The datasheet for that receiver chip is: http://electrohome.pbworks.com/f/A7201+Datasheet+v0.5+(1).pdf
By checking the connections, particularly the SPIS (SPI Select) pin you should be able to tell if it is using SPI or raw data output.
The datasheet for that receiver chip is: http://electrohome.pbworks.com/f/A7201+Datasheet+v0.5+(1).pdf
By checking the connections, particularly the SPIS (SPI Select) pin you should be able to tell if it is using SPI or raw data output.