AK4122A AKM [Asahi Kasei Microsystems], AK4122A Datasheet - Page 20

• Manufacturer Part Number: AK4122A
• Description: 24-Bit 96kHz SRC with DIR
• Manufacturer: AKM [Asahi Kasei Microsystems]

(2) PORT2
Four kinds of data formats are available and are selected by setting IDIF1-0 bits
in MSB first, 2’s compliment format. If PORT2 is selected as an output port, the SDTIO is clocked out on the falling edge
of BICK2, and if PORT2 is selected as an input port, the SDTIO is latched on the rising edge of BICK2. The audio
interface supports both master and slave modes. In master mode, BICK2 output is fixed to 64fs and the LRCK2 output
fixed to 1fs.
MS1076-E-01
Mode
0
1
2
3
IDIF1
LRCK
BICK(32fs)
BICK(64fs)
LRCK
BICK(64fs)
SDTIO(o)
SDTIO(i)
SDTIO(o)
SDTIO(i)
SDTIO(o)
SDTIO(i)
0
0
1
1
IDIF0
0
1
0
1
0
0 1
0
23 22
15 14
23 22 21
23 22
23 22
SDTIO-23:MSB, 0:LSB
SDTIO-15:MSB, 0:LSB
23:MSB, 0:LSB
1
1 2
Don't Care
24bit, I
24bit, MSB justified
24bit, MSB justified
24bit, MSB justified
2 3
2 3
21
13
Table 9. Audio Interface Format for PORT2
Output Format
2
4
4 3 2 1
S Compatible
20 21
15
15 14 13 12
Lch Data
Lch Data
7 6 5 4 3 2 1 0
7
3 2 1
17
9
14 13 12 11
Figure 6. Mode 0 Timing
Figure 7. Mode 1 Timing
6 5 4 3
10
18
22 23
11 12 13 14 15 0 1 2 3
19 20
0
0
24
Don't Care
- 20 -
10
24bit, I
24bit, MSB justified
16bit, LSB justified
24bit, LSB justified
9 8
1 0
31 0 1 2 3
31 0 1 2
Input Format
23 22
23 22
23 22 21
15 14 13
23 22 21
2
Don't Care
S Compatible
4
4
20 21
15 14 13 12 11
15 14 13
Rch Data
Rch Data
7 6 5 4 3 2 1 0
7 6 5 4 3
3
3
(Table
17
9
2
2
22
10
18 19 20
1
1
LRCK
11 12 13 14 15
23
H/L
H/L
L/H
H/L
12
9). In all modes, the serial data is
0
0
24
Don't Care
10
2 1 0
BICK
≥ 32fs
≥ 48fs
≥ 48fs
≥ 48fs
9 8
31
31
0
0
0
23
15
23
23
23
1
1
1
(default)
[AK4122A]
2010/05