ak4569 AKM Semiconductor, Inc., ak4569 Datasheet - Page 15

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

ASAHI KASEI
The AK4569 interfaces with external systems via the BICK, LRCK, SDTO and SDTI pins. Four data formats are
available and are selected by setting DIF1 and DIF0 bits (Table 3). Mode 0 of SDTI is compatible with existing 16bit
DACs and digital filters. Mode 1 of SDTI is a 20bit version of Mode 0. Mode 2 of SDTI is similar to AKM ADCs and
many DSP serial ports. Mode 3 is compatible with the I
formats are also valid: 16-bit data followed by four zeros and 18-bit data followed by two zeros. In all modes, the serial
data is MSB first and 2’s complement format.
MS0292-E-01
LRCK
BICK(64fs)
SDTO(o)
SDTI(i)
BICK(32fs)
SDTO(o)
SDTI(i)
LRCK
BICK(64fs)
SDTO(o)
SDTI(i)
Serial Data Interface
Mode
0
1
2
3
DIF1
0
0
1
1
0
0
0
19
19 18
15
19
Don’t Care
Don’t Care
1
1
1
18
14
18
DIF0
0
1
0
1
2
2
2
12
20bit, MSB justified
20bit, MSB justified
20bit, MSB justified
IIS (I
8
4
8
16
8
12
11
15
19
7
3
7
2
17
9
13
Lch Data
Lch Data
S)
10
SDTO
14
18
6
2
6
18
10
14
13
5
9
1
19
11
Table 3. Audio Data Format
12
Figure 10. Mode 0 Timing
12
Figure 11. Mode 1 Timing
4
0
8
0
20
12
20
11
3
11
7
21
21
13
2
16bit, LSB justified
20bit, LSB justified
20bit, MSB justified
IIS (I
6
14
2
S serial data protocol. In SDTI Modes 2 and 3, the following
1
5
1
1
- 15 -
2
31
31
15
S)
4
0
SDTI
0
0
0
0
0
19 18
15 14
19 18
19 18
Don’t Care
Don’t Care
1
1
1
2
2
2
12
8
8
4
32fs or ≥ 40fs
16
8
12
11
15
19
7
3
7
≥ 32fs
≥ 40fs
≥ 40fs
BICK
17
9
Rch Data
13
Rch Data
10
14
18
6
6
2
18
10
14
13
5
9
1
19
11
12
12 11
0
4
8
0
20
12
20
LRCK
H/L
H/L
H/L
L/H
3
11
7
21
13
21
2
6
14
Default
5
1
1
1
31
31
15
[AK4569]
4
0
0
0
2005/07
0
0
0
19
15
19
19
1
1
1