The XC2C64 has 64 cells and the XC9572 has 72. I recommend to choose something larger when buying evaluation boards: just in case you think to go beyond the PPS divider and think to put in also a time interval counter. Going from the PPS divider to the basic hardware that can make your GPSDO is a very simple step.
On Wed, Nov 21, 2012 at 8:47 PM, cfo <xne...@luna.dyndns.dk> wrote: > On Tue, 20 Nov 2012 16:13:51 -0500, EWKehren-YDxpq3io04c wrote: > > > I did mention a MAX 3000 implementation of a 1 pps generator. The > > attached picture shows the prototype. This came about to generate timing > > signals to test the counters. It is a TADD-2 Mini on steroids. Besides > > the Wenzel input and 4 outputs parraleled with resistors it has > > presently 6 inputs for output selecting or synchronizing and 6 > > additional outputs. Example duty cycle, frequency out of the 50 > > ohm.This is a good example of the flexibility of the use of this IC. If > > there is interest maybe we can agree on a couple of versions and find > > some one in the US and some one in Europe to sell a kit. Juerg and I are > > not getting in the kit business but it may be a precursor when D/M > > systems will roll out. At 25 $ in the US and 20 Euro in the EU who ever > > does it will make a little money for their trouble. That price would > > include shipping! > > Members can also use the unit to knit their own version, IC's can be > > reprogrammed. This is also the board that was used to do the jitter > > test. Passed with flying colors. Let me know what you think but I will > > not take orders, but find a way to make it available if there is > > interest Bert Kehren. > > Maybe it would be possible to use this board for the logic (Xilinx > though) , but it's available in US & EU > > http://dangerousprototypes.com/docs/ > CPLD:_Complex_programmable_logic_devices > http://www.seeedstudio.com/depot/xc2c64a-coolrunnerii-cpld-development- > board-p-800.html?cPath=174 > http://www.seeedstudio.com/depot/xc9572xl-cpld-development-board- > p-799.html > > > That would take care of the SMD stuff > > CFO > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.