VCC Hardware Production Status Production VCC Locations and

VCC Hardware Production Status Production VCC Locations and Dispositions Location D i s p o s i t i o n CERN OSU RICE Florida Total 50 23 1 1 75 In Per. Crate ? --- --- ? Test Setups ? 2 1 1 4+ Waiting for BGA Replacement --- 3 Testing/Repair/Burn-in --- 15 Ready to Ship --- 3 All components have arrived and all boards are stuffed. Most of the boards currently being tested should be ready to ship by the end of this week. J. Gu EMU Meeting, CERN Sept. 18, 2006 1

Reported VCC Related Issues Ref. # 1 Issue Cause Resolution DMB EPROM load Sperious Bus Request when executing ‘DELAY’ command Vcore boosted (improved failure rate) ISE 8. 202 i (gone with new compile) 2 TMB-CFEB timing test Multiple DLink driver conflicts. Changes to ethreset 3 9 TMBs-to-MPC test VME SYSCLK disabled (problem for MPC during Hard Resets) Changed power up configuration to enable SYSCLK Valid data flag not set Vcore boosted (problem gone) 4 BERR/missing data • Vcore (1. 5 V +/- 5%) was out of tolerance due to Vdrop across inductor. • Boosting Vcore solved issue 4 but only decreased the frequency of issue 1. • Recompiling (with no logic changes) using ISE 8. 202 i appears to have ‘fixed’ issue 1 but other compile issues have arisen (still investigating). • Issue 2 has not reoccurred and does not appear to be a VCC issue. • Issue 3 was simply a user configuration setup issue. J. Gu EMU Meeting, CERN Sept. 18, 2006 2

VCC Items to be done Replace resistor for 1. 5 V regulator. Add 10 u. F Tant. bypass caps for oscillators (these were omitted during original board assembly). Continue firmware development to provide packet acknowledgements and ethernet firmware downloading. J. Gu EMU Meeting, CERN Sept. 18, 2006 3