I am working on a problem similar to this one here: AD73360 question - Q&A - Energy Monitoring and Metering - EngineerZone (analog.com)
I have two AD73360 in a cascade providing data and am having difficulty reliably finding when data from the first channel is sent. The RX Half of the SPORT is configured in serial mode with DMA enable. When the DMA starts, it may begin "mid-frame" and it is unknown which channel's data has been received first.
The linked post and AD73360 manual suggest I should treat data from the ADC as if it were in TDM format - but I can't find the right configuration for the SC573 SPORT to support this. The multi-channel mode of the SC573 seems to want a single frame sync followed by `n` channels of data, where the AD73360 gives a frame sync with each channel of data.
Any advice on how to have the SC573 SPORT understand when the first channel of data is sent from the AD73360?