Intel 945G User Manual - Page 17

Intel® 945G Express Chipset Development Kit User's Manual Development Kit Features 2.5.1 2.5.1.1 2.5.1.2 2.5.1.3 Intel® 945G Memory Controller Hub ((G)MCH) The Intel® 945G Express Chipset (G)MCH provides the processor interface optimized for Intel Pentium 4 Processors, system memory interface, DMI, and internal/external graphics. It provides flexibility and scalability in graphics and memory subsystem performance. The following sections describe the reference board's implementation of the Intel 945G Express Chipset (G)MCH features. • 1202 FCBGA package (34 mm x 34 mm) • 533/800 MHz processor system bus • 32-bit host bus addressing • 12 deep in-order queue • Processor support for the Pentium 4 Processor with HT Technology in the 775-Land LGA Package and the Celeron D Processor. • System memory controller (DDR2 implemented) ⎯ Supports Dual Channel or Single Channel operation ⎯ Four DIMM slots (2 DIMM per channel) ⎯ DDR2 533/667 MHz • Direct Media Interface (DMI) • Integrated graphics based on the Intel® Graphics Media Accelerator 950 ⎯ Directly supports on-board VGA connector ⎯ Supports resolutions up to 2048 x 1536 @ 75 Hz refresh. • SDVO interface via Media Expansion Card connector provides maximum display flexibility ⎯ Operates in Single Channel and Dual Channel modes. ⎯ Flat panels up to 2048x1536 @ 60 Hz or digital CRT/HDTV at 1920x1080 @ 8 Hz. ⎯ Dual independent display options with digital display. System Memory The customer reference board supports DDR2 533/667 MHz main memory. Four 240-pin DIMM connectors (two per channel) on the board support unbuffered, non-ECC, single and double-sided DDR2 400/533 MHz DIMMs. These DIMMs provide the ability to use up to 1 Gbit technology for a maximum of 4 GBytes system memory. The system memory controller will operate in three modes: Single Channel, Dual Channel, and Virtual Single Channel. Best performance is obtained in Dual Channel mode. In order to run in Dual Channel mode, both channels must contain the same total amount of memory. It is not necessary to have identical DIMM configurations. For more information on how to configure the system memory, refer to Section 3.3.1, "Memory Configurations." Direct Media Interface (DMI) The Intel 945G Express MCH's Direct Media Interface (DMI) provides a high-speed bidirectional chip-to-chip interconnect for communication with the Intel® ICH7 or ICH7R (not included with the development kit). PCI Express* x16 Graphic Interface The (G)MCH contains one 16-lane (x16) PCI Express port intended for an external PCI Express graphics card. The PCI Express port is compliant to the PCI Express Base Reference #308823 17