[Halld-online] Front-end board data format proposal and adoption

[Elliott Wolin]

Hi Fernando,

At recent meetings it was definitely not clear all the FPGA programmers 
had agreed to this format (Dave A wasn't sure, even Chris needed to talk 
to his guys).  The purpose of my note is to make sure this is clear to 
all involved and establish a timeline.

Also, Dave did not distribute the note to many in the Online group.

What do you mean by "the Hall D final request?"  If you are referring to 
the data format then Dave and Ed's proposal is what we want (to the best 
of my knowledge).  Or are you referring to final algorithms in the 
FPGA's?  If the latter I understand we are not ready to make a final 
request.

Thanks,



On 03/01/2013 03:23 PM, Fernando J Barbosa wrote:
> Hi Elliott,
>
> David already distributed this.
>
> For the latest on schedules, refer to my presentation to the 
> collaboration.
>
> FPGA programmers already know what to do regarding the data format. 
> The only part missing is the Hall D final request.
>
> Best regards,
> Fernando
>
>
> On 3/1/2013 3:07 PM, Elliott Wolin wrote:
>> Hi,
>>
>> Attached is Dave A's and Ed's proposal for a consistent data format 
>> for all JLab front-end modules.  At the last Online meeting we were 
>> led to believe all JLab modules that get read out over the VME 
>> backplane would implement this format (FADC25, FADC125, F1TDC, TI, 
>> TS, etc).  We are proceeding as if this is the case.
>>
>> Further, we expect to begin reading out detectors this summer, 
>> probably BCAL and FCAL first (check with Fernando for our crate 
>> installation schedule).  We would very much like this format to be 
>> implemented by the time the crates are installed.
>>
>> FPGA programmers:  please let me know ASAP if you are NOT planning to 
>> implement this format, or if you won't be able to implement it by the 
>> time your modules get installed in Hall D and we begin reading them 
>> out.  We very much do not want to have to deal with multiple formats 
>> for the same module (e.g. the June 2013 format, the Mar 2015 format, 
>> whatever).
>>
>> Finally, we are developing simulation, readout and analysis code that 
>> expects this format, so we need to know ASAP if it will change.
>>
>> Thanks,
>>
>

-- 

				Sincerely,
					Elliott


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  Those raised in a morally relative or neutral environment will hold
		    no truths to be self-evident.
				

Elliott Wolin
Staff Physicist, Jefferson Lab
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Suite 8 MS 12A1
Newport News, VA 23606
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