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AK4388A Datasheet, PDF (9/18 Pages) Asahi Kasei Microsystems – 192kHz 24-Bit 2ch ΔΣ DAC | |||
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[AK4388A]
â 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. The DIF1 pin is internal pull-up pin. In all modes the serial data is MSB-first, 2âs compliment format and is
latched on the rising edge of BICK.
Mode
0
1
2
3
DIF1
L
L
H
H
DIF0 SDTI Format
BICK
L 16bit LSB justified
â¥32fs
H 24bit LSB justified
â¥48fs
L 24bit MSB justified
â¥48fs
H 16/24bit I2S Compatible â¥48fs or 32fs
Table 5. Audio Data Formats
Figure
Figure 4
Figure 5
Figure 6
Figure 7
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
Donât care
15 14
15:MSB, 0:LSB
Lch Data
0 Donât 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 4. Mode 0 Timing
LRCK
BICK
(64fs)
SDTI
Mode 1
01
8 9 10 11 12
Donât care 23 22 21 20 19
23:MSB, 0:LSB
Lch Data
31 0 1
8 9 10 11 12
0 Donât care 23 22 21 20 19
Rch Data
31 0 1
0
Figure 5. Mode 1 Timing
MS1008-E-02
-9-
2010/09
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