| houkime | what's with p2401? | 18:06 |
|---|---|---|
| houkime | it needs to go to bb-xm s-video but it doesn't seem like it has any direct b2b for that | 18:07 |
| houkime | so it will be sth like hacky connection where you have a normal cable on vbbx-m side and 2 pins on neo900 side? | 18:09 |
| houkime | *bb-xm | 18:10 |
| Joerg-Neo900 | http://neo900.org/stuff/papers/v2.pdf#14 "4.11 TV output" | 20:21 |
| Joerg-Neo900 | yes | 20:22 |
| Joerg-Neo900 | houkime: ^^^ | 20:23 |
| Joerg-Neo900 | was this a comprehensive answer to your question? | 20:24 |
| houkime | ok | 20:31 |
| houkime | p2501 - pin1 in the wrong place. Looks like fp needs to be mirrored. | 20:57 |
| houkime | it is facing downwards correctly, but in order to connect pin1 to pin1 on bb-xm in needs to be mirrired | 20:58 |
| houkime | however it is quite hard totell whether it was already countered on the pin assignment level or not | 21:15 |
| houkime | *to tell | 21:15 |
| houkime | rechecked using bbxm System reference manual. | 22:01 |
| houkime | yep, pin1 as it is assigned right now should go to pin1 | 22:02 |
| houkime | of bbxm | 22:02 |
| houkime | so connector should be mirrored for this to happen | 22:02 |
| houkime | or has its pins reassigned | 22:02 |
| houkime | what is better? | 22:03 |
| houkime | *should have pins reassigned | 22:03 |
| houkime | reassigning signals is a sch tweaking and renumbering pins is a fp tweaking (which breaks standard numbering scheme btw) | 22:06 |
| Joerg-Neo900 | please no renumbering of pins. pin1 of a connector is same on both side F and M connector half | 22:23 |
| Joerg-Neo900 | however we'll follow manuf's numbering even if it breaks the "pin1 == pin1" pragma | 22:24 |
| Joerg-Neo900 | if a female connector pin1 goes to anything that's not pin1 on the male connector counterpart, it needs a varbatim note on that nasty fact in schematics | 22:26 |
| Joerg-Neo900 | also possible (made up example): "UPPER_J42-F:pin1 (== Murata_X666-20B2B-Male:pin1) == BB-xM_J17:pin28" (BB_xM not using the Murata component pin numbers and instead inventing their own numbering) | 22:30 |
| houkime | shouldn't default header numbering mirror that of a female? | 22:46 |
| houkime | the manuf doesn't really say anything about this in the datacheet | 22:48 |
| houkime | *datasheet | 22:49 |
| houkime | it's not a chiral mezzanine, just a 2-row stacker | 22:51 |
| houkime | i'm just thinking now where this numbering even came from initially | 22:51 |
| houkime | looks like one just took a female socket of bb-xm and used it as a header. | 22:52 |
| houkime | hmm... this numbering is from a default-ish "header' fp library. hmm... | 23:13 |
| houkime | ok. rechecking internets. | 23:19 |
| houkime | yes, females and male should be mirrored. | 23:20 |
| houkime | and the header pin numbers are correct | 23:21 |
| houkime | so logically this means that bb-xm indeed uses non-standard pin numbering | 23:21 |
| houkime | need to notice though that camera connector is meant to be connected by right-angle connectors so that camera sticks | 23:30 |
| houkime | thereby a conclusion: signals should be reassigned and note should be left in the sch about this. | 23:43 |
| houkime | this also means that other bb-xm connections also need careful rechecking | 23:44 |
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