Crt Interface (J21); Table 3-16. Crt Interface Pin/Signal Descriptions (J21) - Ampro ReadyBoar 800 Reference Manual

Chapter 3

CRT Interface (J21)

Table 3-16. CRT Interface Pin/Signal Descriptions (J21)

Pin # Signal
1 RED
2 GREEN
3 BLUE
4 NC
5 GND
6 GND
7 GND
8 GND
9 NC
10 GND
11 NC
12 DDDA
13 HSYNC
14 VSYNC
15 DDCLK
Notes: The shaded area denotes power or ground.
48
Description
Red – This is the Red analog output signal to the CRT.
Green – This is the Green analog output signal to the CRT.
Blue – This is the Blue analog output signal to the CRT.
Not connected
Digital Ground
Digital Ground
Digital Ground
Digital Ground
Not connected
Digital Ground
Not connected
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.
Horizontal Sync – This signal is used for the digital horizontal sync output to
the CRT.
Vertical Sync – This signal is used for the digital vertical sync output to the
CRT.
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.
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