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April 2003


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Sven Loechner <[log in to unmask]>
Reply To:
Mailing list for the users of the OTIS chip <[log in to unmask]>
Thu, 10 Apr 2003 13:58:42 +0200
TEXT/PLAIN (76 lines)
                        Minutes of the weekly

        Tracking Detector Readout Electronics Meeting, 3.4.2003

Participants: Daniel Baumeister, Harald Deppe, Sven Loechner, Uwe Stange,
Ulrich Uwer


- 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


- 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)

- 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
  -> 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

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)

- new recorded data (at 2.3V): not yet analysed
- data (1 hit, 3 trigger): not yet analysed



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