AK4137EQ Datasheet, PDF (40/65 Pages) Asahi Kasei Microsystems – 32bit SRC with PCM/DSD conversion

[AK4137]
OLRCK
01
OBICK(64fs)
SDTO(O)
SDTO(O)
SDTO(O)
SDTO(O)
8 9 10 11 12 13 14 15 16 17
20 21 22 23
29 30 31 0 1
8 9 10 11 12 13 14 15 16 17
20 21 22 23
29 30 31 0 1 2
15 14
15:MSB, 0:LSB
17 16 15 14
17:MSB, 0:LSB
19 18 17 16 15 14
19:MSB, 0:LSB
23 22 21 20 19 18 17 16 15 14
23:MSB, 0:LSB
11 10 9 8
11 10 9 8
11 10 9 8
11 10 9 8
210
210
210
210
15 14
17 16 15 14
19 18 17 16 15 14
23 22 21 20 19 18 17 16 15 14
Lch Data
Rch Data
Figure 31. Stereo Mode, LSB justified Timing
11 10 9 8
11 10 9 8
11 10 9 8
11 10 9 8
210
210
210
210
256 OBICK
OLRCK(I)
OBICK (I: 256fso)
TDMIN(I)
SDTO(O)
23 22 0
L2
23 22 0
R2
23 22 0
L3
23 22 0
R3
23 22 0
L4
23 22 0
R4
23 22
23 22 0
L1
23 22 0
R1
23 22 0
L2
23 22 0
R2
23 22 0
L3
23 22 0
R3
23 22 0
L4
23 22 0
R4
23 22
32 BICK 32 BICK 32 BICK 32 BICK
Figure 32. TDM256 mode, 32-bit MSB justified Timing at Slave Mode
256 OBICK
OLRCK(I)
OBICK (I: 256fso)
TDMIN(I)
SDTO(O)
23 0
23 0
23 0
23 0
23 0
23 0
23
L2
R2
L3
R3
2 _L4
2 _R4
23 0
23 0
23 0
23 0
23 0
23 0
23 0
23 0
23
L1
R1
L2
R2
L3
R3
L4
R4
32 BICK 32 BICK 32 BICK 32 BICK
Figure 33. TDM256 mode 32-bit I²S Compatible Timing at Slave Mode
The figure above is when the AK4137 is in master mode and its output port is in SRC mode. ILRCK
input is directly output from the OLRCK pin and IBICK is directly output from the OBICK pin if the
output port is in Bypass (Master) mode.
Rev. 0.2
- 40 -
2014/06