Cardbus Support; Bus-Mastering Capability; Frame Priority Tagging For Virtual Lans - NETGEAR GA511 User Manual

10/100/1000 mbps cardbus adapter

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User Manual for the NETGEAR 10/100/1000 Mbps CardBus Adapter GA511

CardBus Support

CardBus is a 32-bit bus-mastering architecture that operates at PCI local-bus speeds of up to 33

MHz, yielding a peak bandwidth of 132 MB/sec. Unlike 16-bit PC Cards, which operate at slower

ISA bus speeds of 8 MHz using an ISA-like asynchronous protocol, CardBus provides a fast 32-bit

multiplexed address/data path that allows full access to gigabit Ethernet's bandwidth.

By utilizing internal bus speeds, CardBus can operate at speeds six times faster than a 16-bit PC

Card and five times faster than a 100 Mbps PC Card. In addition, CardBus PC cards operate at 3.3

Volts, saving power and conserving your PC's battery life.

Model GA511 features leading-edge bus-mastering capabilities to optimize throughput while

maintaining low CPU utilization. Bus mastering allows the GA511 to assume control of your PC's

system bus, accelerating data transfers. 16-bit PC Cards, by comparison, act as a bus slave and

pass data through the CPU before sending it to the host system. This slows data transfers and strain

your PC's processor.

The GA511 is 802.1Q/1p-compliant for frame priority tagging. The IEEE 802.1Q standard defines

the operation of Virtual LAN (VLAN) bridges that permit the definition, operation and

administration of VLAN topologies within a bridged LAN infrastructure. Using the GA511 with

802.1p-compliant switches or routers offers a range of traffic prioritization of Layer 2 frames,

providing a higher quality of service on high-speed local area networks.

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Introduction

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