AK4537 Datasheet, PDF (25/76 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4537]
LRCK
0123
BICK(32fs)
SDTO(o)
15 14 13
9 10 11 12 13 14 15 0 1 2 3
7 6 5 4 3 2 1 0 15 14 13
SDTI(i)
15 14 13
7 6 5 4 3 2 1 0 15 14 13
0123
BICK(64fs)
SDTO(o)
15 14 13
15 16 17 18
10
31 0 1 2 3
15 14 13
SDTI(i)
15 14 13
1 0 Don't Care
15:MSB, 0:LSB
Lch Data
15 14 13
Figure 17. Mode 1 Timing
9 10 11 12 13 14 15 0 1
7 6 5 4 3 2 1 0 15
7 6 5 4 3 2 1 0 15
15 16 17 18
31 0 1
10
10
15
Don't Care 15
Rch Data
LRCK
0123
BICK(32fs)
SDTO(o)
0 15 14
9 10 11 12 13 14 15 0 1 2 3
8 7 6 5 4 3 2 1 0 15 14
SDTI(i)
0 15 14
0123
BICK(64fs)
SDTO(o)
15 14
8 7 6 5 4 3 2 1 0 15 14
15 16 17 18
31 0 1 2 3
21 0
15 14
SDTI(i)
15 14
21 0
15:MSB, 0:LSB
Lch Data
Don't Care
15 14
Figure 18. Mode 2 Timing
9 10 11 12 13 14 15 0 1
8 7 6 5 4 32 1 0
87 6 5 4 3 21 0
15 16 17 18
31 0 1
210
2 1 0 Don't Care
Rch Data
„ Digital High Pass Filter
The ADC has a digital high pass filter for DC offset cancellation. The cut-off frequency of the HPF is 3.4Hz
(@fs=44.1kHz) and scales with sampling rate (fs).
MS0202-E-04
- 25 -
2005/04