AK7755EN_16 Datasheet, PDF (101/109 Pages) Asahi Kasei Microsystems – DSP with Mono ADC Stereo CODEC + Mic/Lineout Amp

10. Recommended External Circuits
■ Connection Diagram
1. I2CSEL pin = “L”, LDOE pin = “L”
CLOCK
&
Audio I/F
9
8
7
CLKO
BICK
16
15
LRCK
SDOUT1
14
5
4
SDOUT2
SDOUT3
SDIN1
SDIN2
I2CSEL ³
LDOE ²³
CSN ²⁰
SI ¹⁹
SCLK ¹⁸
SO ¹⁷
STO/RDY ⁶
“L”
“L”
uP
1
1
1
1
1
Digital Core 1.2V
10
0.1
31
IN4/INN2
32 _IN3/INP2
33 _IN2/INN1
34 _IN1/INP1
35 _LIN
AK7755
24
DVDD
PDN ²²
OUT1 ²⁸
OUT2 ²⁶
OUT3 ²⁷
VCOM ¹
RESET
CONTROL
1
1
1
2.2
Digital IO 1.8～3.3V
10
0.1
12
TVDD
13,25 _DVSS
AVDD ^21,29,36
10 0.1
AVSS ^2,30
Analog +3.3V
Rd
XTO ¹⁰
XTI ¹¹
CL=22pF/15pF
CL=22pF/15pF
Figure 79. Serial Interface Connection with External Power Supply
2. I2CSEL pin = “L”, LDOE pin = “H”
CLOCK
&
Audio I/F
1
1
1
1
1
1
9
8
7
16
15
14
5
4
CLKO
BICK
LRCK
SDOUT1
SDOUT2
SDOUT3
SDIN1
SDIN2
I2CSEL ³
LDOE ²³
20
CSN
SI ¹⁹
SCLK ¹⁸
SO ¹⁷
STO/RDY ⁶
“L”
“H”
uP
31 _IN4/INN2
32 _IN3/INP2
33 _IN2/INN1
34
IN1/INP1
35 _LIN
AK7755
24
AVDRV
PDN ²²
OUT1 ²⁸
OUT2 ²⁶
OUT3 ²⁷
VCOM ¹
RESET
CONTROL
1
1
1
2.2
Digital IO 1.8～3.3V
10
0.1
12
TVDD
13,25 _DVSS
21,29,36
AVDD
10 0.1
AVSS ^2,30
Analog +3.3V
Rd
XTO ¹⁰
XTI ¹¹
CL=22pF/15pF
CL=22pF/15pF
Figure 80. Serial Interface Connection with Internal LDO
014006643-E-00
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[AK7755]
2014/10