Product Description

1.12 LAN Subsystem

The LAN subsystem includes the Marvell Yukon 88E50 Gigabit (10/100/1000 Mbits/sec) Ethernet Controller and an RJ-45 LAN connector with integrated status LEDs.

1.12.1Marvell Yukon 88E8050 PCI Express 1.0a Integrated MAC/PHY

Gigabit Ethernet Controller

The Marvell Yukon 88E8050 provides the following functions:

x1 PCI Express link

Basic 10/100/1000 Ethernet LAN connectivity

IEEE 802.1p and 802.1q support

10/100/1000 IEEE 802.3 compliant

Compliant to 802.3x flow control support

Jumbo frame support

TCP, IP, UDP checksum offload

Automatic MDI/MDIX crossover

Full device driver compatibility

Configuration EEPROMs that contain the MAC address and ASF 2.0 support

Wake On LAN technology power management support

PCI Express Active State Power Management Support (L0s)

ASF 2.0 support

1.12.2RJ-45 LAN Connector with Integrated LEDs

Two LEDs are built into the RJ-45 LAN connector (as shown in Figure 14). Table 7 describes the LED states when the board is powered up and the Gigabit LAN subsystem is operating.

Green LED Green/Yellow LED

OM16513

Figure 14. LAN Connector LED Locations

Table 7.

LAN Connector LED States

 

 

 

 

 

LED

Color

LED State

Condition

 

 

 

 

 

 

Off

LAN link is not established.

Left

Green

 

 

On

LAN link is established.

 

 

 

 

 

 

Blinking

LAN activity is occurring.

 

 

 

 

 

 

 

 

 

N/A

Off

10 Mbits/sec data rate is selected.

 

 

 

 

Right

Green

On

100 Mbits/sec data rate is selected.

 

 

 

 

 

Yellow

On

1000 Mbits/sec data rate is selected.

 

 

 

 

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Intel D925XBC, D925XCV LAN Subsystem, 12.2 RJ-45 LAN Connector with Integrated LEDs, Color LED State Condition

D925XBC, D925XCV specifications

The Intel D925XBC and D925XCV are motherboards designed for Intel's LGA 775 socket, targeted primarily at the desktop market during the mid-2000s. These motherboards support Intel's innovative 800 MHz Front Side Bus and provide a robust platform for various computing applications, including gaming and multitasking.

One of the standout features of the D925XBC and D925XCV is their compatibility with Intel's Pentium 4 and Pentium D dual-core processors. These processors deliver impressive performance, especially for users engaging in demanding tasks such as video editing and 3D rendering. The support for dual-channel DDR2 memory allows for increased bandwidth and improved overall system performance, accommodating up to 8 GB of memory in total.

The motherboards are equipped with the Intel 925X chipset, which integrates advanced technologies. This chipset supports Intel's Enhanced Memory 64 Technology (EM64T), allowing for more efficient processing power and better resource management. The presence of the I/O Controller Hub (ICH6) also enhances connectivity options, including SATA 3.0 Gbps interfaces for faster data transfer rates and improved storage capabilities.

Regarding expansion and connectivity, both motherboards feature multiple PCI Express slots along with PCI slots, allowing users to customize their systems according to their needs. This expandability is essential for gamers and professionals looking to add advanced graphics cards and other peripherals. Additionally, these boards come with integrated audio, ensuring satisfactory sound quality without the need for additional sound cards.

The D925XBC and D925XCV motherboards also include integrated Ethernet controllers, supporting fast network connectivity essential for gaming and high-speed internet access. With multiple USB ports available, users can connect a wide variety of devices easily, enhancing the flexibility of their setups.

In terms of form factor, both boards follow the ATX layout, providing compatibility with a broad range of computer cases. This ensures ease of installation and upgrades while promoting good airflow and optimal thermal management for the components installed.

Overall, the Intel D925XBC and D925XCV motherboards integrate essential features and technologies that provide a solid foundation for desktop computing during their time. With strong processing capabilities, expandability, and good connectivity options, these boards were well-received by users looking for reliable performance and versatility in their systems.