BMW E65 User Manual download pdf (Page 15)

E65 Bus Systems

Example of CD Gateway Function

PDC

The audible PDC warning is output via the audio system speakers. If the car gets close to

an obstacle when the PDC is active, this is signalled by the relevant sensor to the PDC

control unit via the bi-directional data line. The PDC control unit calculates the distance from

the obstacle and places that information on the K-CAN S.

The Control Display (CD) receives the message and passes it on in its role as "gateway con-

trol unit" to the MOST bus. The Audio System Controller (ASK) receives the message from

the CD and calculates from it the required signal tone and frequency. On the basis of that

calculation, the ASK activates the mid-range speaker in the appropriate corner of the vehi-

cle. The audible signal is superimposed (mixed) over the current audio sound (radio, CD,

etc.).

KT-8532

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BMW E65 User Manual Page 15