<Oksana>
houkime: 0.40mm Pitch Board-to-Board SlimStack Receptacle, Surface Mount, Dual Row, Vertical, 0.95mm Mated Height, without Friction Lock, 64 Circuits ? There is https://www.molex.com/molex/products/datasheet.jsp?part=active/5024266412_PCB_RECEPTACLES.xml
<Oksana>
New part is 0.40mm Pitch SlimStack Board-to-Board Receptacle, Surface Mount, Dual Row, Vertical, 1.00mm Stacking Height, with Solder Tabs, 64 Circuits
<Oksana>
So, the difference is: 1) 0.05mm taller? 2) somewhat different locking mechanism? 3) slightly more durable - 30 mating cycles max vs 10 cycles old; 4) 3 times more current could go through; 5) what else?
<Oksana>
Problem is, worrying about this connector means also having to manufacture flex cables anew.
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<houkime>
Oksana, well, you can compare the "drawings" (linked from a datasheet) for original connector ond the new you proposed and see that old is 5 mm wide while new is 2.6 mm wide
<houkime>
This is why i said that hirose series might be more compatible.
<houkime>
If there is no compatible receptacle for a display header then it means that likely replacing the whole display will be cheaper than making a custom flexpcb adapter.
<houkime>
i don't know much about how market from obsolete parts works though.
<houkime>
One more scenario is to desolder a connector from N900 board and transplant it to the new one.
<houkime>
but obviously not much room for error with this one.
<houkime>
Joerg-Neo900, any thoughts?
<houkime>
Also, about transplantation, is the N900 connector actually identical to molex in the neo900 schematics or it can have a bit different footprint?
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<DocScrutinizer05>
we got more displAY CONNE
<DocScrutinizer05>
we got more display connectors than display "mech parts", so a non-issue
<DocScrutinizer05>
we did quite some artistics to find and finally source those display connector parts
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<houkime>
ok, great
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<houkime>
Can't find a datasheet on ACX565AKM LCD
<houkime>
Anyone knows where to fetch one? Sony seems like a very strange company which doesn't distribute documentation on its own parts.
<houkime>
( ACX565AKM is an LCD used on N900)
<houkime>
the pin names on the display connector are based on _something_, right? Some document?
<houkime>
For example, here is the question: what is the speed of display SPI bus?
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<houkime>
I would expect sth of the order of 100 Mhz but i really don't know.
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<houkime>
CSI seems quite challenging. I assume that it is D-PHY thing, with one DP for forward stream , one DP for reverse stream, and one more DP for clock.
<houkime>
And the speed on this this is around 1 Gbit/s
<houkime>
And two streams and clock need to be completely independent from each other.
<houkime>
and _yet_ be synchronized, all 3 of them.
<houkime>
So you probably can't really just lay them out as a 6-wire band.
<houkime>
because they will crosstalk
<houkime>
umm, maximum skew between clock and each of the DPs is 1.5mm
<houkime>
kinda tense
<houkime>
It is a bit strange that schematics refers to CSI as DSI, CSI while feasibility study says that n900 uses SPI for display. So it is actually a CSI for a front camera.
<houkime>
*as DSI/CSI
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<houkime>
might be a good call to make some simple tests with bb-xm <-> ACX565AKM first
<houkime>
moreover, on the v2 board these 3 DPs should actually go the other direction from where they need to go in the final design
<houkime>
which actually means somehow you need to turn all 3 of them 180 degrees without violating maximum skew of 1.5 mm
<houkime>
between clock and each DP
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