J1 and J2 pin number ordering. Zig-zag or counter-clockwise? -

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Last Post 10 Nov 2010 09:07 AM by loginreg@gmail.com

J1 and J2 pin number ordering. Zig-zag or counter-clockwise?

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loginreg@gmail.com

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31 Oct 2010 01:21 AM
Does the pin number ordering of the two 100-pin connectors J1 & J2 follow a zig-zag pattern? The HW docs show that the main functional pin groups are mostly either odd-numbered or even-numbered. And I couldn't find any specific mention of the pin ordering in any of the docs but it would seem to make the most sense if all the even numbered pins are on one side of the connector and all the odd numbered pins are on the other side. Pin-1 is clearly stated, but from there I can't find anything to say either way whether is pin-2 next to pin-1 or on the other side from pin-1? Anyhow, I am stuck with my routing until can I sort this out. Reg

loginreg@gmail.com

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07 Nov 2010 02:37 PM
Bump. Does anyone know? How do you all design your boards without knowing this? Or am I asking this in the wrong place?

richard.laborde@logicpd.com

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Posts:247

08 Nov 2010 07:39 AM
reg, Page 11 of the baseboard layout file clearly marks J1 & J2 pins 1, 2, 99, 100. The layout is evens on one side and odds on the other. Thanks

loginreg@gmail.com

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08 Nov 2010 04:36 PM
Posted By richardl on 8 Nov 2010 7:39 AM reg, Page 11 of the baseboard layout file clearly marks J1 & J2 pins 1, 2, 99, 100. The layout is evens on one side and odds on the other. Thanks Thanks for the answer. But where is the "baseboard layout file"? I couldn't find anything like that on the logicPD website. Did I miss something (again)? PS: Do you know if the TPS65950 START_ADC and INT1 pins are wired to the OMAP? We tried to go through the Linux sources, but they are far far too big and would take too much time find out that way. We are kind of guessing that INT1 is wired to the SYS_NIRQ0 on the OMAP since most other boards do this, but how can we find out of that is the case?

richard.laborde@logicpd.com

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Posts:247

09 Nov 2010 07:37 AM
Have you registered your kit? You get access to all of this documentation after you register. You can create an account and register your kit here: http://www.logicpd.com/product-support Then you can look for the HW spec under Hardware Documents, and the design files are right under that.

loginreg@gmail.com

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09 Nov 2010 06:58 PM
Posted By richardl on 9 Nov 2010 7:37 AM Have you registered your kit? You get access to all of this documentation after you register. You can create an account and register your kit here: http://www.logicpd.com/product-support Then you can look for the HW spec under Hardware Documents, and the design files are right under that. By "kit" do you mean the dev kits or just the SOMs? We're ordering 10 SOMs first. The dev-kit seemed unnecessary, pretty much all of the stuff on it we are not using, we just want to go straight to a prototype. We already have other boards using OMAP so this one is no great problem, we just need a little bit of info and we're good to go.

richard.laborde@logicpd.com

Basic Member
Posts:247

10 Nov 2010 08:57 AM
reg, You can use the SOM to register, you will still have access to the files. Just use the 101xxxx and xxxMyyyyy numbers to register and be sure to pick the proper product from the drop down.

loginreg@gmail.com

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10 Nov 2010 09:07 AM
Posted By richardl on 10 Nov 2010 8:57 AM You can use the SOM to register, you will still have access to the files. Just use the 101xxxx and xxxMyyyyy numbers to register and be sure to pick the proper product from the drop down. Okay, sounds good then. [size=8:14qkln84]Although kind of a shame we can't fully prepare our software and hardware beforehand while waiting for the boards to arrive. We will muddle through somehow I guess.

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