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LDO17_2V85
129
MIPI_CSI1_CLKN
70
MIPI_CSI1_CLKP
71
MIPI_CSI1_LN0N
72
MIPI_CSI1_LN0P
73
CAM1_MCLK
75
CAM1_RST
81
CAM1_PWD
82
CAM_I2C_SCL
83
CAM_I2C_SDA
84
The following is a reference circuit design for front camera interface, by taking the connection with
SP2508 camera as an example.
MIPI_CSI1_CLKP
MIPI_CSI1_CLKN
MIPI_CSI1_LN0P
MIPI_CSI1_LN0N
CAM1_MCLK
CAM_I2C_SCL
CAM_I2C_SDA
CAM1_PWD
CAM1_RST
Module
Figure 23: Reference Circuit Design for Front Camera Interface
SC20-WL_Hardware_Design
2.85V output power supply
PO
for AVDD of camera
MIPI CSI clock signal
AI
(negative)
MIPI CSI clock signal
AI
(positive)
MIPI CSI data signal
AI
(negative)
MIPI CSI data signal
AI
(positive)
DO
Clock signal of front camera
DO
Reset signal of front camera
Power down signal of front
DO
camera
OD
I2C clock signal of camera
OD
I2C data signal of camera
FL1
1
3
2
4
FL2
1
3
2
4
EMI Filter
LDO6_1V8
R1
R2
2.2K
2.2K
LDO17_2V85
LDO6_1V8
C1
2.2uF
Smart Wi-Fi Module Series
SC20-WL Hardware Design
I
max=100mA
O
2.85V normal voltage.
Vnorm=2.85V
I
max=300mA
O
1
DGND
2
DGND
3
CLKP
4
CLKN
5
DGND
6
DGND
7
MDP0
8
MDN0
9
DGND
10
DGND
11
NC(MDP1)
12
NC(MDN1)
13
DGND
14
DGND
R3
15
MCLK
16
0R
DGND
17
SCL
18
SDA
19
PWDN
20
RST
21
AVDD2V8
22
AGND
23
DGND
24
DOVDD1V8
25
NC
C2
C3
C4
Front Camera
100nF
100nF
1uF
54 / 81
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