PCM1730

SLES021 – NOVEMBER 2001

10

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functional description (continued)

(1) Standard Data Format (Right Justified); L-channel = High, R-channel = Low

14 15 16

1

2

15 16

MSB

LSB

1

2

15 16

18 19 20

MSB

LSB

1

2

19 20

1

2

19 20

22 23 24

MSB

LSB

1

23

2

24

1

23

2

24

BCK

L-Channel

DATA

R-Channel

1/fS

DATA

DATA

LRCK

Audio Data Word = 16 Bit

Audio Data Word = 20 Bit

Audio Data Word = 24 Bit

(2) Left Justified Data Format: L-channel = High, R-channel = Low

2

1

MSB

LSB

1

2

24

1

2

24

BCK

L-Channel

DATA

R-Channel

1/fS

LRCK

Audio Data Word = 24 Bit

23

23

(3) I2S Data Format: L-channel = Low, R-channel = High

MSB

LSB

1

2

24

2

1

1

2

24

2

1

MSB

LSB

1

2

16

1

2

16

15

15

23

23

BCK

L-Channel

DATA

R-Channel

1/fS

LRCK

Audio Data Word = 24 Bit

DATA

Audio Data Word = 16 Bit

Figure 4. Audio Data Input Formats