ak4140 AKM Semiconductor, Inc., ak4140 Datasheet - Page 17

• Manufacturer Part Number: ak4140
• Description: Digital Btsc Decoder
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The AK4140 supports cascading connection of up to four devices in a daisy chain configuration at TDM256 mode. In this
mode, 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 8 shows a connection example of a daisy chain.
MS0547-E-01
Cascade TDM Mode
LRCK
SCLK (256fs)
#1 SDTO(o)
#2 SDTO(o)
#4 SDTO(o)
#3 SDTO(o)
= #2 TDMIN(i)
= #3 TDMIN(i)
= #4 TDMIN(i)
15
15
15
15
AK4140 #1
AK4140 #2
32 BICK
32 BICK
32 BICK
32 BICK
14
14
14
14
L #1
L #2
L #3
L #4
0
0
0
0
Figure 9. Cascade TDM Connection Diagram
Figure 10. Cascade TDM Timing (4devices)
15
15
15
15
32 BICK
32 BICK
32 BICK
32 BICK
14
14
14
14
R #1
R #2
R #3
R #4
0
0
0
0
TDMIN
TDMIN
15
15
15
MCLK
SDTO
MCLK
SDTO
LRCK
LRCK
SCLK
SCLK
32 BICK
32 BICK
32 BICK
14
14
14
L #1
L #2
L #3
0
0
0
15
15
15
- 17 -
32 BICK
32 BICK
32 BICK
14
14
14
R #1
R #2
R #3
GND
256 BICK
0
0
0
15
15
32 BICK
32 BICK
14
14
L #1
L #2
0
0
15
15
32 BICK
32 BICK
14
14
R #1
R #2
256fs or 512fs
48kHz
256fs
(TDMIN of
AK4140 #3)
0
0
15
32 BICK
14
L #1
0
15
32 BICK
14
R #1
0
15
15
15
15
14
14
14
14
[AK4140]
2007/03