AMD LANCE Am7990

[1][2] LANCE, short for "local area network controller for Ethernet", is also the brand name for follow-up versions of the chip.

This means you should be able use the original 16-bit software on these members of the PCnet family of single-chip Ethernet controllers.

The Am7990 can handle 10 megabit/s Ethernet with back-to-back packet reception with as little as 0.5 μs interframe spacing.

The Am7990 handles a decoded and clock-recovered Ethernet bitstream complete with a collision-detection flag.

These functions are typically handled by the companion Am7992 "Serial Interface Adapter" chip manufactured in a bipolar process.

[3] The Amiga SANA-II network interface API has poor multicast support, and this chip bug might be the reason.

AMD Am7990 Lance die
Typical application with Am7990 MAC on the left next to Am7992 Manchester encoder/decoder (Serial Interface Adapter) and AUI isolation transformer in the bottom right.
AMD Am7990DC from SGI IP6 motherboard