Intel DB75EN Technical Product Specification - Page 22
Intel, B75 Express Chipset - technical product specification
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Intel Desktop Board DB75EN Technical Product Specification 1.5 Intel® B75 Express Chipset Intel B75 Express Chipset with Intel Flexible Display Interconnect (Intel FDI) and Direct Media Interface (DMI) interconnect provides interfaces to the processor and the display, USB, SATA, LPC, LAN, and PCI Express interfaces. The Intel B75 Express Chipset is a centralized controller for the board's I/O paths. For information about The Intel B75 chipset Resources used by the chipset Refer to http://www.intel.com/products/desktop/chipsets/index.htm Chapter 2 1.5.1 Direct Media Interface (DMI) Direct Media Interface (DMI) is the chip-to-chip connection between the processor and PCH. This high-speed interface integrates advanced priority-based servicing allowing for concurrent traffic and true isochronous transfer capabilities. 1.5.2 Display Interfaces Display is divided between the processor and the PCH. The processor houses the memory interface, display planes, and pipes while the PCH has transcoder and display interface or ports. The PCH receives the display data over Intel FDI and transcodes the data as per the display technology protocol and sends the data through the display interface. 1.5.2.1 Intel® Flexible Display Interconnect (Intel® FDI) Intel FDI connects the display engine in the processor with the display interfaces on the PCH. The display data from the frame buffer is processed in the display engine of the processor and sent to the PCH over the Intel FDI where it is transcoded as per the display protocol and driven to the display monitor. 1.5.2.2 Analog Display (VGA) The VGA port supports analog displays. The maximum supported resolution is 2048 x 1536 (QXGA) at a 75 Hz refresh rate. The VGA port is enabled for POST whenever a monitor is attached, regardless of the DVI-D connector status. 1.5.2.3 Digital Visual Interface (DVI-D) The DVI-D port supports only digital DVI displays. The maximum supported resolution is 2048 x 1536 at 75 Hz refresh (QXGA). The DVI-D port is compliant with the DVI 1.0 specification. 22