AK4497 Datasheet, PDF (56/98 Pages) Asahi Kasei Microsystems – Quality Oriented 32-Bit 2ch DAC

[AK4497]
[3] External Digital Filter Mode (EXDF mode)
The audio data is input by BCK and WCK from the DINL and DINR pins. Three formats are available
(Table 26) by DIF2-0 bits setting. The data is latched on the rising edge of BCK. The BCK and MCLK
clocks must not burst.
Table 26. Audio Interface Format (EXDF 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 16-bit LSB justified
3
0
1
1
N/A
4
1
0
0 24-bit LSB justified
5
1
0
1 32-bit LSB justified
6
1
1
0 24-bit LSB justified (default)
7
1
1
1 32-bit LSB justified
1/16fs or 1/8fs or 1/4fs or 1/2fs
WCK
BCK
01
8 9 10 11
16 17
DINL or
DINR
BCK
DINL or
DINR
BCK
DINL or
DINR
31 30
01
Don’t care
01
Don’t care
24 23 22 21 20 17 16 15 14
5 6 78
47 48 49
Don’t care
13 14 15 16
Don’t care
23 24 25
Don’t care 31
26 27 28 29 30 31 0 1
654 321 0
65
92 93 94 95 0 1
31
3 2 1 0 Don’t care
44 45 46 47 0 1
3 2 1 0 Don’t care
Figure 46. EXDF Mode Timing
Rev. 0.1
- 56 -
2015/11