ASAHI KASEI
[AK4522]
LRCK(i)
0
1
2
12
13
14
20
21
31
0
1
2
12
13
14
20
21
31
0
1
SCLK(i:64fs)
SDTO(o)
SDTI(i)
19 18
8
7
6
0
19 18
8
7
6
0
19
19 18
12 11
1
0
19 18
12 11
1
0
Don’t Care
19:MSB, 0:LSB
Don’t Care
Lch Data
Rch Data
Figure 2. Mode 1 Timing
LRCK(i)
0
1
2
17
18
19
20
21
0
1
2
17
18
19 20
21
0
1
SCLK(i:64fs)
SDTO(o)
SDTI(i)
19 18
19 18
3
3
2
2
1
1
0
0
19 18
23 22
3
3
2
2
1
1
0
0
19
19
Don’t Care
Don’t Care
19:MSB, 0:LSB
Lch Data
Rch Data
Figure 3. Mode 2 Timing
LRCK(i)
0
0
1
1
2
3
3
9
10
11
12
13
14
15
0
1
2
9
10
11
12
13 14
15
0
1
1
SCLK(i:32fs)
SDTO(o)
SDTI(i)
4
19 18
12 11 10
9
8
7
6
5
4
19 18
12 11 10
9
8
7
6
5
4
2
17
18
19 20
21
31
0
1
2
3
17
18 19
20
21
31
0
SCLK(i:64fs)
SDTO(o)
19 18
19 18
4
4
3
3
2
2
1
1
0
0
19 18
19 18
4
4
3
3
2
2
1
1
0
0
Don’t Care
Don’t Care
SDTI(i)
19:MSB, 0:LSB
Lch Data
Rch Data
Figure 4. Mode 3 Timing
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-02
2012/01
- 10 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
