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Hardware Setup
If the onboard regulator for the 3_6V line does not supply 3.6 V, additional changes must be made. The
voltage from the 3_6V regulator can be measured from header J2, pin 12. If the measured voltage is not
3.6 V, make the following changes:
•
Change R46 to 200 kΩ
•
Change R47 to 40 kΩ
If using the Omnivision PIR and LED board, this enables the OV788 to sample sound from the onboard
microphone. The sound is sampled directly by the OV788 for this reference. The audio data is sent to the
CC3220 over the SPI interface with the video data. Currently the microphone is the only functional
component on this board.
There are some hardware considerations when using this:
•
Mount a microphone on MIC2
•
To reduce interference and get the best audio quality, twist the cable to the Omnivision reference
board tightly, as shown in
6
SimpleLink™ CC3220-OV788 Audio/Video Streaming Reference
Figure
4.
Figure 4. Cable Twist
Copyright © 2018, Texas Instruments Incorporated
www.ti.com
SWRA599 – March 2018
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