[geeks] Sun ethernet and crystal

[Robert Toegel]

Well, I'll take a stab at it.  Yes, it is a crystal or crystal oscillator
more likely.  Look at the pins.  Does one seem to be connected to or part
of the case?  That would be your ground.  If the CB has a lot of "copper"
around one of the connections, that is probably the ground on the CB.  Four
pins would probably be at least one ground, case (which could be connected
to the ground) positive and output.  Hope this helps.

On Mon, Jan 6, 2025, 02:57 Mouse via geeks <geeks at sunhelp.org> wrote:

> I have a Sun-branded PCI Ethernet which has a sticker saying, among
> other things, P/N: 5132E-ST.  (Another sticker says "PCI 10/100".)
>
> The reason I'm writing is that, when I extracted it from the antistatic
> bag I had it stored in, a stray part also fell out.  On inspection, it
> appears it was somehow knocked free from this card.  It looks to me
> like a crystal.
>
> It looks like a 4-pin DIP package, about the size you'd get by taking a
> normal 14-pin through-hole DIP and cutting off four pins on one end,
> then removing all pins except what would on that hypothetical 14-pin
> package be pins 2, 4, 11, and 13 (assuming the part you cut off carries
> pins 6, 7, 8, and 9).  All four pins are folded under the package to
> make it surface-mount.
>
> The card has an outline labeled Y2 in one corner; it has pads which
> match the chip both in that the chip's pin positions match the pads and
> in that the pads have solder which appears to have had its part
> forcibly removed - and the chip pins match the hollows in the solder
> very well.
>
> Trouble is, the pinout has 180-degree rotational symmetry, which makes
> it difficult to know which way around to solder it back.  The pins fit
> the hollows in the solder slightly better one way than the other, but
> not well enough to convince me that way is right.
>
> I'm wondering if anyone has such a card and can tell me which way
> around crystal Y2 goes.  Alternatively, if people can tell me enough
> about the card and the crystal for me to figure out which way is right.
>
> The package is marked
>
>         SG-615PTJC
>           50.0000M
>         E    8372B
>
> Searching for the first line, I found an image on mercadolivre.com.br
> for a part which looks very similar except for the frequency (32.0000M)
> and datecode (9422).  But I haven't found anything there which looks to
> my non-Portugese-reading eyes like a datasheet link or manufacturer
> name.
>
> I'm not sure how to further identify the card.  If someone wants, I
> could snap pictures and make them available.
>
> Any thoughts?
>
> /~\ The ASCII                             Mouse
> \ / Ribbon Campaign
>  X  Against HTML                mouse at rodents-montreal.org
> / \ Email!           7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B
>
> _______________________________________________
> GEEKS:  http://sunhelp.org/mailman/listinfo/geeks_sunhelp.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sunhelp.org/pipermail/geeks_sunhelp.org/attachments/20250106/3bc9427d/attachment.html>