910GL datasheet(252/426 Pages) INTEL

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Functional Description

252

Datasheet

Analog Content Protection

Analog content protection is provided through the external encoder using Macrovision 7.01. DVD

software must verify the presence of a Macrovision TV encoder before playback continues.

Simple attempts to disable the Macrovision operation must be detected.

Connectors

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

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

12.7.2.2.4

Control Bus

Communication to SDVO registers and if utilized, ADD2 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. The mode supports pixel rates

between 25 and 200 MP/s. It uses three data pairs to transfer RGB data.

• Extended (82915G only) – This mode adds Alpha support to data stream. Extended mode

supports pixel rates between 25 MHz and 200 MP/s. The mode uses four data channels and is

only supported on SDVOB. It leverages channel C (SDVOC) Red pair as the Alpha pair for

channel B (SDVOB).

• Dual Standard – This mode uses 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 and 200 MP/s.

⎯ Dual Independent Standard (82915G only) - In Dual Independent Standard mode, each

SDVO channel will see a different pixel stream. The data stream across SDVOB will not

be the same as the data stream across SDVOC. This mode is only supported on the

82915G/82915GV/82915GL/82910GL GMCH.

⎯ Dual Simultaneous Standard - In Dual Simultaneous Standard mode, both SDVO

channels will see 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.

12.7.3

Multiple Display Configurations

Microsoft Windows* 2000 and Windows* XP operating systems have enabled support for multi-

monitor display. Since the GMCH has several display ports available for its two 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 Intel Dual Display Clone, Intel Dual Display

Twin, and Extended Desktop.

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