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L2 Buffer => L2 Trigger

C P U. C P U. C P U. C P U. L2 Buffer Board. Request. Event Control. Reply. Token Pull Protocol. L2 Trigger. L3 Trigger. Event Builder. IF. L2 Buffer => L2 Trigger. 1. Upon receipt of a ‘good’ event message from Event Controller, L2 Trigger sends

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L2 Buffer => L2 Trigger

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  1. C P U C P U C P U C P U L2 Buffer Board Request ... ... . . . . Event Control Reply Token Pull Protocol L2 Trigger L3 Trigger Event Builder IF L2 Buffer => L2 Trigger 1. Upon receipt of a ‘good’ event message from Event Controller, L2 Trigger sends a Region of Interest request message (token) the first CPU of related L2 Buffer Board. 2. The process packs associated data and then transfer the token with data to the next CPU. 3. The last CPU sends the packed data packet back to L2 trigger. Fang Sun, 22/2/2000

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