Cirrus-logic CS8420 Manuale Utente Pagina 20

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20 DS245F4
CS8420
Figure 17. Serial Audio Input Example Formats
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 LSBLSB
Right
Justified
(In)
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
* not 11 - See Serial Input Port Data Format Register Bit Descriptions for an explanation of the meaning of each bit
SIMS SISF SIRES1/0 SIJUST SIDEL SISPOL SILRPOL
Left-Justified X X 00 0 0 0 0
I²S XX00+0101
Right-Justified X X XX* 1 0 0 0
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