ak4556 AKM Semiconductor, Inc., ak4556 Datasheet - Page 16

• Manufacturer Part Number: ak4556
• Description: 3v 192khz 24bit ?? Codec
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The DAC includes a digital de-emphasis filter (tc=50/15µs) via an integrated by IIR filter. This filter corresponds to three
frequencies (32kHz, 44.1kHz, 48kHz). This setting is done by DEM0 and DEM1 pins. This filter is always OFF in double
and quad speed modes.
MS0559-E-00
BCLK(64fs)
SDTO(o)
SDTI(i)
LRCK
BCLK(64fs)
SDTO(o)
SDTI(i)
BCLK(64fs)
SDTO(o)
SDTI(i)
LRCK
LRCK
De-emphasis Filter
0
0
0
23:MSB, 0:LSB
23
23 22
23
23:MSB, 0:LSB
Don’t Care
1
1
1
22
23 22
23
23:MSB, 0:LSB
22
2
2
2
22
18
3
16 15 14
5
5
8
19
19
23
4
4
5
5
Lch Data
9
20
20
Lch Data
22
3
3
4
4
10
21
21
Lch Data
DEM1
Table 5. De-emphasis filter control
2
3
2
3
0
0
1
1
22
22
Figure 8. Mode LJ/RJ Timing
12 11
0
Figure 7. Mode I
1
Figure 6. Mode LJ Timing
2
1
2
20
23
23
1
0
1
0
21
24
24
Don’t Care
0
0
25
25
DEM0
- 16 -
1
Don’t Care
0
1
0
1
31
0
2
S Timing
0
0
0
23 22
23 22
23
Don’t Care
1
1
1
22
23 22
23
44.1kHz
2
48kHz
32kHz
Mode
2
2
OFF
22
18
3
16 15 14
5
5
8
19
19
23
4
5
4
5
Rch Data
9
20
Rch Data
20
22
3
4
3
4
10
21
21
Rch Data
2
3
2
3
22
22
12 11
0
1
1
2
2
20
23
23
1
0
0
1
21
24
24
Don’t Care
0
0
25
25
Don’t Care
1
31
[AK4556]
0
2006/11
0
0
0
23
23
1
1
1