Cirrus Logic CS4385 - Manual (Page 24)

24 DS671F2
CS4385
4.3.1 OLM #1
OLM #1 serial audio interface format operates in Single-, Double-, or Quad-Speed Mode and will slave to
SCLK at 128 Fs. Six channels of MSB first 20-bit PCM data are input on SDIN1. The last two channels
are input on SDIN4.
4.3.2 OLM #2
OLM #2 serial audio interface format operates in Single-, Double-, or Quad-Speed Mode and will slave to
SCLK at 256 Fs. Six channels of MSB first 24-bit PCM data are input on SDIN1. The last two channels
are input on SDIN4.
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
Figure 14. Format 5 - Right-Justified 18-bit Data
LRCK
SCLK
LSB MSB
20 clks
64 clks 64 clks
LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB MSB
DAC_A1
20 clks 20 clks 20 clks 20 clks 20 clks
Left Channel Right Channel
20 clks 20 clks
SDIN4
SDIN1
DAC_A2 DAC_A3
DAC_A4
DAC_B1
DAC_B4
DAC_B2 DAC_B3
Figure 15. Format 8 - One-Line Mode 1
LSB MSB
24 clks
128 clks
LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB MSB
DAC_A1
24 clks 24 clks 24 clks 24 clks 24 clks
Left Channel Right Channel
24 clks 24 clks
128 clks
LRCK
SCLK
SDIN1
SDIN4 DAC_A4
DAC_A2 DAC_A3 DAC_B1 DAC_B2 DAC_B3
DAC_B4
Figure 16. Format 9 - One-Line Mode 2