The 21041 has a single 50-pin connection, which consists of the control and address/data signals of a PCI bus. The 21041 provides complete implementation of the IEEE 802.3 Ethernet specification from the attachment unit interface (AUI) and the twisted-pair (10BASE-T) interface through the media access control (MAC) layer, and creates a direct interface to the PCI bus. The PCI interface operates on the bus and uses approximately 1% of the bus bandwidth during an Ethernet reception or transmission. The bus master design provides for high throughput between the system and the network, yet it requires only a minimum of components for a complete implementation.
Model, P/N | Item | Mean price ~ |
---|---|---|
21-40756-01 | DECchip 21041 PCI Ethernet LAN Controller | 60 $ |
21-45711-05 | DC1089EC | 15 $ |
FPJ11-AA, 21-21858-06 | 18 MHz Floating Point | 100 $ |