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Figure 15. serial audio input example formats, Figure 15, Cs8427 – Cirrus Logic CS8427 User Manual

Page 23

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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