Requirements

  • Cascadable system (a lot of TRBs have to be connected)
  • Node-to-Node length at least 100m
  • Low latency (< 1us)
  • Small cable, optical links or short cables
  • One network for the trigger distribution and the IPU data
  • Flexible for any future extension
  • No data loss on the network layer, error detection and correction
  • System should recover from any problem

Concept overview

* Overview:
Overview

There is also the option to keep the old CTU and build an old-to-new converter (test board for the new TRB).

The stack of this concept consists of 3 simple layers:

  • The physical/link layer: Physical transportation of the serial bitstream, serdes chips, clock recovery: NewTriggerBusMedia
  • The network layer: How the HUBs interact with each other, handshake protocol, address and data transportation: NewTriggerBusNetwork
  • The transport layer: What is inside the data paket, e.g. how trigger tag and code, status (busy) information: NewTriggerBusAPI

Have a look to the NewTriggerBusToDo
Topic revision: r2 - 31 Dec 2009, JanMichel
 
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