Samsung S5PC100, User Manual

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S5PC100 USER’S MANUAL (REV1.0) I2S CONTROLLER(2CH)
10.3-5
4.3.2 MSB (Left) Justified
MSB-Justified (Left-Justified) format is similar to I2S bus format, except that in MSB-justified format, the
transmitter always sends the MSB of the next word at the same time whenever the I2SLRCLK is changed.
4.3.3 LSB (Right) Justified
LSB-Justified (Right-Justified) format is opposite to the MSB-justified format. In other word, the transferring serial
data is aligned with ending point of I2SLRCLK transition.
Figure 10.3-3 shows the audio serial format of I2S, MSB-justified, and LSB-justified. Note that in this figure, the
word length is 16-bit and I2SLRCLK makes transition every 24 cycle of I2SBCLK (BFS is 48 fs, where fs is
sampling frequency; I2SLRCLK frequency).
BCLK
LRCLK LEFT RIGHT
SD
I 2 S Format ( N = 8 or 16 )
BCLK
LRCLK LEFT RIGHT
SD
MSB - Justified (Left - Justified ) Format ( N = 8 or 16 )
BCLK
LRCLK LEFT
RIGH
T
SD
LSB - Justified ( Right - Justified ) Format ( N = 8 or 16 )
MSB
(1st)
2nd
Bit
N-1th
Bit
MSB
(1st)
2nd
Bit
N-1th
Bit
MSB
(1st)
2nd
Bit
N-1th
Bit
MSB
(1st)
2nd
Bit
N-1th
Bit
1st
Bit
N-2th
Bit
LSB
(N-1th)
1st
Bit
N-2th
Bit
LSB
(N-1th)
Figure 10.3-3 I2S Audio Serial Data Formats