January 16, 2020

0.41

ES9028Q2M Datasheet

11

ESS TECHNOLOGY, INC. 109 Bonaventura Dr., San Jose, CA 95134, USA. Tel (408) 643-

8800 • WWW.ESSTECH.COM

Audio Interface Formats

Several interface formats are provided so that direct connection to common audio processors is possible. The available

formats are shown in the following diagrams. The audio interface format can be set by programming the registers.

31 30 29

2

1

0

31 30 29

2

1

0

31 30 29

2

1

0

31 30 29

2

1

0

SIN

32-bit

MSB

LSB MSB

LSB MSB

31 30

BCLK

LRCLK

LEFT

RIGHT

LEFT JUSTIFIED FORMAT

31 30 29

2

1

0

31 30 29

2

1

0

31 30 29

2

1

0

31 30 29

2

1

0

SIN

32-bit

MSB

LSB MSB

LSB MSB

31 30

BCLK

LRCLK

LEFT

RIGHT

I2S FORMAT

23 22 21

2

1

0

23 22 21

2

1

0

23 22 21

2

1

0

23 22 21

2

1

0

SIN

24-bit

MSB

LSB MSB

LSB MSB

23 22

15 14 13

2

1

0

15 14 13

2

1

0

15 14 13

2

1

0

15 14 13

2

1

0

SIN

16-bit

MSB

LSB MSB

LSB MSB

15 14

23 22 21

2

1

0

23 22 21

2

1

0

23 22 21

2

1

0

23 22 21

2

1

0

SIN

24-bit

MSB

LSB MSB

LSB MSB

23 22

15 14 13

2

1

0

15 14 13

2

1

0

15 14 13

2

1

0

15 14 13

2

1

0

SIN

16-bit

MSB

LSB MSB

LSB MSB

15 14

Note: for Left-Justified and I2S formats, the following number of BCLKs is present per (left plus right) frame:

•

16-bit mode: 32 BCLKs

•

24-bit mode: 48 BCLKs

•

32-bit mode: 64 BCLKs

DCLK

DSD1, DSD2

DCLK

DSD1, DSD2

31 30 29

2

1

0

31 30 29

2

1

0

23 22 21

2

1

0

23 22 21

2

1

0

SIN

32-bit

MSB

LSB MSB

LSB

MSB

MSB

LSB

LSB

19 18 17

2

1

0

19 18 17

2

1

0

MSB

MSB

LSB

LSB

15 14 13

2

1

0

15 14 13

2

1

0

MSB

MSB

LSB

LSB

23 22

MSB

MSB

19 18

MSB

15 14

MSB

31 30

SIN

24-bit

SIN

20bit

SIN

16bit

BCLK

LRCLK

LEFT

RIGHT

FIGURE 1A

FIGURE 1A

FIGURE 1A

FIGURE 1A

LEFT JUSTIFIED FORMAT

31 30 29

2

1

0

31 30 29

2

1

0

31 30 29

2

1

0

31 30 29

2

1

0

23 22 21

2

1

0

23 22 21

2

1

0

SIN

32-bit

MSB

LSB MSB

LSB

MSB

MSB

LSB

LSB

19 18 17

2

1

0

19 18 17

2

1

0

MSB

MSB

LSB

LSB

15 14 13

2

1

0

15 14 13

2

1

0

MSB

MSB

LSB

LSB

23 22

MSB

MSB

19 18

MSB

15 14

MSB

31 30

SIN

24-bit

SIN

20bit

SIN

16bit

BCLK

LRCLK

LEFT

RIGHT

FIGURE 1A

FIGURE 1A

FIGURE 1A

FIGURE 1A

LEFT JUSTIFIED FORMAT

31 30 29

2

1

0

31 30 29

2

1

0

31 30 29

2

1

0

31 30 29

2

1

0

23 22 21

2

1

0

23 22 21

2

1

0

SIN

32-bit

MSB

LSB MSB

LSB

MSB

MSB

LSB

LSB

19 18 17

2

1

0

19 18 17

2

1

0

MSB

MSB

LSB

LSB

15 14 13

2

1

0

15 14 13

2

1

0

MSB

MSB

LSB

LSB

MSB

31 30

SIN

24-bit

SIN

20bit

SIN

16bit

BCLK

LRCLK

LEFT

RIGHT

FIGURE 2A

FIGURE 2A

FIGURE 2A

FIGURE 2A

RIGHT JUSTIFIED FORMAT

31 30 29

2

1

0

31 30 29

2

1

0

31 30 29

2

1

0

31 30 29

2

1

0

23 22 21

2

1

0

23 22 21

2

1

0

SIN

32-bit

MSB

LSB MSB

LSB

MSB

MSB

LSB

LSB

19 18 17

2

1

0

19 18 17

2

1

0

MSB

MSB

LSB

LSB

15 14 13

2

1

0

15 14 13

2

1

0

MSB

MSB

LSB

LSB

23 22

MSB

MSB

19 18

MSB

15 14

MSB

31 30

SIN

24-bit

SIN

20bit

SIN

16bit

BCLK

LRCLK

LEFT

RIGHT

FIGURE 3A

FIGURE 3A

FIGURE 3A

FIGURE 3A

I2S FORMAT

D..

D0

D1

D2

D3

D4

D1

D2

DCLK

FIGURE 4A

D..

D0

D1

D2

D3

D4

D1

D2

DCLK

FIGURE 4B

D..

D0

D1

D2

D3

D4

DSD NORMAL MODE

DSD PHASE MODE