Broadcom NetXtreme BCM57 Series, User Manual

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Functionality and Features NetXtreme User Guide
Broadcom
®
April 2017 • 2CS57XX-CDUM514-R Page 14
• Virtual LAN (VLAN) support— IEEE 802.1q VLAN tagging
• TCP, IP, UDP checksum offload
• Large Send Offload (LSO), TCP Segmentation Offload (TSO)
• Hardware assist for IEEE 1588 and IEEE 802.1AS time synchronization implementations
• IEEE 802.3x flow control
• SMBus 2.0 Interface
• Statistics for SNMP MIB II, Ethernet-like MIB and Ethernet MIB (IEEE 802.3z, Clause 30)
• ACPI power management compliance
• Advanced power management by a Central Power Management Unit (CPMU)
• Efficient integrated switching regulator controller
• On-chip temperature monitor
• PCI Express CLKREQ support
• Power Management Offload (PM Offload)
• Serial flash and EEPROM NVRAM support; flash auto-configure
• ECC error detection and correction on internal SRAM
• JTAG boundary scan support
Power Management
Wake on LAN (Magic Packet, Wake Up Frame, specific pattern) is supported.
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.
Dual DMA Channels
The PCIe interface on Broadcom NetXtreme Gigabit Ethernet adapters contains two independent DMA
channels for simultaneous read and write operations.
Note: Adapter speed connection when the system is down waiting for a wake-up signal is either 10
Mbps or 100 Mbps, but can return to 1000 Mbps when the system is up and running if connected to a
1000 Mbps capable switch. Systems intending to use Wake on LAN (WOL) should be connected to a
switch capable of both 1000 and 10/100 Mbps speeds.