK
from the DINL and DINR pins. Three formats are available (Table 23) by DIF2-0 bits setting. The data is
latched on the rising edge of BCK. The BCK and MCLK clocks must be the same frequency and must not
burst. BCK and MCLK frequencies for each sampling speed are shown in Table 22.
Sampling
Speed[kHz]
44.1(30~48)
44.1(30~48)
96(54~96)
96(54~96)
192(108~192)
192(108~192)
Table 22. System Clock Example (EX DF I/F mode) (N/A: Not available)
128fs
N/A
N/A
N/A
N/A
N/A
N/A
12.288
32
24.576
32
N/A
N/A
192fs
N/A
N/A
N/A
N/A
N/A
N/A
18.432
48
36.864
48
36.864
96
MCLK&BCK [MHz]
256fs
N/A
N/A
11.2896
32
384fs
N/A
N/A
16.9344
48
24.576
32
N/A
N/A
36.864
48
36.864
96
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
512fs
22.5792
32
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
768fs
33.8688
48
33.8688
96
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
WCK
16fs
DW
8fs
DW
8fs
DW
4fs
DW
4fs
DW
2fs
DW
ECS
0
1
0
1
0
1
(default)
Table 23. Audio Interface Format (EX DF I/F mode) (N/A: Not available)
Mode DIF2 DIF1 DIF0
Input Format
0
0
0
0
16-bit LSB justified
1
0
0
1
N/A
2
0
1
0
N/A
3
0
1
1
N/A
4
1
0
0
24-bit LSB justified
5
1
0
1
32-bit LSB justified (default)
6
1
1
0
N/A
7
1
1
1
N/A
015013666-E-01
- 39 -
2015/12