Specifications

Chapter 3 Hardware
ReadyBoard 800 Reference Manual 47
CRT Interface (J21)
Table 3-16. CRT Interface Pin/Signal Descriptions (J21)
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 Ground
6 GND Ground
7 GND Ground
8 GND Ground
9 NC Not connected
10 GND Ground
11 NC Not connected
12 DDCA Display Data Channel Data – This signal line provides information to the CPU
through the Graphics & Memory Hub 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 synchronous
output to the CRT.
14 VSYNC
Vertical Sync – This signal is used for the digital vertical synchronous output to
the CRT.
15 DDCLK Display Data Channel Clock – This signal provides the data clock to the CPU
through the Graphics & Memory Hub from the monitor. This is part of the Plug
and Play standard developed by the VESA trade association.
Note: The shaded area denotes power or ground.