Volkswagen RCD550 Installation Manual - page 3
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4. Video switch among different inputs
The user may press the LEFT key to switch the inputs of
interface.
The RIGHT arrow key can be used to pop up the
multimedia control icons, the user pressed the down
arrow key to execute the icon.
The user may also use extra keypad to switch the inputs,
in this case, the white wire of the 6P wire between CAN
box and interface should be cut off.[suggested.]
3. CTRL port
There is a 8‐pin extra CTRL port on the interface, the RCD550 is already using it to switch the touch panel 4P
signals.
The installer does not need to use the other functions of this 4P in normal situation. For experienced users, this
port may be used to get extra functions.
Ctrl port signal definitions:
Pin 1,2
+5V output voltage for sound‐switch‐relay, when AV1 is selected=5V, 0V when AV2 selected. Max 3A.
3:
Constant +5V
Max .2A
4,8
Ground
5:
Dedicated control bus for camera。
Should not be connected to GND, otherwise CPU will halt.
6:
7
+5V output when in interface mode, 0V when in Car mode.
Note2:
There is a gray wire between the can box and interface box, which is used to deliver control data, so that
multimedia icons will pop out and be executed. This wire can also deliver terminal‐mode control data. So a 3
rd
party
computer can control this interface.[ terminal mode like: to directly go to RGB input, to AV1 input, AV2
input,reverse camera input], to get the full implementation of fosp interface terminal mode operations, please
contact fosp sales people.
The programming of IR code:
There are >10 types of DVD, NAVI, and Tuners’ IR code are stored inside the interface. The installer just adjusts the options to select to
wanted one, then it works. If the wanted type is not there, he may set the option to be “Prog” in the menu.
When programming, switch the input to AV1, and set DIP6 down once, then the control icons will be shown, and one of the them will
be blinking. Point the IR remote controller to the IR port of interface, the blinking icon will be moved to the next one. Which means
one code is programmed. Repeat this step until all icons are programmed.
The programming of AV2 is the same as above.