The software and measurement services software included with NI-DAQmx provide a single programming interface for programming analog input, analog output, digital I/O, and counters.

The latest version of AxiomPlus motion-control system, Version 2.5x, now includes an analog input and ModBus RTU.

Analog Devices' Next-Generation Digital Signal Processors Provide Greater Internal Program and Data Memory for Automotive Audio Applications ...

I have my digital inputs properly assigned, and the receiver is processing them as "digital"--it's just that the digital inputs won't pass a signal to the analog rec outs. Believe me, I tried.