AK4122 Datasheet, PDF (21/53 Pages) List of Unclassifed Manufacturers – 24 BIT 96KHZ SRC WITH DIR

ASAHI KASEI
[AK4122]
(3) PORT3
Two kinds of data formats can be chosen with the ODIF bit (Table 10). In both modes, the serial data is in MSB first, 2’s
compliment format. The SDTO is clocked out on the falling edge of BICK. The audio interface supports both master and
slave modes. In master mode, BICK and LRCK are output with the BICK frequency fixed to 64fs and the LRCK
frequency fixed to 1fs.
Mode
0
1
ODIF
Output Format
LRCK BICK
0
24bit, MSB justified H/L ≥ 48fs
1 24bit, I²S Compatible L/H ≥ 48fs
Table 10. Audio Interface Format for PORT3
Default
LRCK
0123
BICK(64fs)
17 18 19 20
31 0 1 2 3
SDTO(o)
23 22 21
7 6 54 3
23 22 21
SDTO-23:MSB, 0:LSB
Lch Data
Figure 10. Mode 0 Timing
17 18 19 20
7 65 4 3
Rch Data
31 0 1
23
LRCK
0123
BICK(64fs)
21 22 23 24 25
012
21 22 23 24 25
01
SDTO(o)
23 22
4 3 21 0
23 22
23:MSB, 0:LSB
Lch Data
Figure 11. Mode 1 Timing
4 32 1 0
Rch Data
MS0267-E-02
- 21 -
2004/07