Intel Desktop Board DQ77KB Technical Product Specification
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1.5 Intel
®
Q77 Express Chipset
Intel Q77 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 Q77 Express
Chipset is a centralized controller for the board’s I/O paths.
For information about Refer to
The Intel Q77 chipset http://www.intel.com/products/desktop/chipsets/index.htm
Resources used by the chipset 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 High Definition Multimedia Interface (HDMI)
The HDMI port supports standard, enhanced, or high definition video, plus multi-
channel digital audio on a single cable. It is compatible with all ATSC and DVB HDTV
standards and supports eight full range channels at 24-bit/96 kHz audio of lossless
audio formats such as Dolby* TrueHD or DTS* HD Master Audio. The maximum
supported resolution is 1920 x 1200 (WUXGA). The HDMI port is compliant with the
HDMI 1.4 specification.
Depending on the type of add-in card installed in the PCI Express x4 connector, the
HDMI port will behave as described in Table 6.
Table 6. HDMI Port Status Conditions
PCI Express x4 Connector Status HDMI Port Status
No add-in card installed Enabled
Non-video PCI Express x1/x4 add-in card installed
Video PCI Express x1/x4 add-in card installed Disabled
Note: Default behavior per BIOS setup option.