Qlogic QL45212, User Manual

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1–Product Overview
Features
3 BC0154503-00 C
 Advanced Configuration and Power Interface (ACPI) 1.1a compliant
(multiple power modes)
 Network controller-sideband interface (NC-SI) support
 Advanced network features
 Jumbo frames (up to 9600 bytes). The OS and the link partner must
support jumbo frames.
 Virtual LANs (VLANs)
 Flow control (IEEE Std 802.3x)
 Logical Link Control (IEEE Std 802.2)
 High-speed on-chip reduced instruction set computer (RISC) processor
 Integrated 96 KB frame buffer memory
 1,024 classification filters
 Support for multicast addresses through 128-bit hashing hardware function
 Serial flash NVRAM memory
 PCI Power Management Interface (v1.1)
 64-bit base address register (BAR) support
 EM64T processor support
 Virtualization
Adaptive Interrupt Frequency
The adapter driver intelligently adjusts host interrupt frequency based on traffic
conditions to increase overall application throughput. When traffic is light, the
adapter 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.
ASIC with Embedded RISC Processor
The core control for the QL45212 Adapter resides in a tightly integrated,
high-performance ASIC. The ASIC includes a RISC processor, which provides the
flexibility to add new features to the card and adapts it to future network
requirements through software downloads. The RISC processor also enables the
adapter drivers to exploit the built-in host offload functions on the adapter as host
operating systems are enhanced to take advantage of these functions.