National Semiconductor maakt trots melding van het feit dat het als eerste fabrikant een Ethernet chip op de markt brengt die compatible is met zowel 10, 100 als 1000Mbps Ethernet:
National Semiconductor Corporation (NYSE:NSM - news) today announced the industry's first single-chip 10/100/1000 Mbps Gigabit Ethernet transceiver, the only chip that is backward compatible to existing Ethernet infrastructures.
National's DP83891 Gig PHYTER(TM) combines three speeds of Ethernet operation on a single chip, allowing manufacturers to install it in applications such as switches, workgroups, uplinks, workstations and node cards. Since the triple-speed Gig PHYTER operates over the Category 5 unshielded twisted-pair (UTP) copper wiring that already exists in most office buildings, network administrators are able to upgrade their Ethernet easily and inexpensively.
About Gig PHYTER
The DP83891 is a full-feature physical layer transceiver with integrated PMD sublayers to support 10BASE-TX, 100BASE-TX and 1000BASE-T Ethernet protocols, and is compliant with IEEE 802.3 specifications, including: IEEE 802.3ab, IEEE 802.3u, IEEE 802.3 compliant Auto-Negotiation, IEEE 802.3u MII and IEEE 802.3z GMII.
Gig PHYTER is designed for easy implementation of 10/100/1000 Mbps Ethernet LANs. It uses standard single Quad TX-Transformer interface and performs error-free operations at over 140 meters, 40 meters greater than IEEE specifications. This robust operation ensures successful deployment of the Gigabit technology within an existing 10/100M environment using CAT5 cabling.
Other features of the Gig PHYTER include fully IEEE 802.3u -compliant Auto-negotiation at all three speeds of 10 Mbps, 100 Mbps and 1000 Mbps. In addition, Gig PHYTER possesses an Auto-MDIX that automatically detects and corrects wiring problems such as MDI crossover, swapped pairs and reverse polarity. These features provide intelligence within the chip to correct most common wiring problems.
Gig PHYTER combines National's analog and digital signal processing (DSP) expertise to provide the next technological development in the Ethernet arena. Gig PHYTER uses a variety of on-chip circuits to minimize the total cost of the system while increasing the performance. The on-chip circuitry includes Adaptive Equalization, echo cancellation, cross-talk cancellation, precision Analog to Digital converters, forward error correction and others that allow robust and error-free operation.
Gig PHYTER's digital signal processor (DSP) core is based on National's proven Physical Layer technology used in the Mac PHYTER(TM) and Ds PHYTER(TM) transceivers.
Price and Availability
The DP83891 Gig PHYTER single 10/100/1000 Ethernet transceiver is now available and priced at $95 for volume quantities of 1,000.