[AK4127]
■ Cascade TDM Mode
The AK4127 supports cascading connection of up to four devices (8channels) in a daisy chain configuration at TDM
mode. In this mode, the SDTO pin of device #N is connected to TDMIN pin of device #(N+1). The device can output up
to 8ch TDM data multiplexed with TDMIN data. Figure 11shows a connection example of a daisy chain.
256fs or 512fs
48kHz
OMCLK
OLRCK
OBICK
AK4127 #1
256fs
TDMIN
SDTO
GND
OMCLK
OLRCK
OBICK
AK4127 #2
TDMIN
SDTO
(TDMIN of AK4127 #3)
Figure 11. Cascade TDM Connection Diagram
256 BICK
OLRCK
OBICK(256fs)
23 33
0
23 22
0
23 22
#1 SDTO(o)
L #1
32 BICK
R #1
32 BICK
= #2 TDMIN(i)
23 22
0
23 22
0
23 22
0
23 22
0
23 22
23 22
23 22
#2 SDTO(o)
L #2
32 BICK
R #2
32 BICK
L #1
32 BICK
R #1
32 BICK
= #3 TDMIN(i)
23 22
0
23 22
0
23 22
0
23 22
0
23 22
0
23 22
0
#3 SDTO(o)
L #3
32 BICK
R #3
32 BICK
L #2
32 BICK
R #2
32 BICK
L #1
32 BICK
R #1
32 BICK
= #4 TDMIN(i)
23 22
0
23 22
0
23 22
0
23 22
0
23 22
0
23 22
0
23 22
0
23 22
0
#4 SDTO(o)
L #4
32 BICK
R #4
32 BICK
L #3
32 BICK
R #3
32 BICK
L #2
32 BICK
R #2
32 BICK
L #1
32 BICK
R #1
32 BICK
Figure 12. Cascade TDM Timing (4devices)
MS0593-E-01
2007/07
- 18 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
