FW82801DBM S L6DN Intel, FW82801DBM S L6DN Datasheet - Page 78

• Manufacturer Part Number: FW82801DBM S L6DN
• Manufacturer: Intel

Specifications of FW82801DBM S L6DN

• Lead Free Status / RoHS Status: Not Compliant

Functional Description
5.2
5.2.1
78
LAN Controller (B1:D8:F0)
The ICH4’s integrated LAN Controller includes a 32-bit PCI controller that provides enhanced
scatter-gather bus mastering capabilities and enables the LAN Controller to perform high-speed
data transfers over the PCI bus. Its bus master capabilities enable the component to process high
level commands and perform multiple operations, which lowers processor utilization by off-
loading communication tasks from the processor. Two large transmit and receive FIFOs of 3 KB
each help prevent data underruns and overruns while waiting for bus accesses. This enables the
integrated LAN Controller to transmit data with minimum interframe spacing (IFS).
The ICH4 integrated LAN Controller can operate in either full-duplex or half-duplex mode. In full-
duplex mode the LAN Controller adheres with the IEEE 802.3x Flow Control specification. Half
duplex performance is enhanced by a proprietary collision reduction mechanism.
The integrated LAN Controller also includes an interface to a serial (4-pin) EEPROM. The
EEPROM provides power-on initialization for hardware and software configuration parameters.
From a software perspective, the integrated LAN Controller appears to reside on the secondary side
of the ICH4’s virtual PCI-to-PCI Bridge (see
assigned a different number, depending on system configuration.
The following summarizes the ICH4 LAN Controller features:
LAN Controller Architectural Overview
Figure 5-4
four main subsystems: a Parallel subsystem, a FIFO subsystem and the Carrier-Sense Multiple
Access with Collision Detect (CSMA/CD) unit.
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Compliance with Advanced Configuration and Power Interface and PCI Power Management
standards
Support for wake-up on interesting packets and link status change
Support for remote power-up using Wake on LAN* (WOL) technology
Deep power-down mode support
Support of Wired for Management (WfM) Rev 2.0
Backward compatible software with 82557, 82558, and 82559
TCP/UDP checksum off load capabilities
Support for Intel’s Adaptive Technology
is a high level block diagram of the ICH4 integrated LAN Controller. It is divided into
Section
5.1.2). This is typically Bus 1, but may be
Intel
®
82801DBM ICH4-M Datasheet