Graphics Memory Usage; Graphics Resolution; Vga Analog Interface And Connector J3; D-Sub Vga Connector J3 Pinout - Kontron CP308 User Manual

Functional Description
2.3.5.1

Graphics Memory Usage

The GS45 GMCH supports the Dynamic Video Memory Technology (DVMT 5.0). This
technology ensures the most efficient use of all available memory for maximum 3D graphics
performance. DVMT dynamically responds to application requirements allocating display and
texturing memory resources as required.
The graphics controller is fed with data from the GS45 memory controller. The graphics perfor-
mance is directly related to the amount of memory bandwidth available.
2.3.5.2

Graphics Resolution

The GS45 GMCH can directly drive a progressive scan analog monitor up to a resolution of
2048 x 1536 pixels (QXGA).
2.3.5.3

VGA Analog Interface and Connector J3

The 15-pin female connector J3 is used to connect a VGA analog monitor to the CP308.
Figure 2-2: D-Sub VGA Con. J3
10
15
11
6
* Pin 10 is normally defined as Ground but is used on the CP308 as detection signal of a con-
nected monitor if the uEFI BIOS setting for the CP308 is "AUTO" (the uEFI BIOS default set-
ting is "FRONT").
Note ...
If the automatic VGA detection mechanism on the CP308 is used, the user
must ensure that the VGA cable and the connected monitor have a GND signal
on pin 10. Otherwise the interface is not operable.
Page 2 - 14
Table 2-11: D-Sub VGA Connector J3 Pinout
PIN
5
1
2
3
10*
13
14
12
15
9
1
5,6,7,8
4,11
SIGNAL FUNCTION
Red Red video signal output
Green Green video signal output
Blue Blue video signal output
VGA_DETECT Monitor detection signal
Hsync Horizontal sync.
Vsync Vertical sync.
Sdata
²
I C data
Sclk
²
I C clock
VCC Power +5V, 1.5 A fuse
protection
GND Ground signal
NC --
CP308
I/O
O
O
O
I
TTL Out
TTL Out
I/O
I/O
O
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ID 1027-4487, Rev. 3.0