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| Bertl | felix_: do you have a link for a BOM for me to order parts? | 13:04 |
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| felix_ | haven't exported the BOM yet; can do that later | 15:24 |
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| Kjetil | (My two cents: It's always a good idea to check that the parts specified in the BOM are orderable before making the PCB) | 15:57 |
| felix_ | http://sigsegv.notmysegfault.de/intern/AXIOM-photonSDI-hw-BOM.csv | 16:01 |
| felix_ | last time i checked everything was in stock. but that could have changed... | 16:01 |
| felix_ | oh and while creating the bOM, i found another small bug; 0402 resstor footprint for a 0402 capacitor. shouldn't be a real problem though | 16:02 |
| Kjetil | oh no! | 16:07 |
| Bertl | I knew it, won't work at all ... | 16:19 |
| Kjetil | unless we can get our hands on those expensive resistive capacitors | 16:26 |
| Bertl | The PCIe edge connectors are not available either ... | 16:33 |
| Kjetil | awh man | 16:34 |
| Bertl | felix_: regarding BOM, it would be good to have a little more information about the capacitors (like voltage/dielectric) | 16:35 |
| Bertl | if not specified, I'll go for X5R at 6.3V or higher | 16:36 |
| Bertl | what speedgrade is required for the artix? | 16:45 |
| Bertl | is there a special reason for the cypress flash memory? would e.g. the Winbond W25Q128 work as well? | 16:50 |
| Bertl | the Si5342 comes as A/B/C and D, which one do you want? | 16:54 |
| Bertl | (I'd presume A, but not sure) | 16:55 |
| Bertl | the DSC6001CI1A-025.0000 doesn't seem to be available anywhere ... i.e. probably needs to be ordered from microchip direct | 16:58 |
| Kjetil | I guess both A and B should work. | 17:14 |
| Bertl | felix_: the 0402 ferrite beads need some specification as well | 17:16 |
| felix_ | uh, oh; should have written that down whe i designed the board... | 17:48 |
| felix_ | the edge connectors don't need to be ordered ;) | 17:49 |
| Bertl | what a relief :) | 17:49 |
| felix_ | the si5342 was either the a or the b variant. have to have a closer look | 17:51 |
| felix_ | i'll have a look later (maybe today, maybe tomorrow; i'm currently at a friend's house, who i haven't seen in a while) | 17:52 |
| Bertl | no problem | 17:52 |
| felix_ | on the flash: it mostly depends on if the flash chip uses the commands the fpga uses (maybe that's some option in the beginning of the bitstream). the flash i used in teh design was the one from the trenz board; i can have a look thouh if the winbond one will also work | 17:55 |
| Bertl | please do so, tx | 17:55 |
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| felix_ | on the fpga side the speed grade 2 is needed for 6g sdi | 20:33 |
| felix_ | fyi: i deleted the v1.0 version tag and will add a new v1.0 tag when the board will finally go into production. i am aware that this is rather bad practice, but there are no forks yet and *insert short rant about very late reviews here* ;P | 20:38 |
| felix_ | it seems that the Si5345B will be sufficient (difference to the A variant is the different maximum output clock frequency) | 20:43 |
| felix_ | the B variant supports up to 350 mhz while the A variant supports up to a bit over 1ghz | 20:44 |
| felix_ | all 6g/12g sdi reference designs i've seen use 148.5mhz as reference clock | 20:45 |
| felix_ | (and the double frequency likely won't work with the artix7) | 20:46 |
| felix_ | digikey has both in stock, so i'll put the B variant in the design. B is a bit cheaper than A | 20:48 |
| felix_ | s/Si5345B/Si5342B/ | 20:49 |
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| felix_ | hmm, i have to look into the crystal oscillator thing. i put that and the flash chip on my todo list for tomorrow | 20:54 |
| felix_ | back in the time of ise, some winbond chips were supported; in the manual for vivado only chips from micron, spansion and macronix are listed | 22:11 |
| felix_ | https://www.xilinx.com/support/documentation/sw_manuals/xilinx14_7/isehelp_start.htm#pim_c_introduction_indirect_programming.htm vs. https://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_2/ug908-vivado-programming-debugging.pdf from page 330 on | 22:11 |
| tpb | Title: ISE Help (at www.xilinx.com) | 22:11 |
| felix_ | good night | 22:13 |
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