AK4396 Datasheet, PDF (21/38 Pages) Asahi Kasei Microsystems – Advanced Multi-Bit 192kHz 24-Bit ΔΣ DAC

ASAHI KASEI
[AK4396]
„ Audio Interface Format
[1] PCM Mode
Data is shifted in via the SDATA pin using BICK and LRCK inputs. Five data formats are supported and selected by the
DIF2-0 pins (Parallel mode) or DIF2-0 bits (Serial mode) as shown in Table 11. In all formats the serial data is MSB-first,
2's compliment format and is latched on the rising edge of BICK. Mode 2 can be used for 20 and 16 MSB justified formats
by zeroing the unused LSBs.
Mode
0
1
2
3
4
DIF2
0
0
0
0
1
DIF1
0
0
1
1
0
DIF0
Input Format
BICK
0
16bit LSB justified ≥ 32fs
1
20bit LSB justified ≥ 48fs
0
24bit MSB justified ≥ 48fs
1
24bit I²S Compatible ≥ 48fs
0
24bit LSB justified ≥ 48fs
Table 11. Audio Interface Format
Figure
Figure 1
Figure 2
Figure 3
Figure 4
Figure 2
Default
LRCK
BICK
(32fs)
SDATA
Mode 0
BICK
(64fs)
SDATA
Mode 0
01
10 11 12 13 14 15 0 1
15 14
01
6 5 4 3 2 1 0 15 14
14 15 16 17
31 0 1
Don’t care
15 14
0 Don’t care
15:MSB, 0:LSB
Lch Data
Figure 1. Mode 0 Timing
10 11 12 13 14 15 0 1
6 5 4 3 2 1 0 15 14
14 15 16 17
31 0 1
15 14
0
Rch Data
LRCK
BICK
(64fs)
SDATA
Mode 1
SDATA
Mode 4
01
8 9 10 11 12
31 0 1
8 9 10 11 12
Don’t care
19
0 Don’t care
19
19:MSB, 0:LSB
Don’t care 23 22 21 20 19
0 Don’t care 23 22 21 20 19
23:MSB, 0:LSB
Lch Data
Rch Data
Figure 2. Mode 1, 4 Timing
31 0 1
0
0
MS0336-E-00
- 21 -
2004/08