Owner manual

DS837F2 23
CS4385A
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 Figures 9-18.
Data is clocked into the DAC on the rising edge. OLM configuration is only supported in Software 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
6543210987
15 14 13 12 11 10
6543210987
15 14 13 12 11 10
32 clocks
Figure 11. Format 2 - Right-Justified 16-bit Data
LRCK
SCLK
Left Channel
Right Channel
SDINx
6543210987
15 14 13 12 11 10
10
6543210987
15 14 13 12 11 10
17 16 17 16
32 clocks
19 18 19 18
Figure 12. Format 4 - Right-Justified 20-bit Data
LRCK
SCLK
Left Channel
Right Channel
SDINx
6543210987
15 14 13 12 11 10
10
6543210987
15 14 13 12 11 10
17 16 17 16
32 clocks
Figure 13. Format 5 - Right-Justified 18-bit Data