ak4647 AKM Semiconductor, Inc., ak4647 Datasheet - Page 59

• Manufacturer Part Number: ak4647
• Description: Stereo Codec With Mic/hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Figure 45 and shows the system connection diagram for the AK4647. An evaluation board [AKD4647] is available which
demonstrates the optimum layout, power supply arrangements and measurement results.
MS0566-E-00
Power Supply
2.6 ∼ 3.6V
External MIC
Internal MIC
Line Out
Mono In
Notes:
- AVSS, DVSS and HVSS of the AK4647 should be distributed separately from the ground of external
- All digital input pins should not be left floating.
- When the AK4647 is EXT mode (PMPLL bit = “0”), a resistor and capacitor of VCOC pin is not needed.
- When the AK4647 is PLL mode (PMPLL bit = “1”), a resistor and capacitor of VCOC pin is shown in Table 4.
- When the AK4647 is used at master mode, LRCK and BICK pins are floating before M/S bit is changed to “1”.
controllers.
Therefore, 100kΩ around pull-up resistor should be connected to LRCK and BICK pins of the AK4647.
10u
200
200
Figure 45. Typical Connection Diagram (MIC Input)
1u
1u
1u
37
38
39
40
41
42
43
44
45
46
47
48 MPWR
10
10
NC
NC
ROUT
LOUT
NC
MIN
NC
RIN2/IN2−
LIN2/IN2+
LIN1/IN1−
RIN1/IN1+
0.22u
0.22u
Headphone
SYSTEM DESIGN
- 59 -
AK4647VQ
Top View
Cp
CSN/CAD0
CCLK/SCL
CDTI/SDA
DVDD
SDTO
DVSS
LRCK
BICK
SDTI
NC
NC
NC 13
Analog Ground
24
23
22
21
20
19
18
17
16
15
14
0.1u
Digital Ground
[AK4647]
DSP
2006/11
μP