AK4534 Datasheet, PDF (23/64 Pages) Asahi Kasei Microsystems – 16Bit CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4534]
LRCK
0123
BICK(32fs)
SDTO(o)
15 14 13
9 10 11 12 13 14 15 0 1 2 3
76543210
SDTI(i)
15 14 13
0123
BICK(64fs)
SDTO(o)
15 14 13
7 6 5 4 3 2 1 0 15 14 13
15 16 17 18
31 0 1 2 3
10
SDTI(i)
15 14 13
1 0 Don't Care 15 14 13
15:MSB, 0:LSB
Lch Data
Figure 7. Mode 1 Timing
9 10 11 12 13 14 15 0 1
15
7 6 5 4 3 2 1 0 15
15 16 17 18
31 0 1
10
15
Don't Care 15
Rch Data
LRCK
0123
BICK(32fs)
SDTO(o)
15 14
9 10 11 12 13 14 15 0 1 2 3
876543210
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
210
SDTI(i)
15 14
2 1 0 Don't Care 15 14
15:MSB, 0:LSB
Lch Data
Figure 8. Mode 2 Timing
9 10 11 12 13 14 15 0 1
876543210
15 16 17 18
31 0 1
2 1 0 Don't Care
Rch Data
n 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).
MS0133-E-03
- 23 -
2003/5