AK4122 Datasheet, PDF (19/53 Pages) List of Unclassifed Manufacturers – 24 BIT 96KHZ SRC WITH DIR

ASAHI KASEI
[AK4122]
LRCK
012
BICK(64fs)
20 21 22 23 24
31 0 1 2
SDTI(i)
23 22
4 3 2 1 0 Don't Care 23 22
23:MSB, 0:LSB
Lch Data
Figure 3. Mode 1 Timing
20 21 22 23 24
31 0 1
4 3 2 1 0 Don't Care 23
Rch Data
LRCK
0123
BICK(64fs)
21 22 23 24 25
012
SDTI(i)
23 22
4 3 2 1 0 Don't Care 23 22
23:MSB, 0:LSB
Lch Data
Figure 4. Mode 2 Timing
21 22 23 24 25
01
4 3 2 1 0 Don't Care
Rch Data
LRCK
012
BICK(64fs)
89
24
31 0 1 2
89
24
SDTI(i)
Don't Care 23
8
23:MSB, 0:LSB
1 0 Don't Care 23
8
Lch Data
Figure 5. Mode 3 Timing
Rch Data
31 0 1
10
(2) PORT2
Four kinds of data formats can be chosen with the IDIF1-0 bits (Table 9). In all modes, the serial data is in MSB first, 2’s
compliment format. If PORT2 is selected the output port, the SDTIO is clocked out on the falling edge of BICK2, and if
PORT2 is selected the 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 and LRCK2 are output with the BICK2 frequency fixed to 64fs and the
LRCK2 frequency fixed to 1fs.
Mode
0
1
2
3
IDIF1
0
0
1
1
IDIF0
0
1
0
1
Output Format
Input Format
24bit, MSB justified 16bit, LSB justified
24bit, MSB justified 24bit, MSB justified
24bit, I²S Compatible 24bit, I²S Compatible
24bit, MSB justified 24bit, LSB justified
Table 9. Audio Interface Format for PORT2
LRCK
H/L
H/L
L/H
H/L
BICK
≥ 32fs
≥ 48fs
≥ 48fs
≥ 48fs
Default
MS0267-E-02
- 19 -
2004/07