Cirrus Logic CS4361 - Manual (Page 13)

13
CS4361
Confidential Draft
9/30/11
LRCK
SCLK
Left Channel Right Channel
SDATA +3 +2 +1 LSB +5 +4 MSB -1 -2 -3 -4 -5 +3 +2 +1 LSB +5 +4 MSB -1 -2 -3 -4
Internal SCLK Mode External SCLK Mode
I²S, 16-Bit data and INT SCLK = 32 Fs if
MCLK/LRCK = 1024, 512, 256, 128, or 64
I²S, Up to 24-Bit data and INT SCLK = 48 Fs if
MCLK/LRCK = 768, 384, 192, or 96
I²S, Up to 24-Bit data and INT SCLK = 72 Fs if
MCLK/LRCK = 1152 I²S, up to 24-Bit Data
Data Valid on Rising Edge of SCLK
Figure 7. CS4361 Data Format (I²S)
LRCK
SCLK
Left Channel Right Channel
SDATA +3 +2 +1 LSB +5 +4 MSB -1 -2 -3 -4 -5 +3 +2 +1 LSB +5 +4 MSB -1 -2 -3 -4
Internal SCLK Mode External SCLK Mode
Left-Justified, up to 24-Bit Data
INT SCLK = 64 Fs if
MCLK/LRCK = 1024, 512, 256, 128, or 64
INT SCLK = 48 Fs if
MCLK/LRCK = 768, 384, 192, or 96
INT SCLK = 72 Fs if
MCLK/LRCK = 1152 Left-Justified, up to 24-Bit Data
Data Valid on Rising Edge of SCLK
Figure 8. CS4361 Data Format (Left-Justified)
LRCK
SCLK
Left Channel
SDATA 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
Internal SCLK Mode External SCLK Mode
Right-Justified, 24-Bit Data
INT SCLK = 64 Fs if
MCLK/LRCK = 1024, 512, 256, 128, or 64
INT SCLK = 48 Fs if
MCLK/LRCK = 768, 384, 192, or 96
INT SCLK = 72 Fs if
MCLK/LRCK = 1152 Right-Justified, 24-Bit Data
Data Valid on Rising Edge of SCLK
SCLK Must Have at Least 48 Cycles per LRCK Period
Figure 9. CS4361 Data Format (Right-Justified 24)