L1FW: towers, tracks, correlations D0 Trigger System L2FW:Combined objects (e, m, j) L1FW: towers, tracks, correlations L1CAL L2STT Global L2 L2CFT L2PS L2Cal L1 CTT Muon L1FPD Detector L1 Trigger L2 Trigger 7 MHz 5-10 kHz CAL FPS CPS CFT SMT FPD 1000 Hz
L2STT L1CTT SMT L3 L2CTT preprocess SMT data find clusters associate clusters with L1CTT tracks L3 fit trajectories L2CTT
LVDS serial links for communication between boards L2STT Crate CPU 1 2 spare 3 VBD 4 5 6 7 STC 8 9 10 11 12 13 FRC 14 15 16 TFC 20 19 18 17 21 terminator Sector 1 Sector 2 LVDS serial links for communication between boards
PCI busses for onboard communication Motherboard SCL receiver main logic PCI busses for onboard communication link tx/rx L3 buffer control
L2STT flow chart
D0 trigger architecture L1 Trigger L1 Global L2 Stage L2 Preprocessors Buffers L0 Silicon Fibers Preshw Muon Cal p-bar p L3 Processors 10 kHz 1kHz 10-20Hz tape 250kb/evt Trigger Framework