ASAHI KASEI

[AK5359]

MS0428-E-00

2005/09

- 11 -

LRCK

BICK(64fs)

SDTO(o)

0

23 22

1 2

4

0

20 21

24

31 0 12

23 22

0

1

0

23

22

20 21

31

23:MSB, 0:LSB

Lch Data

Rch Data

24

32 1

22 23

23

1

2

3

4

Figure 1. Mode 0 Timing

LRCK

BICK(64fs)

SDTO(o)

0

23 22

1 2

4

0

25

21

24

0 12

23 22

0

1

0

22

25

21

24

321

22 23

23

1

2

3

4

3

23:MSB, 0:LSB

Lch Data

Rch Data

Figure 2. Mode 1 Timing

Digital High Pass Filter

The ADC has a digital high pass filter for DC offset cancellation. The cut-off frequency of the HPF is 1.0Hz (@fs=48kHz)

and scales with sampling rate (fs).

HPF is controlled by CKS2-0 pins (Table 2). If HPF setting (ON/OFF) is changed at operating, click noise occurs by

changing DC offset. It is recommended that HPF setting is changed at PDN pin = “L”.