Digital TV Tuner, Connector Assignments, From My 2012

TV TUNER R78 

Fig 1: Connector End View, TV Tuner -R78- (DTV)

Courtesy of AUDI OF AMERICA, LLC

COUPE 

1. Multi-Pin Connector, 12-pin
2. MOST Bus
3. CVBS output to the Information Electronics Control Module 1 -J794-
4. TV2/TV3 Connection from Antenna Amplifier 3 -R112- /Antenna Amplifier 2 -R111-
5. TV1 Connection from Antenna Amplifier 3 -R112-

SPORTBACK 

1. Multi-Pin Connector, 12-pin
2. MOST Bus
3. CVBS output to the Information Electronics Control Module 1 -J794-
4. TV2/TV3 connection from Antenna Amplifier 3 -R112- /Antenna Amplifier 4 -R113-
5. TV1 connection from the Antenna Amplifier -R24-

1 - Multi-Pin Connector, 12-Pin 

Fig 2: 12-Pin Connector

Courtesy of AUDI OF AMERICA, LLC

1. Terminal 30
2. Terminal 31
3. Ring-break Diagnostic Cable
4. Ground Shielding
5. Video OUT (Rear Seat Entertainment)
6. Ground Shielding
7. Audio OUT L (Rear Seat Entertainment)
8. Audio OUT R (Rear Seat Entertainment)
9. Ground Shielding
10. Audio IN L
11. Audio IN R
12. Video IN

2 - MOST Bus 

Fig 3: 2 - MOST Bus

Courtesy of AUDI OF AMERICA, LLC

1. Input
2. Output