82G33 datasheet(362/437 Pages) INTEL

362 / 437 page

Functional Description

362

Datasheet

10.5.3

Texture Engine

The GMCH allows an image, pattern, or video to be placed on the surface of a 3D

polygon. The texture processor receives the texture coordinate information from the

setup engine and the texture blend information from the scan converter. The texture

processor performs texture color or ChromaKey matching, texture filtering

(anisotropic, trilinear, and bilinear interpolation), and YUV-to-RGB conversions.

10.5.4

Raster Engine

The raster engine is where the color data (such as, fogging, specular RGB, texture

map blending, etc.) is processed. The final color of the pixel is calculated and the

RGBA value combined with the corresponding components resulting from the texture

engine. These textured pixels are modified by the specular and fog parameters. These

specular highlighted, fogged, textured pixels are color blended with the existing values

in the frame buffer. In parallel, stencil, alpha, and depth buffer tests are conducted

that determine whether the frame and depth buffers will be updated with the new

pixel values.

10.6

Display Interfaces (Intel® 82Q35, 82Q33, 82G33

Only GMCH)

The GMCH have three display ports; one analog and two digital. Each port can

transmit data according to one or more protocols. The digital ports are connected to

an external device that converts one protocol to another. Examples of these are TV

encoders, external DACs, LVDS transmitters, HDMI transmitters, and TMDS

transmitters. Each display port has control signals that may be used to control,

configure and/or determine the capabilities of an external device.

The GMCH has one dedicated display port, the analog port. SDVO ports B and C are

multiplexed with the PCI Express Graphics (PEG) interface and are not available if an

external PEG device is in use. When a system uses a PEG connector, SDVO ports B

and C can be used via an ADD2 (Advanced Digital Display 2) or MEC (Media Expansion

Card).

• The (G)MCH’s analog port uses an integrated 350 MHz RAMDAC that can directly

drive a standard progressive scan analog monitor up to a resolution of 2048x1536

pixels with 32-bit color at 75 Hz.

• The GMCH’s SDVO ports are each capable of driving a 225MP pixel rate. Each port

is capable of driving a digital display up to 1920x1200 @ 60Hz.

The GMCH is compliant with DVI Specification 1.0. When combined with a DVI

compliant external device and connector, the GMCH has a high speed interface to a

digital display (e.g., flat panel or digital CRT).

The GMCH is compliant with HDMI. When combined with a HDMI compliant external

device and connector, the external HDMI device can supports standard, enhanced, or

high-definition video, plus multi-channel digital audio on a single cable.

82G33 Datasheet(PDF) 362 Page - Intel Corporation

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