Neoway N715-EA - Camera Interface Description

N715-EA Hardware User Guide
Chapter 5 Application Interfaces
Copyright © Neoway Technology Co., Ltd. All rights reserved.
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5.5.2 Camera
N715-EA provides a camera-dedicated SPI interface, supporting frame rates up to VGA@30fps. The
following shows the camera interface description.
Signal
Pin
I/O
Function description
Remarks
CAM_MCLK
10
DO
Camera main clock
-
CAM_I2C_SCL
11
DO
Camera I2C clock
Connect this pin to a
pull-up resistor
externally when used.
Leave this pin open if
unused.
CAM_I2C_SDA
12
B
Camera I2C data
CAM_SPI_CLK
13
DO
Camera SPI clock
-
CAM_SPI_DATA0
14
B
Camera SPI data 0
-
CAM_SPI_DATA1
15
B
Camera SPI data 1
-
CAM_PWDN
16
DO
Camera power down
-
CAM_RESET
120
DO
Camera reset
-
CAM_AVDD
17
PO
Camera analog power
Disabled by default,
after enabled, it outputs
2.8 V voltage.
CAM_DVDD
68
PO
Camera digital power
supply
Disabled by default,
after enabled, it outputs
1.8 V voltage.
5.6 Radio Frequency
Signal
Pin
I/O
Function description
Remarks
ANT_WLAN_BT
42
AIO
Shared antenna interface of
Bluetooth and Wi-Fi scan
50 Ω impedance
characteristics
ANT_MAIN
46
AIO
Main antenna pin
5.6.1 ANT_MAINAntenna Interfaces
The antenna interface of the N715-EA requires the 50 Ω impedance feature. The impedance of the
cable from the module interface to the antenna needs to be kept at 50 Ω impedance to ensure RF
performance. A matching network needs to be added in the middle. The matching network is generally