Ampro Corporation 700 manual Video Interfaces J8, J9, J7, CRT Interface J8

Chapter 3 Hardware

Video Interfaces (J8, J9, J7)

The VT8606 chip provides the graphics control and video signals to the traditional glass CRT monitors and the LCD and LVDS flat panel displays. The chip features are listed below:

CRT features:

•Supports a max resolution of 1600 x 1200 with video frame buffer set at 8MB

•Supports a maximum allowable video frame buffer size of 32MB UMA (Unified Memory Architecture)

•AGP 4x graphics (always enabled)

•Compliant with Rev 2.0 of AGP Interface

Flat Panel features:

•Supports (3.3V, 5V, or 12V) output to both DSTN and TFT flat panels through a 36-bit interface

•Supports TFT panel sizes from VGA (320x480) up to SXGA+ and UXGA+ (1400x1050).

•Supports LCD VGA and SVGA panels with 9-, 12-, 18-bit interface (1 Pixel/Clock)

•Supports UXGA and SXGA active matrix panels with 1x24-bit interface (2 Pixels/Clock)

•Supports 1 or 2 channel LVDS outputs

CRT Interface (J8)

Table 3-20. CRT Interface Pin/Signal Descriptions (J8)

Pin #	Signal	Description
1	RED	Red – This is the Red analog output signal to the CRT.
2	GREEN	Green – This is the Green analog output signal to the CRT.
3	BLUE	Blue – This is the Blue analog output signal to the CRT.
4	NC	Not connected
5	GND	Digital Ground
6	GND	Digital Ground
7	GND	Digital Ground
8	GND	Digital Ground
9	NC	Not connected
10	GND	Digital Ground
11	NC	Not connected
12	DDDA	Display Data Channel Data – This signal line provides information to the CPU
		through the Northbridge about the monitor type, brand, and model. This is part
		of the Plug and Play standard developed by the VESA trade association.
13	HSYNC	Horizontal Sync – This signal is used for the digital horizontal sync output to
		the CRT.
14	VSYNC	Vertical Sync – This signal is used for the digital vertical sync output to the CRT.
15	DDCLK	Display Data Channel Clock – This signal line provides the data clock signal to
		the CPU through the Northbridge from the monitor. This is part of the Plug and
		Play standard developed by the VESA trade association.

Notes: The shaded area denotes power or ground.

46 Reference Manual ReadyBoard 700