CS4364_08 Datasheet, PDF (22/50 Pages) Cirrus Logic – 103 dB, 192 kHz 6-Channel D/A Converter

CS4364
4.3 Digital Interface Formats
The serial port operates as a slave and supports the I²S, Left-Justified, Right-Justified, and One-Line Mode
(OLM) digital interface formats with varying bit depths from 16 to 32 as shown in Figures 8-15. Data is
clocked into the DAC on the rising edge. OLM configurations are only supported in Software Mode.
LRCK
SCLK
SDINx
Left Channel
Right Channel
MSB -1 -2 -3 -4 -5 +5 +4 +3 +2 +1 LSB
MSB -1 -2 -3 -4 +5 +4 +3 +2 +1 LSB
Figure 8. Format 0 - Left-Justified up to 24-bit Data
LRCK
SCLK
SDINx
Left Channel
Right Channel
MSB -1 -2 -3 -4 -5 +5 +4 +3 +2 +1 LSB
MSB -1 -2 -3 -4 +5 +4 +3 +2 +1 LSB
Figure 9. Format 1 - I²S up to 24-bit Data
LRCK
SCLK
SDINx
LRCK
SCLK
SDINx 0
Left Channel
Right Channel
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
32 clocks ^{Figure 10. Format 2 - Right-Justified 16-bit Data}
Left Channel
Right Channel
23 22 21 20 19 18
76543210
23 22 21 20 19 18
32 clocks Figure 11. Format 3 - Right-Justified 24-bit Data
76543210
LRCK
SCLK
SDINx 1 0
Left Channel
Right Channel
19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
32 cl^Focⁱk^gs^{ure 12. Format 4 - Right-Justified 20-bit Data}
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DS619F1