MFDAU Interfaces	MFDAU Inputs
Harvard-BiPhase (DFDR) Recorder Inputs (up to 2) Recorder Outputs Harvard-BiPhase (DFDR/DAR) (up to 2) BipolarRZ (QAR) (1) Audio Synchronization (AMU-CVR) (1) PCMCIA ATA, Type II or form-factor (1) ARINC 429 Peripherals (up to 4)	Three wire analog input channels (up to 53) Aircraft Standard Communications Bus (ASCB) digital serial inputs (Version A, B or C) and CSDB (up to 8) Flight Data Entry Panel (FDEP) for documentary data inputs Shunt Series and AC Type Discrete inputs (up to 128) ARINC 429 inputs (up to 29)