Calorimeter Trigger to L1-Board data transmission

1
Calorimeter Trigger to L1-Board data
transmission

• Umberto Marconi
• INFN Bologna

2
Interfacing to L1

• The upgrade path to the final L1 system foresees,
  at some point, the usage of the ECAL and HCAL
  clusters
• With this aim in mind the Selection Boards of
  the Selection Crate have been re-designed adding
  them the following features
• L0 buffer with tuneable depth (160 clock max)
• L0 derandomizer
• A GOL based output single channel optical
  transmitter
• The Selection Crate uses 8 Selection Boards
• We need 8 optical links to connect the
  Calorimeter Trigger to L1 through 1 L1 Board

3
Selection Board
28 I N P U T S
To the L1 Board 36?32-bits _at_40MHz
4
Calorimeter Clusters to the L1 Board
Calorimeter Trigger Selection Crate
Ribbon of 12 Optical Links 4 Not Connected
8
O-RX Card
8 GOL Optical Transmitters