On 2/22/07, Attila Kinali <[EMAIL PROTECTED]> wrote:
Moin,
On Thu, 22 Feb 2007 14:25:21 -0500
"Timothy Normand Miller" <[EMAIL PROTECTED]> wrote:
> Howard has made another step forward. Everything's tested except for
> analog video and TV.
May i open a bottle ? :-)
I'm waiting until analog video is tested. :)
> Howard believes he's identified all of the bugs
> in OGD1 except for anything possibly in the those two portions. Our
> PCB guy is working on the changes.
While he is at it, could he do me a favor and route the wires
to the header pins as impedance controled lines with the pins
that are near each other being a differential pair... if they
aren't already and if there is enough space. I have some ideas
that i'd like to test with OGD1 and therefore i need a more or
less reliable way to transmit a few 100MHz signals.
I would suggest soldering to the pads for the 500MHz DACs. You should
be able to find headers that have the same pin-spacing as the chips we
could otherwise hypothetically place there. I don't recall how many
are shared with the TV chip, but I think it's not all of them.
They're also connected to I/O drivers that are designed to do
differential signaling, IIRC.
> As soon as analog video is tested,
> we're going to start taking orders. We'll hand over the designs to
> the fab house immediately, but we don't want to start production until
> the first 100 boards have been ordered. In that lag period, we'll
> probably check out the TV section.
I'll order two! :-)
Excellent! :)
Speaking of that, should we put a general limit on the number of
developer-price boards we would want to sell to any one developer?
Actually, we should, but how many?
--
Timothy Normand Miller
http://www.cse.ohio-state.edu/~millerti
Favorite book: The Design of Everyday Things, Donald A. Norman, ISBN
0-465-06710-7
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