DESCRIPTION
The Linedriver handles all analog input- and output-signals for the Digital Carradio Signal Processor TDA7501. The device contains four independent input multiplexers to select the sources for the DSP’s four AD-converters. Four additional gain stages allow an adaptation to run the ADCs in best S/N condition.

■ INPUTS:
    - QUASI DIFFERENTIAL STEREO INPUT FOR CD
    - DIFFERENTIALSTEREO INPUTS FOR PHONE, NAVIGATION, FM, AM
    - SINGLE-ENDED INPUT FOR CASSETTE
    - FOUR INDEPENDENTINPUT MULTIPLEXER AND GAIN STAGES
    - ENVELOPE-DETECTOR FOR AM-NOISEBLANKING
    - MIXING OF PHONE AND NAVIGATION
    - DC-CONNECTION TO DSP
    - DUAL MPX INPUTS
■ OUTPUTS:
    - 6 OUTPUTCHANNELS WITH INDEPENDENT VOLUMECONTROL
    - 4MAINOUTPUTCHANNELSWITHADDITIONAL INPUT SELECTORFORPHONE AND/OR NAVIGATIONOR CD
    - OUTPUTS FOR UP TO 4V rms
    - AC-CONNECTIONFROM DSP
■ DIGITAL CONTROL:
    - SPI-BUS OR I2C BUS INTERFACE (SELECTABLE)
    - DIRECT MUTE FOR THE OUTPUT STAGES AND/OR HIGH IMPEDANCE MPX MUTE