3 digital interface formats, Figure 10. format 1 - i·s up to 24-bit data, Figure 11. format 2 - right-justified 16-bit data – Cirrus Logic CS4384 User Manual
Page 22: Figure 12. format 3 - right-justified 24-bit data, Figure 13. format 4 - right-justified 20-bit data, Cs4384
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DS620F1
CS4384
4.3
Digital Interface Formats
The serial port operates as a slave and supports the I²S, Left-Justified, Right-Justified, One-Line Mode
(OLM) and TDM digital interface formats with varying bit depths from 16 to 32 as shown in
.
Data is clocked into the DAC on the rising edge. OLM and TDM configurations are only supported in Soft-
ware Mode.
LRCK
SCLK
Left Channel
Right Channel
SDINx
+3 +2 +1
+5 +4
-1 -2 -3 -4 -5
+3 +2 +1
+5 +4
-1 -2 -3 -4
MSB
LSB
MSB
LSB
Figure 9. Format 0 - Left-Justified up to 24-bit Data
LRCK
SCLK
Left Channel
Right Channel
SDINx
+3 +2 +1
+5 +4
-1 -2 -3 -4 -5
+3 +2 +1
+5 +4
-1 -2 -3 -4
MSB
MSB
LSB
LSB
Figure 10. Format 1 - I²S up to 24-bit Data
LRCK
SCLK
Left Channel
Right Channel
SDINx
6
5
4
3
2
1
0
9
8
7
15 14 13 12 11 10
6
5
4
3
2
1
0
9
8
7
15 14 13 12 11 10
32 clocks
Figure 11. Format 2 - Right-Justified 16-bit Data
LRCK
SCLK
Left Channel
SDINx
6
5
4
3
2
1
0
7
23 22 21 20 19 18
6
5
4
3
2
1
0
7
23 22 21 20 19 18
32 clocks
0
Right Channel
Figure 12. Format 3 - Right-Justified 24-bit Data
LRCK
SCLK
Left Channel
Right Channel
SDINx
6
5
4
3
2
1
0
9
8
7
15 14 13 12 11 10
1
0
6
5
4
3
2
1
0
9
8
7
15 14 13 12 11 10
17 16
17 16
32 clocks
19 18
19 18
Figure 13. Format 4 - Right-Justified 20-bit Data