82G33 datasheet(366/437 Pages) INTEL

366 / 437 page

Functional Description

366

Datasheet

10.6.2.7.3 Connectors

Target TV connectors support includes the CVBS, S-Video, Component, HDMI and

SCART connectors. The external TV encoder in use will determine the method of

support.

10.6.2.8

Control Bus

Communication to SDVO registers and if used, ADD2/MEC PROMs and monitor DDCs,

are accomplished by using the SDVO_CTRLDATA and SDVO_CTRLCLK signals through

the SDVO device. These signals run up to 1 MHz and connect directly to the SDVO

device. The SDVO device is then responsible for routing the DDC and PROM data

streams to the appropriate location. Consult SDVO device datasheets for level shifting

requirements of these signals.

Intel® SDVO Modes

The port can be dynamically configured in several modes:

• Standard. This mode provides baseline SDVO functionality. It supports pixel rates

between 25 MP/s and 225 MP/s. It uses three data pairs to transfer RGB data.

• Dual Standard. This mode provides Standard data streams across both SDVOB

and SDVOC. Both channels can only run in Standard mode (3 data pairs) and each

channel supports Pixel Rates between 25 MP/s and 225 MP/s.

⎯ Dual Independent Standard. In Dual Independent Standard mode, each SDVO

channel will transmit a different pixel stream. The data stream across SDVOB

will not be the same as the data stream across SDVOC.

⎯ Dual Simultaneous Standard. In Dual Simultaneous Standard mode, both

SDVO channels will transmit the same pixel stream. The data stream across

SDVOB will be the same as the data stream across SDVOC. The display

timings will be identical, but the transfer timings may not be (i.e., SDVOB

clocks and data may not be perfectly aligned with SDVOC clock and data as

seen at the SDVO device(s)). Since this uses just a single data stream, it uses

a single pixel pipeline within the GMCH.

10.6.3

Multiple Display Configurations

Microsoft Windows* 2000, Windows* XP, and Windows* Vista* operating systems

provide support for multi-monitor display. Since the GMCH has several display ports

available for its two display pipes, it can support up to two different images on

different display devices. Timings and resolutions for these two images may be

different. The GMCH supports Dual Display Clone, Dual Display Twin, and Extended

Desktop.

Dual Display Clone uses both display pipes to drive the same content, at the same

resolution and color depth to two different displays. This configuration allows for

different refresh rates on each display.

Dual Display Twin uses one of the display pipes to drive the same content, at the

same resolution, color depth, and refresh rates to two different displays.

Extended Desktop uses both display pipes to drive different content, at potentially

different resolutions, refresh rates, and color depths to two different displays. This

configuration allows for a larger Windows Desktop by using both displays as a work

surface.

Note: The GMCH is also incapable of operating in parallel with an external PCI Express

graphics device. The GMCH can, however, work in conjunction with a PCI graphics

adapter.

82G33 Datasheet(PDF) 366 Page - Intel Corporation

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