cole8888
Broadcom BCM5904 10/100 transceiver
This was pulled from a 3com fast Ethernet card which was being discarded as e-waste by my university last year.
On the right, midway down the chip the broadcom logo is inscribed as well as "TORNADO", "BCM5904", "REV A0444" and "1998". There are several other letters and symbols around the die, but I cannot determine their significance if any.
The only documentation I could find about this exact chip was this: www.sec.gov/Archives/edgar/data/1054374/0000892569-99-000...
If you search "BCM5904" in that document it describes it as:
"Single chip 10/100Base-T transceiver with integrated MAC ASIC."
This is a composite of 42 images taken by a pixel 2XL from a microscope at 40X. The images had 65% overlap and were stitched together in AutopanoGiga.
Broadcom BCM5904 10/100 transceiver
This was pulled from a 3com fast Ethernet card which was being discarded as e-waste by my university last year.
On the right, midway down the chip the broadcom logo is inscribed as well as "TORNADO", "BCM5904", "REV A0444" and "1998". There are several other letters and symbols around the die, but I cannot determine their significance if any.
The only documentation I could find about this exact chip was this: www.sec.gov/Archives/edgar/data/1054374/0000892569-99-000...
If you search "BCM5904" in that document it describes it as:
"Single chip 10/100Base-T transceiver with integrated MAC ASIC."
This is a composite of 42 images taken by a pixel 2XL from a microscope at 40X. The images had 65% overlap and were stitched together in AutopanoGiga.