ak4122 AKM Semiconductor, Inc., ak4122 Datasheet - Page 21

• Manufacturer Part Number: ak4122
• Description: 24-bit 96khz Src With Dir
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
(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.
MS0267-E-03
LRCK
BICK(64fs)
SDTO(o)
LRCK
BICK(64fs)
SDTO(o)
Mode
0
1
0 1
0
23 22 21
SDTO-23:MSB, 0:LSB
1 2
ODIF
23 22
23:MSB, 0:LSB
2 3
0
1
Table 10. Audio Interface Format for PORT3
3
24bit, I
24bit, MSB justified
Lch Data
4
7
21
17
Figure 10. Mode 0 Timing
Figure 11. Mode 1 Timing
Output Format
Lch Data
3 2 1
6 5 4 3
22 23
18
2
19 20
S Compatible
24
0
25
- 21 -
31 0 1 2 3
0 1 2
23 22 21
23 22
LRCK
H/L
L/H
≥ 48fs
≥ 48fs
BICK
4
Rch Data
7 6 5 4 3
21
17
Rch Data
3
22
18 19 20
2
23
1
24
Default
0
25
31
0
0
23
1
1
[AK4122]
2004/08