2 General Description

2.1 Product perspective

In order to test various strategies for the ATLAS Dataflow, it is necessary to have a prototype version of the ROB. In the final system the ROB will be required to have high performance in both its input and output ports. It is unlikely that both these requirements can be met in a single module at the prototype stage and so, at this stage, the ROB has been sub-divided into two modules;

1. The ROB-IN, which is to have a high performance input port capable of meeting all the requirements of the final system in terms of its input capabilities.

2. The ROB-OUT, which is to have a high performance output port capable of meeting all the requirements of the final system in terms of its output capabilities.

In addition to its data input function and its capability to pass data to the ROB-OUT, the ROB-IN will also fulfil all other input requirements of the final system ROB. This includes interfacing with the Level-1 Trigger.

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