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AK4385 Datasheet, PDF (10/21 Pages) Asahi Kasei Microsystems – 108dB 192kHz 24-Bit 2ch ΔΣ DAC | |||
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ASAHI KASEI
[AK4385]
MCLK
512fs
768fs
256fs
384fs
128fs
192fs
Sampling Speed
Normal
Double
Quad
Table 5. Sampling Speed (Auto Setting Mode: Default)
LRCK
fs
32.0kHz
44.1kHz
48.0kHz
88.2kHz
96.0kHz
176.4kHz
192.0kHz
128fs
-
-
-
-
-
22.5792
24.5760
192fs
-
-
-
-
-
33.8688
36.8640
MCLK (MHz)
256fs
384fs
-
-
-
-
-
-
22.5792 33.8688
24.5760 36.8640
-
-
-
-
512fs
16.3840
22.5792
24.5760
-
-
-
-
768fs
24.5760
33.8688
36.8640
-
-
-
-
Sampling Speed
Normal
Double
Quad
Table 6. System Clock Example (Auto Setting Mode)
 Audio Serial Interface Format
Data is shifted in via the SDTI pin using BICK and LRCK inputs. The DIF0-2 as shown in Table 7 can select five serial
data modes. In all modes the serial data is MSB-first, 2âs compliment format and is latched on the rising edge of BICK.
Mode 2 can be used for 16/20 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
â¥32fs
â¥40fs
â¥48fs
â¥48fs
â¥48fs
Figure
Figure 1
Figure 2
Figure 3
Figure 4
Figure 2
Default
Table 7. Audio Data Formats
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
MS0246-E-00
- 10 -
2003/07
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