Intel I/O Controller Hub 7 (Ich7) - Intel 945G - Bulk Single Unit Atx Exp User Manual

2.5.1.5 Analog and Serial Digital Video Out (SDVO) Displays
The (G)MCH provides interfaces to a progressive scan analog monitor and two SDVO
ports (multiplexed with PCI Express x16 graphics port signals) capable of driving an MEC
card. The digital display channels are capable of driving a variety of SDVO devices (e.g.,
TMDS, TV-Out). Note that SDVO only works with the integrated graphics device (IGD).
The MEC card adds Video-In capabilities. The (G)MCH provides two multiplexed SDVO
ports that are capable of driving up to 200 MHz pixel clock each. The (G)MCH can make
use of these digital display channels via a media expansion card.
The (G)MCH SDVO ports can each support a single-channel SDVO device. If both ports
are active in single-channel mode, they can have different display timing and data.
Alternatively, the SDVO ports can be combined to support dual channel devices,
supporting higher resolutions and refresh rates. The (G)MCH is compliant with DVI
Specification 1.0. When combined with a DVI-compliant external device and connector,
the (G)MCH has a high-speed interface to a digital display (e.g., flat panel or digital CRT).
The (G)MCH supports Hot Plug and Display for the PCI Express x16 graphics port. This is
not supported for MEC cards. Features of the (G)MCH SDVO include:
• SDVO ports supported in single, single-combined, or dual operation modes
• Analog display support
• 400 MHz integrated 24-bit RAMDAC
• Up to 2048x1536 @ 75 Hz refresh
• Hardware color cursor support
• DDC2B-compliant interface
• Dual independent display options with digital display
• Multiplexed digital display channels (supported with MEC card)
• Two channels multiplexed with PCI Express port
• 200 MHz dot clock on each 12-bit interface
• Can combine two channels to form one larger interface
• Supports flat panels up to 2048x1536 @ 60 Hz or digital CRT/HDTV at 1920x1080
@ 85 Hz
• Supports Hot Plug and Display
• Supports TMDS transmitters or TV-Out encoders
• MEC card utilizes PCI Express graphics x16 connector
• Three display control interfaces (I
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2.5.2 Intel I/O Controller Hub 7 (ICH7)
The ICH7 provides extensive I/O support. The following sub-sections provide an overview
of the ICH7 capabilities.
Direct Media Interface
Direct Media Interface (DMI) is the chip-to-chip connection between the Memory
Controller Hub / Graphics Memory Controller Hub ((G)MCH) and I/O Controller Hub 7
(ICH7). This high-speed interface integrates advanced priority-based servicing, which
allows concurrent traffic and true isochronous transfer capabilities. Base functionality is
completely software-transparent, permitting current and legacy software to operate
normally.
Reference #308823
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Intel 945G Express Chipset Development Kit User's Manual
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C/DDC) multiplexed on PCI Express port
Development Kit Features
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