BaBar Trigger Meeting Minutes for Tuesday August 26, 1997
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Material is on the Web, accessible from Trigger page buttons.

Aug 26	"L1T Status and Planning"

L1T Status
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1. EMT status					Paul Dauncey

Hardware: Senerath Galagedera reported progress in making a
light-weight fast control protocol that only uses command and
sub-command fields.  The FC FPGA is not simulated yet.  The command
module is in progress.  The schematic is going to the drawing office
for capture system.

Teststand: Neil Dyce reported a difficulty that meant he has to log
onto RAL.  There is no CPU at Bristol at this time.

2. DCT status					Fred Kral

TSF: Board Simulation is still going well.  The status was
communicated in a note by Krista Marks.  The team is almost finished
with unit delay and soon (beginning of next week) hopes to do
back-annotated simulation (full timing).  In parallel, the TSF is
being readied for layout.  Plan is to submit a netlist in around 2
weeks.

BLT: Gerber files have been submitted to a board vendor for
fabrication.  They are waiting for go-ahead from LBL.  The group will
finish reviewing the layout Tuesday, and barring any flaws, will tell
them to proceed.  Fabrication will be done with 2-week turn-around.

PTD: no activity.

Fast Control FPGA: Armin Karcher sent a note that there are two
changes in fast control about to be implemented.  1. (This should not
affect anybody) Currently the address was stored in the fc address
registers only during a write address command. In the future a write
command (which contains an address) also updates the address register.
2. The slower clocks (clk16...clk2) will no longer be multiply driven.
The BLT is already using externalclock drivers, so there is no netlist
change.  The PTD might need updating...  clk 2 will be attatched to
one of the freed-up clk4 pins.

Teststand: Ted Liu has written code and graphical interface for read
and write of all types of lookup tables.  Fixed a bug in the SVT
teststand code.  This completes the necessary functionality for the
initial BLT tests.  He will not proceed much further until BLT
prototype arrives.

3. Crate distribution status			Fred Kral

LBL group is just about to place an order for one front-end crate.

4. GLT status					Su Dong

Schematic: Jeff Olsen is testing routing the front-end of the GLT
since this is a challenging part.  A technician is involved in this
process.  Pins have been picked for J2 and J3 backplanes.  The GLTI is
already routed.

FPGAs: Main news is that the BMX logic equation has changed to be
outputting 20 phi bins (granularity of M clusters).  Simulation of
Match FPGA is in progress.

Teststand: Will use the playback method.  Plan to use the Drift
Chamber test setup, using the VROM (virtual ROM).  Su Dong has talked
to Dave Nelson and Dave Coupal about this.  Will need to fabricate
extra VROM for this purpose.  Jeff Olsen has a VME crate that probably
can be used for the test stand.

Manpower: Victor Serbo will be joining SLAC as a postdoc on September 1, 
splitting his time between BaBar (TRG) and SLD, his thesis experiment.
He will start work on the teststand software.

Planning
________

5. Planning "Online and Offline software" mtg	all
              phone meeting on September 9

The proposed agenda for September 9 was discussed.  Result of
discussions will be put into two documents: (1) a short updated agenda
and (2) a list of things needed for the September 9 meeting. Both are
in preparation.

6. Adding another meeting before October 7?	all
              September 23 is Caltech workshop
              maybe add September 30?

GLT PDR is tentatively scheduled for October 6.  GLT group will
probably ask for an informal meeting at LBL two weeks before the PDR.

EMT PDR will probably be mid October. Paul Dauncey advised not to tie
the dates of the two PDRs to each other, in case of delays.  He can
travel to attend both reviews.

Neither GLT or EMT groups wanted an extra phone meeting in September.

7. Comments on "who's who" and "tla" web pages all

People were encouraged to keep people and TLAs up to date in these web
pages.

8. Future Meetings and other dates

	o August 28 		L3T phone meeting
	o September 9		TRG phone meeting "Online and Offline Software"
	o September 11		L3T phone meeting
	o September 25		L3T phone meeting
	o October 6?		GLT PDR (tentative date)
	o Mid-October		EMT PDR; Online mini-review

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