Comments on: DiJi hacking http://wtfmoogle.com OMG WTF BBQ Thu, 12 Aug 2010 16:17:50 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Nrrdzilla http://wtfmoogle.com/?page_id=741&cpage=1#comment-82 Nrrdzilla Mon, 19 Apr 2010 23:31:09 +0000 http://wtfmoogle.com/?page_id=741#comment-82 > The change was to try and keep the sd data lines the same > length while reducing the noise the sharp edges can cause. Whoa - what kind of clock rates are you pushing? I haven't been able to find a freely available doc on clock speeds, edge speeds and skew, just the "simplified" one. Do you have such a beast, or a link to it? All I can find so far is that the DiDj can support 4MB/s -class cards. I wonder if, inside the DiDj, the length mismatches are almost at the edge of the spec if you're seeing problems in your old layout. All the adjacent connection endpoints aren't exactly far apart =/ -Something to think about anyway. Heh - and _now_ I have to go and look at how to do curved traces in Eagle - a feature I never knew they supported :P TIA, N > The change was to try and keep the sd data lines the same
> length while reducing the noise the sharp edges can cause.

Whoa – what kind of clock rates are you pushing? I haven’t been able to find a freely available doc on clock speeds, edge speeds and skew, just the “simplified” one. Do you have such a beast, or a link to it? All I can find so far is that the DiDj can support 4MB/s -class cards.

I wonder if, inside the DiDj, the length mismatches are almost at the edge of the spec if you’re seeing problems in your old layout. All the adjacent connection endpoints aren’t exactly far apart =/
-Something to think about anyway.

Heh – and _now_ I have to go and look at how to do curved traces in Eagle – a feature I never knew they supported :P

TIA,
N

]]> By: Moogle http://wtfmoogle.com/?page_id=741&cpage=1#comment-81 Moogle Mon, 19 Apr 2010 19:14:20 +0000 http://wtfmoogle.com/?page_id=741#comment-81 The change was to try and keep the sd data lines the same length while reducing the noise the sharp edges can cause. The change was to try and keep the sd data lines the same length while reducing the noise the sharp edges can cause.

]]> By: Nrrdzilla http://wtfmoogle.com/?page_id=741&cpage=1#comment-80 Nrrdzilla Mon, 19 Apr 2010 18:57:36 +0000 http://wtfmoogle.com/?page_id=741#comment-80 Hey. Just a quick question regarding mods between DJHI V2.8 and the V2.2 layout. Why the change from 45 degree traces to curved traces? Seems like it would have made it a bigger PITA to do the layout. (?) Cheers, N Hey.

Just a quick question regarding mods between DJHI V2.8 and the V2.2 layout. Why the change from 45 degree traces to curved traces? Seems like it would have made it a bigger PITA to do the layout. (?)

Cheers,
N

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