[AK4388A]

MS1008-E-02

2010/09

- 9 -

Data is shifted in via the SDTI pin using BICK and LRCK inputs. The DIF0-1 as shown in Table 5 can select four serial

data modes. The DIF1 pin is internal pull-up pin. In all modes the serial data is MSB-first, 2’s compliment format and is

latched on the rising edge of BICK.

Mode

DIF1

DIF0

SDTI Format

BICK

Figure

0

L

L

16bit LSB justified

≥32fs

Figure 4

1

L

H

24bit LSB justified

≥48fs

Figure 5

2

H

L

24bit MSB justified

≥48fs

Figure 6

3

H

H

≥48fs or 32fs

Figure 7

Table 5. Audio Data Formats

SDTI

BICK

LRCK

SDTI

15

14

6

5

4

BICK

0

1

10

11

12

13

14

15

0

1

10

11

12

13

14

15

0

1

32

1

0

15

14

(32fs)

(64fs)

0

14

1

15

16

17

31

0

1

14

15

16

17

31

0

1

15

14

0

15

14

0

Mode 0

Don’t care

Don’t care

15:MSB, 0:LSB

Mode 0

15

14

6

5

4

3

2

1

0

Lch Data

Rch Data

Figure 4. Mode 0 Timing

SDTI

LRCK

BICK

(64fs)

0

9

1

10

11

12

31

0

1

9

10

11

12

31

0

1

19

0

19

0

Mode 1

Don’t care

Don’t care

23:MSB, 0:LSB

Lch Data

Rch Data

88

20

22

21

23

20

22

21

23

Figure 5. Mode 1 Timing