PEP Modular Computers CP331, Руководство пользователя, Страница: 29 / 44

CP331 Functional Description
ID 19947, Rev. 0200 Page 2 - 5
©
2000 PEP Modular Computers GmbH
2.4 Board Interfaces
2.4.1 Embedded-Memory Interface
The memory interface can be devided into two parts, the video memory interface and
the VGA BIOS interface. The CP331 is provided with up to 4MB of embedded video
memory with the C&T 69030 graphic controller chip or, respectively, 2MB with the
C&T
69000 controller chip. The installed SGRAM provides the maximum resolution at
the highest controller refresh rate. A 64kB ob-board Flash memory is designed to con-
tain the VGA BIOS.
2.4.2 CRT Interface
Figure 2-2: Orientation of CRT Interface
The CRT interface is a standard VGA interface for connecting CRT
monitors. It is implemented by a 3-row 15-pin DSUB connector.
The pinouts of the VGA connector are shown in the following table.
N/C = Non connected.
Table 2-1: VGA Connector Pinouts
Pin Signal Pin Signal Pin Signal
1 Red 6 Analog GND 11 N/C
2 Green 7 Analog GND 12 DDAT
3 Blue 8 Analog GND 13 Hsync
4 N/C 9 VCC 14 Vsync
5 GND 10 GND 15 DCLK