AK4388 Datasheet, PDF (9/18 Pages) Asahi Kasei Microsystems – 192kHz 24-Bit 2ch ΔΣ DAC

ASAHI KASEI
[AK4388]
„ Audio Serial Interface Format
Data is shifted in via the SDTI pin using BICK and LRCK inputs. The DIF0-1 as shown in Table 5 can select four serial
data modes. DIF1 pin is internal pull-up pin. In all modes the serial data is MSB-first, 2’s compliment format and is
latched on the rising edge of BICK.
Mode
0
1
2
3
DIF1
L
L
H
H
DIF0
L
H
L
H
SDTI Format
16bit MSB justified
24bit MSB justified
24bit LSB justified
16/24bit I²S Compatible
BICK
≥32fs
≥48fs
≥48fs
≥48fs or 32fs
Table 5. Audio Data Formats
Figure
Figure 1
Figure 2
Figure 3
Figure 4
LRCK
BICK
(32fs)
SDTI
Mode 0
BICK
(64fs)
SDTI
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
15:MSB, 0:LSB
Lch Data
0 Don’t care
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
Figure 1. Mode 0 Timing
LRCK
BICK
(64fs)
SDTI
Mode 1
01
8 9 10 11 12
Don’t care 23 22 21 20 19
23:MSB, 0:LSB
Lch Data
31 0 1
8 9 10 11 12
0 Don’t care 23 22 21 20 19
Rch Data
31 0 1
0
Figure 2. Mode 1 Timing
MS0485-E-01
-9-
2006/07