[time-nuts] Divide by five

Robert Darby bobdarby at triad.rr.com
Sat Nov 8 12:21:44 EST 2014


As a dumb question does $15 for this item :

  XC9572XL CPLD development board v1b

  http://www.seeedstudio.com/depot/XC9572XL-CPLD-development-board-v1b-p-799.html

make any sense?  It's 5V tolerant and has 5ns pin to pin logic. JTAG  or 
bus pirate programming.

Bob Darby

On 11/8/2014 10:53 AM, Neil Schroeder wrote:
> I would very, very, very much enjoy perusing that library, if you'd be as
> kind ;-)
>
> Particularly just a few basics for the Xilinx. I also have a few CVHD-950s
> In need of some parenting!
>
> On Saturday, November 8, 2014, Gerhard Hoffmann <dk4xp at arcor.de> wrote:
>
>> Am 08.11.2014 um 09:46 schrieb Said Jackson via time-nuts:
>>
>>> ....
>> The  x163 seems to be in better supply than the '161.
>>
>> For example: < http://www.nxp.com/documents/data_sheet/74LVC163.pdf >
>> At 3.0 - 3.6V  150 MHz guaranteed, 200 MHz typ.
>>
>> I have done a fanout board for the Xilinx Coolrunner XC2C64 to 100 mil
>> square pads.
>> The small chip in the Background is the core voltage regulator, The plug
>> fits to
>> the Xilinx USB configuration cable. Enough to create 1pps from 100 MHz.
>>
>> < https://picasaweb.google.com/lh/photo/4Bpcfouj8WH0shNGIyuVUtMTjNZETY
>> myPJy0liipFm0?feat=directlink >
>>
>> The other small boards are 100 MHz Crystek CVHD-950 locked to 10 MHz using
>> LVC163
>>
>> Doubler 100 MHz ---> 200 MHz  13dBm in -> 13 dBm out using 2*BF862
>> push/push grounded gate
>>
>> Doubler 200 MHz -> 400 MHz  13 dBm in 13 dBm out, HSMS-282F, SAW Filter on
>> 400 MHz, ERA-4 amplifier
>>
>> All are week-enders, Layout printed on Laser printer to foil,
>> presensitized FR-4 0.5mm from Bungard, home etched.
>> The bottom side ist ground only.
>> I can use these snippets in my Altium Designer to combine them to larger
>> projects; the modules keep
>> their layout and need only to be handled as a block. I have collected
>> quite a block library over the years. :-)
>>
>> regards, Gerhard
>>
>>
>>
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