<div dir="ltr"><div><div class="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>Comment and critique and double-checking welcome and encouraged.<br><br>This adaptor board was discussed in Slack starting in May 2018. I have collected the links and the definitions, but this writeup needs careful checking before we engage in layout efforts, in order to avoid mistakes. <br><br>-=-=-=-=-=-=-=-=-=-=-=-=-=<br><br>Proposal:</div><div><br></div><div>Open Research Institute to build a board for Phase 4 Ground. This is a mezzanine according to the 96Boards standard.</div><div><br></div><div><a href="https://github.com/96boards/mezzanine-community/blob/master/CONTRIBUTE.md">https://github.com/96boards/mezzanine-community/blob/master/CONTRIBUTE.md</a></div><div><br></div><div>The function of the board is an adapter between the Ultra96 development board...</div><div><br></div><div><a href="https://www.avnet.com/opasdata/d120001/medias/docus/187/AES-ULTRA96-G_2018-03-19.pdf#%5B%7B%22num%22%3A37%2C%22gen%22%3A0%7D%2C%7B%22name%22%3A%22Fit%22%7D%5D">https://www.avnet.com/opasdata/d120001/medias/docus/187/AES-ULTRA96-G_2018-03-19.pdf#%5B%7B%22num%22%3A37%2C%22gen%22%3A0%7D%2C%7B%22name%22%3A%22Fit%22%7D%5D</a></div><div><br></div><div>...and FMC daughter cards.</div><div><br></div><div>The standard for FMC is described here:<br><br></div><div><a href="https://www.samtec.com/standards/vita/fmc">https://www.samtec.com/standards/vita/fmc</a></div><div><br></div><div>Specifically, we want to enable the Ultra96 to talk to the AD-FMCOMMS4-EBZ</div><div><br></div><div><a href="https://wiki.analog.com/resources/eval/user-guides/ad-fmcomms4-ebz/hardware">https://wiki.analog.com/resources/eval/user-guides/ad-fmcomms4-ebz/hardware</a></div><div><br></div><div>Schematic of the connector here:</div><div><br></div><div><a href="https://wiki.analog.com/_media/resources/eval/user-guides/ad-fmcomms1-ebz/fmcomms1_revc_sch.pdf#page=12">https://wiki.analog.com/_media/resources/eval/user-guides/ad-fmcomms1-ebz/fmcomms1_revc_sch.pdf#page=12</a></div><div><br></div><div>Layout of differential pairs needs to ensure that the lines are equal length. <br><br>Initial discussions with 96Boards indicated no one else is working on this and that the effort would be welcome and appreciated. <br><br>We have a volunteer with time to take a crack at the layout next week. <br></div></div></div></div></div></div></div>
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