Ampro Corporation XTX 820 manual Video Interface, CRT Interface, Internal Graphics Features

Chapter 3			Hardware
Table 3-19. Simplified Keyboard, Mouse, and Infrared (IrDA) Port Pin/Signal Descriptions (J3)
	J3	Signal	Description
	Pin #
	98	KBDAT	Keyboard Data – This signal provides the keyboard data.
	96	KBCLK	Keyboard Clock – This signal provides the clocks to the keyboard.
	94	MSDAT	Mouse Data – This signal provides the mouse data.
	92	MSCLK	Mouse Clock – This signal clocks the data from the mouse.
		GND	Signal Ground
	61	IRTX	IR Transmit Data (HPSIR or ASKIR)
	59	IRRX	IR Receive Data (HPSIR or ASKIR)

Note: The shaded area denotes power or ground.

Video Interface

The Memory & Graphics Hub (Northbridge) chip (82915GM) provides the integrated video controller for the CRT, LVDS, SDVO, and TV Out ports. The 82915GM video chip features are listed here and with the specific video port on the following pages.

♦See Table 3-20 for the CRT information.

♦See Table 3-21 for the LVDS information.

♦See Table 3-23 for the TV Out information.

♦See Table 3-29 for the SDVO information.

Internal Graphics Features

•Supports up 128 MB of system memory dynamically allocated by Dynamic Video Memory Technology (DVMT) 3.0

•Provides Intel® Dual-Frequency Graphics Technology

•Provides Intel® Smart 2D Display Technology

•Provides High Quality 3D Setup and Render Engine

•Provides High Quality Texture Engine

•Supports Dual Independent display pipes

Video Engine

•Supports Hardware Motion Compensation for MPEG2

•Provides Sub-Picture and De-interlacing support

•Provides Dynamic Bob and Weave support

•Provides Video Overlay support

CRT Interface

The CRT interface supports the following features:

•Supports maximum DAC frequency up to 400 MHz

•Supports 8-bits for each RGB DAC or 24-bit RAMDAC

•Supports up to 2048 x 1536 @ 75Hz (QXGA) and 1920 x 1080 @ 85Hz for HDTV

•Supports DDC2B compliance

Refer to Table 3-20 for the Simplified CRT Interface Pin/Signal Descriptions.

XTX 820 Reference Manual 39