Cirrus Logic CS8427 - Manual (Page 23)

CS8427
DS477F5 23
MSB LSB MSB LSB MSB
ILRCK
ISCLK
SDIN
Channel A Channel B
Left
Justified
(In)
ILRCK
ISCLK
MSB LSB MSB LSB
Channel A
SDIN
MSB
Channel B
I²S
(In)
ILRCK
ISCLK
Channel A Channel B
MSB
SDIN
MSB LSB LSB
Right
Justified
(In)
Figure 15. Serial Audio Input Example Formats
X = don’t care to match format, but does need to be set to the desired setting
+ I²S can accept an arbitrary number of bits, determined by the number of ISCLK cycles
* See Serial Input Port Data Format Register Bit Descriptions for an explanation of the meaning of each bit
SIMS* SISF* SIRES*[1:0] SIJUST* SIDEL* SISPOL* SILRPOL*
Left Justified X X 00+ 0 0 0 0
I²S X X 00+ 0 1 0 1
Right Justified X X XX 1 0 0 0