Product Description

Depending on the LAN implementation, the Desktop Boards D925XCV and D925XBC support LAN wake capabilities with ACPI in the following ways:

•The PCI Express WAKE# signal

•The PCI Conventional bus PME# signal for PCI 2.2 compliant LAN designs

•The onboard LAN subsystem

1.14.2.4Instantly Available PC Technology

CAUTION

For Instantly Available PC technology, the +5 V standby line for the power supply must be capable of providing adequate +5 V standby current. Failure to provide adequate standby current when implementing Instantly Available PC technology can damage the power supply.

Instantly Available PC technology enables the Desktop Boards D925XCV and D925XBC to enter the ACPI S3 (Suspend-to-RAM) sleep-state. While in the S3 sleep-state, the computer will appear to be off (the power supply is off, and the front panel LED is amber if dual colored, or off if single colored.) When signaled by a wake-up device or event, the system quickly returns to its last known wake state. Table 10 on page 43 lists the devices and events that can wake the computer from the S3 state.

The Desktop Boards D925XCV and D925XBC support the PCI Bus Power Management Interface Specification. Add-in boards that also support this specification can participate in power management and can be used to wake the computer.

The use of Instantly Available PC technology requires operating system support and PCI 2.2 compliant add-in cards, PCI Express add-in cards, and drivers.

1.14.2.5Resume on Ring

The operation of Resume on Ring can be summarized as follows:

•Resumes operation from ACPI S1 or S3 states

•Detects incoming call similarly for external and internal modems

•Requires modem interrupt be unmasked for correct operation

1.14.2.6Wake from USB

USB bus activity wakes the computer from ACPI S1 or S3 states.

✏NOTE

Wake from USB requires the use of a USB peripheral that supports Wake from USB.

1.14.2.7Wake from PS/2 Devices

PS/2 device activity wakes the computer from an ACPI S1 or S3 state.

1.14.2.8PME# Signal Wake-up Support

When the PME# signal on the PCI Conventional bus is asserted, the computer wakes from an ACPI S1, S3, S4, or S5 state (with Wake on PME enabled in BIOS).

45

Page 44 Page 46
Page 45
Image 45
Intel D925XBC, D925XCV Instantly Available PC Technology, Resume on Ring, Wake from USB, Wake from PS/2 Devices
Page 44 Page 46

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.
Top Page Image Contents