Minutes of the weekly Tracking Detector Readout Electronics Meeting, 3.4.2003 Participants: Daniel Baumeister, Harald Deppe, Sven Loechner, Uwe Stange, Ulrich Uwer Beetle: - pipeampreset patch for 1.3 version: possible to uncover pipeampreset line between Fastcontrol and Pipeamp on a Beetle 1.2 die. possible to change signal but by accident destroyed the chip => new chip sometime next week - deadline for a next possible submission: 16.06.2003 - 80 MHz: no news => simulation of power-consumption OTIS: Uwe: - start with programming of control logic OTIS 1.1 - change of readout: now internal latch of all datas before a readout - memory self-test: latched as well - new feature: readout of one triggered event via I2C - new debug options on chip - implemenation of new readout option (readout length not fixed) Harald: - external access to a hit reg. via pads should be possible Ulrich Uwer: - 12bit position Id. is not unique (because some I2C Id no. are prohibited) -> better: 13bit BUT unbeautiful other solution: Id adjustment via two group of external pads: - 12 pads for position - 7 pads for I2C address Uwe/Harald: should be enough space for additional id pads. - discussion about synchronisation possibilities: leading bit in front of a new, first readout Harald: outcome from FIB patch at Micrion: - some problems with the vacuum because of the used PCB - good solution with two holes on a die: first for a line-cut second for deposition - only Polyimide was removed with our laser in HD, not Nitride or Oxide (very good because than it is easier to deposit the new line) Harald/Jan: - new recorded data (at 2.3V): not yet analysed - data (1 hit, 3 trigger): not yet analysed Sven **************************************************************** Max-Planck-Institut fuer Kernphysik Tel. +49 (0)6221 54-9152 KIP / ASIC-Labor Fax. +49 (0)6221 54-9809 Sven Loechner Im Neuenheimer Feld 227 priv. Tel +49 (0)6221 878604 69120 Heidelberg email: [log in to unmask] www: http://wwwasic.kip.uni-heidelberg.de/lhcb ****************************************************************