ak4645 ETC-unknow, ak4645 Datasheet - Page 82

• Manufacturer Part Number: ak4645
• Description: Stereo Codec With Mic/hp-amp
• Manufacturer: ETC-unknow

ASAHI KASEI
Figure 73 and Figure 74 shows the system connection diagram for the AK4645. An evaluation board [AKD4645] is
available which demonstrates the optimum layout, power supply arrangements and measurement results.
MS0543-E-00
Power Supply
External MIC
2.6 ∼ 3.6V
Internal MIC
Speaker
Mono In
Line In
Notes:
- AVSS and HVSS of the AK4645 should be distributed separately from the ground of external controllers.
- All digital input pins should not be left floating.
- When the AK4645 is EXT mode (PMPLL bit = “0”), a resistor and capacitor of VCOC pin is not needed.
- When the AK4645 is PLL mode (PMPLL bit = “1”), a resistor and capacitor of VCOC pin is shown in Table 5.
- When the AK4645 is used at master mode, LRCK and BICK pins are floating before M/S bit is changed to “1”.
Therefore, 100kΩ around pull-up resistor should be connected to LRCK and BICK pins of the AK4645.
10u
Figure 73. Typical Connection Diagram (AIN3 bit = “0”, MIC Input)
SPK-Amp
External
25
26
27
28
29
30
31
32
LIN4
ROUT
LOUT
MIN
RIN2
LIN2
LIN1
RIN1
SYSTEM DESIGN
10 0.22u
10 0.22u
1u
- 82 -
Headphone
AK4645EN
Top View
Cp
TVDD
DVDD
BICK
LRCK
SDTO
SDTI
CDTI
CCLK
16
15
14
13
12
11
10
9
Analog Ground
0.1u
0.1u
Power Supply
Digital Ground
1.6 ∼ 3.6V
[AK4645]
DSP
2006/09
µP