Hardware Implementation

The DCC has to deal with three types of incoming data and one type of outgoing data. All incoming data will use a number of special PDB lines as Databus, while the outcoming data will use CANbus. See Figure 5 for a schematic description of the boards themselves.

• Incoming Data
  1. DCC Signals : All parameters related with the operation of the DCC and the FEE crate itself will be stocked on the 8-bit ADC incorporated in the microproccesor of the DCC. See appendix B.
  2. DFB Signals : All parameters related with the operation of the DFB will be transfered via the PDB, after been addressed, to the DCC.
  3. DMB Signals : All sensor data coming for each sector will be fed to the DMB situated in one of the empty FrontEndCrate slots. Depending on the type of signal received an appropriate conversion to a common signal unit (Volts) have to be applied. All inputs are fed to a 16x Analog Multiplexer. The data then will be transfered via the PDB to the DCC.
• Outgoing Data

All data will be fed via the DCC towards the Environmental Crate. The CANbus protocol will be used as the communication tool.

• CANbus communication