ak4566vn AKM Semiconductor, Inc., ak4566vn Datasheet - Page 15

• Manufacturer Part Number: ak4566vn
• Description: 20bit Stereo Codec With Built-in Ipga & Hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
n Serial Data Interface
The AK4566 interfaces with external system by using 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
followed by four zeros also could be input, 18bit data followed by two zeros also could be input. In all modes, the serial
data is MSB first and 2’s complement format.
REV 0.5
LRCK
BICK(64fs)
SDTO(o)
SDTI(i)
BICK(32fs)
SDTO(o)
SDTI(i)
LRCK
BICK(64fs)
SDTO(o)
SDTI(i)
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
8
20bit, MSB justified
20bit, MSB justified
20bit, MSB justified
IIS (I
4
8
16
8
12
11
15
19
7
3
7
2
17
9
Lch Data
13
Lch Data
S)
10
SDTO
14
18
6
2
6
18
10
14
13
5
9
1
19
11
Table 3. Audio Data Format
AKM CONFIDENTIAL
12 11
12 11
4
Figure 10. Mode 0 Timing
Figure 11. Mode 1 Timing
8
0
0
20
12
20
3
7
21
13
21
2
16bit, LSB justified
20bit, LSB justified
20bit, MSB justified
IIS (I
6
14
2
S serial data protocol. In Mode 2 and 3 of SDTI, 16bit data
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
4
8
32fs or
16
8
12
11
15
19
7
7
3
BICK
17
9
Rch Data
13
Rch Data
32fs
40fs
40fs
14
10
18
6
6
2
18
10
14
40fs
13
9
5
1
19
11
12 11
12 11
0
8
4
0
20
12
20
LRCK
H/L
H/L
H/L
L/H
3
7
21
13
21
2
6
14
Default
5
1
1
1
31
31
15
[AK4566]
4
0
0
0
0
0
0
2002/2
19
15
19
19
1
1
1