Santa Clara, Calif.--Sept. 29, 1997--National Semiconductor Corp. (Santa Clara) announced an advanced single-chip physical layer and transceiver device to support both 10BASE-T, 100BASE-TX, and FX Ethernet protocols. The DP83843 PHYTER device uses a reusable cell methodology which facilitates higher levels of integration and customization.
The PHYTER device is well-suited to a broad range of Fast Ethernet applications, including network adapter cards, PC motherboards, repeaters, and switches. The device features power consumption of 135mA (typical) to 150mA (maximum).
The new scaleable CMOS transceiver architecture has a greater input sensitivity range and improved Bit Error Rate. This enables the PHYTER product to be more tolerant of out of spec cable and support extended cable distances. Additionally, auto-negotiation with Next Page support allows communications of proprietary capabilities from the node to the hub, enabling a customizable system solution.
The PHYTER device includes an IEEE 802.3 ENDEC with built-in AUI/10BASE-T transceivers and filters, as well as a 25 MHz clock and integrated high performance 100 Mbit per second clock recovery circuit, which eliminates the need for a 20 MHz clock source or support for an external 50 MHz oscillator.
This VLSI product is designed for easy implementation of 10/100 Mbit per second Ethernet LANs. It interfaces directly to twisted pair media through an external transformer or to fiber media via industry standard electrical/optical fiber PMD transceivers. This device also interfaces directly to the MAC layer through the IEEE 802.3 standard MII and Serial Management Interface ensuring interoperability between products from different vendors.
The DP83843 PHYTER device is available now. It is offered in an 80-pin plastic quad flat pack and priced at $13 in 1,000-unit quantities.
Santa Clara, CA
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