Clear-Com 4000 series II, Technical Manual

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Technical Manual Issue 2.1 4000 Digital Series
II
Page 76 STA0381
4.3.4 PDE 4606A - Panel Communications Card (PCC)
Figure 71 - PDE4604A Panel Communications Card
The PCC sends audio data from each of 16 destination time-slots on the digital audio backplane to a
corresponding outstation. Control data sent from the Microprocessor card is multiplexed into the data
stream for each outstation.
It also performs the reverse operation i.e. it routes audio data from each of the 16 outstations to the
corresponding time-slot on the bus.
Control data is extracted from the bitstream from each panel and placed in a dual port buffer ready to
be read by the Microprocessor card.
Sub-fitted versions of this card are used in smaller matrices. The panel capacity is from 2-16 panel ports,
in pairs.
Two block diagrams are shown for this card; one shows the audio path and the other shows the control
path.
For a description of the functioning of the LEDs on the card refer to the
4000 Installation Guide.