AK4380 Datasheet, PDF (10/21 Pages) Asahi Kasei Microsystems – 100dB 24BIT 96kHz 2CH DAC

ASAHI KASEI
[AK4380]
n Audio Serial Interface Format
Data is shifted in via the SDTI pin using BICK and LRCK inputs. The DIF0-2 bits as shown in Table 4 can select five
formats in serial mode. In parallel mode, the DIF0 pin as shown Table 5 can select two formats. In all modes 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 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
0
1
0
1
0
SDTI Format
16bit LSB Justified
20bit LSB Justified
24bit MSB Justified
24bit I²S Compatible
24bit LSB Justified
BICK
≥32fs
≥40fs
≥48fs
≥48fs
≥48fs
Figure
Figure 1
Figure 2
Figure 3
Figure 4
Figure 2
Default
Table 4. Audio Data Formats (Serial mode)
Mode
2
3
DIF0 SDTI Format
0 24bit MSB Justified
1 24bit I²S Compatible
BICK
≥48fs
≥48fs
Figure
Figure 3
Figure 4
Table 5. Audio Data Formats (Parallel mode)
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
MS0018-E-01
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