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[AK4675]
MS0963-E-00
2008/05
- 174 -
SYSTEM DESIGN
shows the system connection diagram for the AK4675. An evaluation board [AKD4675] is available which
demonstrates the optimum layout, power supply arrangements and measurement results.
Condition: Internal Full-differential Mic, External pseudo differential Mic, Receiver Output, I²C mode; Battery Monitor
is used; the PDNA pin of HP/SPK-Amp blocks is controlled by the GPO1 pin.
AVDD
RCN
VBATO VCOCBT
PVEE
SDTOA
SYNCA
CN
PDNA
VSS1
ROUT3
VCOMA
RIN4
PVDD
VSS2
TVDD2
VSS4
VBATIN
LOUT3
TEST6
DVDD
RCP
LIN4
MCKO
NC
RIN3
IN2
−
MCKI
TEST5
IN2+
SAIN3
LRCK
PDN
IN1+
IN1
−
NC
TEST3
LIN1A
MPWR ROUT2S
NC
VSS3
SPN
SYNCB
SDTIB
TEST4
SPP
TEST2
SDTI
TVDDA
AK4675EG
BICKA
MCKIA
SDA
SCL
BICK
VSS1A
AVDDA
SPIN
GPO1
LIN3
RIN1A
SAIN2
SAIN1
TEST
HPR
VCOM
VCOC
HPL
PVDDA
VSS3A
CP
SDTIA
GPO2
SAVDD
SDTOB
SDTO
BICKB
Top View
0.
1
u
2
.2u
0.
1
u
2
.2u
R C
Rp
Cp
2.
2u
0.
1u
0
.1u
Analog
2.6
∼
3.6V
10u
Headphone
Base Band
Digital
(Base Band)
1.6
∼
3.6V
Digital
Ground
Analog
Ground
0.
1
u
μ
P
Digital
(
μ
P & CPU)
1.6
∼
3.6V
CPU
0.1u
0.1u
Bluetooth
Module
Digital
(Bluetooth)
1.6
∼
3.6V
Battery or
AC Adaptor
3.0
∼
5.5V
10u
Receiver
Line In
1k
1k
2.
2k
External MIC
Internal MIC
DC
Measurement
Speaker
0.22u
0.22u
0.1u
0.1u
0.1u
MDT LOUT2S
NC SVDDA
VSS2A
TVDD3
Battery
0.1u
2.2u