CS4220 Datasheet, PDF (25/32 Pages) Cirrus Logic – 24-Bit Stereo Audio Codec with 3V Interface

CS4220 CS4221
LRCK
SCLK
SDATA
Left Channel
MSB -1 -2 -3 -4 -5 +5 +4 +3 +2 +1 LSB
Right Channel
MSB -1 -2 -3 -4 +5 +4 +3 +2 +1 LSB
Master
I²S, up to 24-bit data
XTI=256, 384, 512 Fs (CS4223-256Fsonly)
LRCK = 4 to 50 kHz
SCLK = 64 Fs
Slave
I²S, up to 24-bit data
XTI = 256, 384, 512 Fs
LRCK = 4 to 50 kHz
SCLK = 48,64, 128 Fs
Figure 8. Serial Audio Format 0 (I²S)
LRCK
SCLK
SDATA
Left Channel
MSB -1 -2 -3 -4 -5 +5 +4 +3 +2 +1 LSB
Right Channel
MSB -1 -2 -3 -4 +5 +4 +3 +2 +1 LSB
Master
Left-justified, up to 24-bit data
XTI = 256, 384, 512 Fs (CS4223 - 256 Fs only)
LRCK = 4 to 50 kHz
SCLK = 64 Fs
Slave
Left-justified, up to 24-bit data
XTI = 256, 384, 512 Fs
LRCK = 4 to 50 kHz
SCLK = 48, 64, 128 Fs
Figure 9. Serial Audio Format 1
LRCK
SCLK
SDATA 0
Left Channel
23 22 21 20 19 18
32 clocks
76543210
Right Channel
23 22 21 20 19 18
76543210
Master
Right-justified, 24-bit data
XTI = 256, 384, 512 Fs (CS4223 - 256 Fs only)
LRCK = 4 to 50 kHz
SCLK = 64 Fs
Slave
Right-justified, 24-bit data
XTI = 256, 384, 512 Fs
LRCK = 4 to 50 kHz
SCLK = 64 Fs
Figure 10. Serial Audio Format 2
DS284PP3
25