User’s guide
1-3
Adaptive interrupt frequency
The adapter device driver automatically adjusts host interrupt frequency based on traffic
conditions to increase overall application throughput. In light traffic, the adapter device
driver interrupts the host for each received packet, minimizing latency. When traffic is
heavy, the adapter issues one host interrupt for multiple, back-to-back incoming packets,
preserving host CPU cycles.
Dual DMA channels
The PCI interface on the Netfinity Gigabit Ethernet Adapter contains two independent
direct memory access (DMA) channels for simultaneous read and write operations.
32-bit or 64-bit PCI bus master
Compliant with PCI Local Bus Rev 2.2, the PCI interface on the Netfinity Gigabit
Ethernet Adapter is compatible with both 32-bit and 64-bit PCI buses. As a bus master, the
adapter requests access to the PCI bus instead of waiting to be polled.
ASIC with embedded RISC processor
The core control for the Netfinity Gigabit Ethernet Adapter resides in a tightly integrated,
high-performance ASIC. The ASIC includes dual RISC processors. This provides the
flexibility to add new features to the adapter and upgrade it to future network requirements
through software download. This also enables the adapter device drivers to use the built-in
host off-load functions on the adapter as host operating systems are enhanced to take
advantage of these functions.
Connectors
The faceplate on the Netfinity Gigabit Apater provides an RJ-45 connector for connecting
the adapter to another network device.
LEDs
The faceplate of the Netfinity Gigabit Ethernet Adapter has four LEDs: one for each port
speed option (10Mbps, 100Mbps, and 1Gbps), to indicate which link is active, and one
LED for data transfer status. Until the driver software is properly installed, all four LEDs
remain lit when the server is turned on.
When the adapter hardware and device driver software have been properly installed on
your computer, the LEDs indicate the adapter states, according to the following table.
LED
State
Description
Data
Blinking
Brief bursts of data are detected on the port.
Data
On
Streams of data are detected on the port.
Data
Off
No data is detected on the port.
1000
On
Good 1000 Mbps (Gigabit) Ethernet link.
Summary of Contents for Netfinity
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