ak4569 AKM Semiconductor, Inc., ak4569 Datasheet - Page 16

• Manufacturer Part Number: ak4569
• Description: 20-bit Stereo Codec With Ipga & Hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The AK4569 has a Digital High Pass Filter (HPF) to cancel DC-offsets in the ADC and IPGA. The cut-off frequency of
the HPF is 3.4Hz at fs=44.1kHz. This filter scales with the sampling frequency (fs).
MS0292-E-01
LRCK
BICK(64fs)
SDTO(o)
SDTI(i)
SDTI(i)
SDTI(i)
LRCK
BICK(64fs)
SDTO(o)
SDTI(i)
SDTI(i)
SDTI(i)
BICK(32fs)
SDTO(o)
SDTI(i)
Digital High Pass Filter
16bit
18bit
20bit
16bit
18bit
20bit
0
0
0
19
15
17
19
4
0
1
1
1
18
14
16
18
19
15
17
19
19 18
15
2
2
2
18
14
16
18
14
15
3
3
4
0
2
4
16
16
8
12
4
8
3
1
3
0
2
4
17
Lch Data
17
9
11
2
0
2
3
1
3
7
18
18
10
Lch Data
10
1
1
2
0
2
6
19
19
11
Figure 12. Mode 2 Timing
Figure 13. Mode 3 Timing
0
0
1
1
9
5
20
20
12
0
0
4
8
Don’t Care
Don’t Care
Don’t Care
21
13
3
7
Don’t Care
Don’t Care
Don’t Care
30
30
14
6
2
- 16 -
31
31
15
5
1
0
0
0
19 18
15
17
19
4
0
1
1
1
19 18
15 14
14
16
18
19 18
15
17
19
2
2
2
14
16
18
15
3
3
4
0
2
4
16
16
8
12
3
1
3
4
0
2
8
4
17
Rch Data
17
9
11
0
3
1
3
2
2
7
18
18
10
Rch Data
10
1
1
0
2
2
6
19
19
11
0
0
1
1
9
5
20
20
12
0
0
8
4
Don’t Care
Don’t Care
Don’t Care
21
13
3
7
Don’t Care
Don’t Care
Don’t Care
30
30
14
6
2
31
31
15
[AK4569]
5
1
2005/07
0
0
0
19
15
17
19
0
4
1
1
1