ak4524 AKM Semiconductor, Inc., ak4524 Datasheet - Page 13

• Manufacturer Part Number: ak4524
• Description: 24bit 96khz Audio Codec
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Five serial modes selected by the DIF0 and DIF1 pins are supported as shown in Table 4. In all modes the serial data has
MSB first, 2’s compliment format. The SDTO is clocked out on the falling edge of BICK and the SDTI is latched on the
rising edge. The interface supports both master mode and slave mode. In master mode, BICK and LRCK are outputs and
the frequency of BICK is fixed to 64fs.
M0050-E-03
Mode
MCLK(Normal speed)
MCLK(4 times speed)
0
1
2
3
4
BICK(32fs)
SDTO(o)
SDTI(i)
BICK(64fs)
SDTO(o)
SDTI(i)
Audio Serial Interface Format
LRCK
1024fs
256fs
512fs
384fs
768fs
128fs
256fs
192fs
DIF2
0
0
0
0
1
0
0
23
15 14 13
23
SDTO-19:MSB, 0:LSB; SDTI-15:MSB, 0:LSB
Don’t Care
1
1
DIF1
22
22
0
0
1
1
0
* The frequency over 24.576MHz supports only external clock mode.
2
2
21
21
fs=176.4kHz
22.5792MHz
45.1584MHz
33.8688MHz
11.2896MHz
22.5792MHz
45.1584MHz
16.9344MHz
33.8688MHz
fs=44.1kHz
3
3
* X’tal mode operates from 11.2896MHz to 24.576MHz.
DIF0
15 14
15
0
1
0
1
0
7
7
17
Lch Data
9
14
6
6
10
18
13
13
5
5
24bit, MSB justified
24bit, MSB justified
24bit, MSB justified
24bit, MSB justified
Table 3. Master clock frequency
12.288MHz
24.576MHz
49.152MHz
18.432MHz
36.864MHz
24.576MHz
49.152MHz
36.864MHz
fs=192kHz
11
19
fs=48kHz
24bit, IIS (I2S)
Table 4. Audio data format
12
12 11
4
4
Figure 1. Mode 0 Timing
12
20
11 10
SDTO
3
3
13
2
2
14
30
- 13 -
1
1
9
15
31
MCLK(Double speed)
8
0
0
0
0
23 22
15
23 22
Don’t Care
24bit, MSB justified
16bit, LSB justified
20bit, LSB justified
24bit, LSB justified
1
1
14 13
256fs
512fs
384fs
N/A
N/A
24bit, IIS (I2S)
2
2
21
21
SDTI
3
15
15 14
7
7
17
Rch Data
9
14
6
6
22.5792MHz
45.1584MHz
33.8688MHz
10
18
fs=88.2kHz
13
13
5
5
19
N/A
N/A
11
LRCK
12
12 11
H/L
H/L
H/L
L/H
H/L
4
4
12
20
11
3
3
13
10
2
2
≥ 32fs
≥ 40fs
≥ 48fs
≥ 48fs
≥ 48fs
BICK
14
24.576MHz
49.152MHz
36.864MHz
fs=96kHz
9
1
1
15
31
[AK4524]
N/A
N/A
8
0
0
2004/01
at reset
0
0
15
23
23
1
1