ak4522 AKM Semiconductor, Inc., ak4522 Datasheet - Page 10

• Manufacturer Part Number: ak4522
• Description: 20bit Stereo ?? Adc & Dac
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
n Digital High Pass Filter
The ADC of AK4522 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).
M0020-E-01
LRCK(i)
SCLK(i:64fs)
SDTO(o)
SDTI(i)
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
0
19:MSB, 0:LSB
19:MSB, 0:LSB
19
19
19
4
Don’t Care
1
1
1
1
19:MSB, 0:LSB
18
18
18
19
19
19 18
2
2
2
2
18
18
3
3
3
3
8
12
17
19
12 11
7
2
2
4
4
13
18
17
Lch Data
Lch Data
9
18
6
1
1
3
3
Lch Data
14
19
10
18
10
0
0
2
2
20
11
19
12 11
0
1
1
9
Figure 2. Mode 1 Timing
Figure 3. Mode 2 Timing
Figure 4. Mode 3 Timing
20
21
12
20
Don’t Care
0
8
0
21
21
13
7
Don’t Care
14
- 10 -
1
6
31
15
31
0
5
0
0
0
0
19 18
19 18
23
4
Don’t Care
1
1
1
1
22
19
19
19 18
2
2
2
2
18
18
3
3
3
8
12
17
19
12 11
2
7
2
4
4
13
Rch Data
18
Rch Data
17
9
18
6
1
1
3
3
Rch Data
14
19
10
18
10
0
0
2
2
20
11
19
12 11
9
1
0
1
20
21
12
20
Don’t Care
0
8
0
21
13
21
7
Don’t Care
14
1
6
31
15
31
[AK4522]
0
5
1998/10
0
0
0
0
19
19
19
4
1
1
1
1