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AMCC'S Gigabit Ethernet Chipset Selected by 3Com for Use in SuperStack II Hub
1000 SX
Industry-Leading Transceivers Enable High-Speed Serial Data Transmission in Full-
Duplex
SAN DIEGO--June 29, 1998-- Applied Micro Circuits Corp. (AMCC) (NASDAQ: AMCC),
a leader in high-bandwidth silicon connectivity solutions, today announced that 3Com
Corp. has selected AMCC's S2046 and S2047 Gigabit Ethernet transmitter and receiver
pair for use in the company's new SuperStackr II Hub 1000 SX, an 8-port repeater.
Using AMCC's S2046/S2047 chipset, the SuperStack II Hub 1000 SX is capable of
simultaneously sending and receiving information at rates of 1000 Mbps, as well as
forwarding all incoming packets to all ports on the hub in full compliance with the
proposed IEEE 802.3z specification.
AMCC's IEEE 802.3z-compliant Gigabit Ethernet transmitter and receiver pair was
selected for use in the 3Com application based on its superior combination of price, jitter
performance, and power consumption. With 1250 Mbps operation over fiber optic or
coaxial cable interfaces, the S2046 and S2047 easily meets the high-speed data
communications requirements of the SuperStack II Hub 1000 SX, while offering its
designers a compact 52 PQFP package to work with.
The S2046/47 chipset's low-power design paved the way for 3Com's development of a
power-conscious product. Further, the chipset's low jitter output enabled the company's
design engineers to more easily meet overall system jitter requirements.
"The SuperStack II Hub 1000 SX delivers a low cost solution to IS Managers seeking to
increase signal transmission by combining the cost advantages of a hub with the full-
duplex capability of a switch," said Sung-Min Tao, Senior Product Manager, Advanced
Products Division for 3Com Corp. "We selected AMCC's chipsets because their superior
jitter characteristics, excellent performance and low cost fit well within our pricing and
product design goals for the new SuperStack II Hub 1000 SX."
"This latest integration speaks of the quality, performance, and cost benefits 3Com has
reaped from past integration with AMCC's components," said Jack Basi, AMCC's director
of marketing for datacom and computer products. "We look forward to leveraging the
functionality of our devices in future 3Com quality networking solutions, while
strengthening our relationship with the company."
The SuperStack II Hub 1000 SX is guaranteed to be fully compliant with the final IEEE
802.3z specification, providing a ready path to future Gigabit Ethernet migrations. The
new repeater also offers packet flow control to ensure that transmitted data remains
intact from origin to destination, ultimately reducing packet loss and eliminating the need
for packet re-transmission. The SuperStack II Hub 1000 SX is designed to meet multiple
networking requirements including use as a server aggregator, switch aggregator,
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AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
