21140 Fast Ethernet LAN Controller for PCI The world's highest performance Fast Ethernet controller Digital's DECchip 21140 is a high performance bus master Fast Ethernet controller that provides a robust, highly integrated and cost-effective solution optimized for 100BaseT network connections to PCI systems. The DECchip 21140 is a direct follow-on to the 21040 PCI Ethernet controller and runs with the same drivers, providing a very simple upgrade path from 10 Mbps to 100 Mbps networks. In the quest for higher network bandwidth, 100BaseT Fast Ethernet provides a very attractive upgrade path to conventional Ethernet. The DECchip 21140 provides an excellent core logic for best-in-class Fast Ethernet NICs. Its high level of integration provides for a very straightforward adapter design. The DECchip 21140 is also well suited for internetworking applications such as Ethernet switches, bridges, and routers which require a connection to Fast Ethernet. The simple migration path to 100 Mbps networking. The microarchitecture of the chip supports full duplex Fast Ethernet operation. The DECchip 21140 comes with large on-chip FIFOs and does not require any external buffering. The powerful onboard DMA is optimized for efficient use of the CPU. The DECchip 21140 has separate 10 Mbps and 100 Mbps ports. The 100 Mbps port contains the complete MII interface to support voice-grade, data-grade, STP, and fiber cabling. Also included on-chip are the scrambler and Physical Coding Sublayer (PCS) to reduce the cost of 100BaseTX Solutions. Digital provides a comprehensive set of software drivers with the DECchip 21140 controller for a wide range of network operating system environments. These drivers in conjunction with the DECchip 21140 design, allow adapter card manufacturers to build a single product that will "plug and play" in computers representing diverse operating systems and hardware platforms. Highlights ¥ Highest performance Fast Ethernet controller providing increased throughput and efficient use of CPU ¥ Supports two network ports: 10 Mbps and 100 Mbps ¥ On-chip scrambler and Physical Coding Sublayer (PCS) to significantly reduce cost of 100BaseTX solutions. ¥ On-chip large FIFOs, no additional on-board memory is required ¥ Supports full duplex operation ¥ DECchip 21140 Evaluation Design Kits are available Evaluation kit ensures ease of design The DECchip 21140 Evaluation Design Kit provides all the tools needed by hardware engineers who design with the chip to bring products to market quickly. The kit contains a PCI evaluation board with 10BaseT and 100BaseT connections, schematics and Gerber files, evaluation drivers, and a complete set of documentation. Specifications Power Supply VDD = 3.3V +-5% Operating Temperature Range Ta = 0 - 70C Storage Temperature Range -55C min. +125C max Power Dissipation @VDD (max) = 3.3V, TBD Package 144-pin PQFP For more information To learn more about the availability of the DECchip 21140 Fast Ethernet controller, contact your local Digital sales representative, or your local semiconductor distributor. To learn more about Digital's semiconductors, contact the Semiconductor Information Line: 1-800-332-2717. Outside North America, call: 508-568-6868. Digital believes the information in this publication is accurate as of its publication date; such information is subject to change without notice. Digital is not responsible for any inadvertent errors. Digital will conduct its business in a manner that conserves energy. The following are trademarks of Digital Equipment Corporation: DEC, Digital, the DIGITAL logo.