ak4523 AKM Semiconductor, Inc., ak4523 Datasheet - Page 12

• Manufacturer Part Number: ak4523
• Description: 20bit Stereo Ds Adc & Dac
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
n Digital High Pass Filter
The ADC of AK4523 has a digital high pass filter for DC offset cancel. The cut-off frequency of the HPF is 0.9Hz at
fs=44.1kHz and also scales with sampling rate (fs).
M0021-E-03
LRCK(i)
SCLK(i:64fs)
SDTO(o)
SDTI(i)
LRCK(i)
SCLK(i:32fs)
SDTO(o)
SDTI(i)
SCLK(i:64fs)
SDTO(o)
SDTI(i)
0
0
0
19:MSB, 0:LSB
19
19
4
1
1
1
19:MSB, 0:LSB
18
18
19
19
19 18
2
2
2
18
18
3
3
3
3
17
12 11
2
2
4
4
18
Lch Data
17
9
1
1
3
3
Lch Data
19
10
18
10
0
0
2
2
20
11
19
1
1
9
Figure 3. Mode 2 Timing
Figure 4. Mode 3 Timing
21
12
20
Don’t Care
0
8
0
13
21
7
Don’t Care
14
- 12 -
6
15
31
5
0
0
0
19 18
23
4
1
1
1
22
19
19
19 18
2
2
2
18
18
3
3
3
17
12 11
2
2
4
4
18
Rch Data
17
9
1
1
3
3
Rch Data
19
10
18
10
0
0
2
2
20
11
19
9
1
1
21
12
20
Don’t Care
0
8
0
13
21
7
Don’t Care
14
6
15
31
[AK4523]
5
1999/12
0
0
0
19
19
4
1
1
1