Ideally
suited for high port density Gigabit Ethernet switches and routers, or multi-port
Network Interface Cards (NICs), Vitesse’s VSC8224 and VSC8244 integrates
four low-power, triple speed (10BASE-T, 100BASE-TX and 1000BASE-T) Ethernet transceivers
with four 1000BASE-X compatible serializer / deserializer (SerDes) in a 19mm,
thermally enhanced, 260-pin plastic Ball Grid Array (BGA). Supporting dual media
applications, the quad 1000BASE-X compatible SerDes devices allow for direct connection
to Gigabit Ethernet fiber optic, SFP, and GBIC modules with automatic selection
between copper and fiber media.
The
VSC8224 and VSC8244 physical layer “PHY” IC leverages Vitesse’s
proprietary fourth generation DSP Technology. Vitesse’s highly optimized
DSP architecture yields industry-leading performance at less than 640mW per port,
supporting 1000BASE-T with respect to all worst case impairments (NEXT, FEXT,
Echo and system noise sources).
 Each
of the four independent triple-speed transceivers features a pin-efficient RGMII
and RTBI-compliant MAC interface with automatic or user-programmable RGMII timing
compensation. On-chip RGMII/RTBI series termination resistors simplify board design
challenges by improving signal integrity and completely eliminating dozens of
external series termination resistors on the receive side of the MAC interface.
In addition the VSC8224 and VSC8244 integrates, for the first time in the industry,
all copper media side line termination resistors. The integrated SerDes allows
for connection to Gigabit Ethernet fiber modules, SFP and GBIC ports with automatic
media selection.
To
enable maximum network management feedback to the host system and the user, the
VeriPHY® Link Management and Cable Diagnostics Suite can be used with the
device. VeriPHY provides extensive network and cable plant operating and status
information, such as the cable length, termination status, and open/short fault
location. The VeriPHY Suite can be integrated with switch or NIC software to greatly
simplify Gigabit Ethernet network deployment and management to provide sophisticated,
real-time cable diagnostics, offering similar functionality to a hand-held cable
tester. |
