3 digital interface formats, Figure 7, Figure 8 – Cirrus Logic CS4382A User Manual
Page 23: Figure 9, Figure 10, Cs4382a
DS618F2
23
CS4382A
4.3
Digital Interface Formats
The serial port operates as a slave and supports the I²S, Left-justified, and Right-justified digital interface
formats with varying bit depths from 16 to 24 as shown in
-
. Data is clocked into the DAC on the
rising edge.
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 7. 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 8. 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 9. 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 10. Format 3 - Right-Justified 24-bit Data