2 video cameras to the video decoder on the ADSP-BF561 Evaluation board?

Document created by analog-archivist Employee on Feb 23, 2016
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Is it possible to connect 2 video cameras to the video decoder on the
ADSP-BF561 Evaluation board?

 

You should be able to make use of two video channels out of the ADV7183A, as
input video sources to the ADSP-BF561 on the EZ-KIT board. The ADV7183A decoder
has an integrated analog muxing section that allows more than one source of
video signal to be connected to the decoder. However, you need to understand
what is meant by "muxing".

The ADV7183A includes a multiplexer to link either of four analog input
channels to the ADCs within the converter. By software (via I2C interface) you
can choose which of the four analog inputs to convert in a digital video
stream. Nevertheless, just a single analog input channel can be converted at
any time. The goal is to connect four cameras to the converter and to choose
the one to record. Turning from one camera to another one will cause the video
stream to collapse. The converter will take a minimum of one or two video
frames/fields to lock to the next camera signal again.

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