AK4687 AKM [Asahi Kasei Microsystems], AK4687 Datasheet - Page 31

• Manufacturer Part Number: AK4687
• Description: Asynchronous Stereo CODEC with Capless Stereo Selector
• Manufacturer: AKM [Asahi Kasei Microsystems]

Figure 20
circuits, the optimum layout, power supply arrangements and measurement results.
Notes:
MS1307-E-00
(2) VSS1, VSS2, VSS3, VSS4 and VSS5 must be connected to the same analog ground plane.
(3) Digital input pins should not be allowed to float.
(1) Use low ESR (Equivalent Series Resistance) capacitors for the capacitors with (*). When using polarized
Power down
Reset and
capacitors, the positive polarity pin should be connected to the CP or VREF1/2 pin, and the negative polarity pin
should be connected to the CVEE pin.
shows the system connection diagram. An evaluation board is available which demonstrates application
Figure 20. Typical Connection Diagram (I
3.3V
10
11
12
1
2
3
4
5
6
7
8
9
MSN
SDTO
LRCK1
BICK1
MCLK1
PDN1
PDN2
MCLK2
BICK
LRCK
SDTI
CAD0
Controller
Micro
3.3V
SYSTEM DESIGN
10u
3.3V
AK4687EQ
2
+
C Control mode, CAD0 pin = “L”, Master mode)
- 31 -
Analog in
0.1u
1u (
1u
∗
(
∗
)
)
Analog Out
AVDD1
AVDD2
VREF1
VREF2
VSS1
VSS4
VSS5
VSS2
RO
LO
RI
LI
36
35
34
33
32
31
30
29
28
27
26
25
0.1u
0.1u
39k
39k
+
10u
+
10u
1u
1u
(
(
∗
∗
)
)
[AK4687]
3.3V
3.3V
2011/05