Chapter 3 | Hardware |
Video Interfaces (J3, J4, J5, J31)
The Northbridge (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 shared memory
•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
•Supports TFT panel sizes from VGA (320x480) up to SXGA+ and UXGA+ (1400x1050).
•Supports LCD VGA and SVGA panels with
•Supports UXGA and SXGA active matrix panels with
•Supports 1 or 2 channel LVDS outputs
CRT Interface
Table
Pin # | Signal | Description |
1 | RED | Red – This is the Red analog output signal to the CRT. |
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2 | GND | Ground |
3 | GREEN | Green – This is the Green analog output signal to the CRT. |
4 | GND | Ground |
5 | BLUE | Blue – This is the Blue analog output signal to the CRT. |
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6 | GND | Ground |
7 | HSYNC | Horizontal Sync – This signal is used for the digital horizontal sync |
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| output to the CRT. |
8 | GND | Ground |
9 | VSYNC | Vertical Sync – This signal is used for the digital vertical sync output to |
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| the CRT. |
10 | +5V | +5 volts +/- 5% through Fuse (F5 is next to J5 connector on board) |
Notes: The shaded area denotes power or ground.
LittleBoard 550 | Reference Manual | 55 |
