It's a really wacky IC. It's a 68 pin package.
Looks kinda like this
| | | | | | | | | | | | | | | | | | | | | | | |
+-----------------------------------------------+
| +----------+ |
| +-----+ | | |
| | | R | | |
| +-----+ | | |
| +----------+ |
+-----------------------------------------------+
| | | | | | | | | | | | | | | | | | | | | | | |
Both the boxes are ceramic squares (grey ceramic, like an eprom or
something). The little R looks like a surface mount resistor or cap. The
bigger ceramic square has:
SMS300-1
0002624
001 A 7620 on it
The field of the chip is white with grey zebra stripe lines running to
each of the pins. On the top of the IC is screened:
00020730001C
In gold and on the bottom:
SMS INC 2075-0001
In black.
What the heck is this thing?!?!? I know it's probably an engineering
sample, but of what?
Tony