Altera LCD Multimedia HSMC User Manual
Page 35
2–27
Altera Corporation
LCD Multimedia HSMC
August 2008
Interfaces/ Connectors
1
On the LCD Multimedia HSMC
users still need to multiplex the
VGA synchronization and RGB data to fit the VGA TDM block
input timing as mentioned in
Figure 2–6
and
Figure 2–7
. The
timing protocol of the VGA TDM controller is similar to the
LCD
TDM controller. The input color data bus HC_VGA_DATA
changes from 8-bit to 10-bit, and the VGA TDM controller uses
the HC_VGA_HS to determine the position of the BLUE color
sample.
Figure 2–15. V.G.A. Horizontal Timing Specification
Table 2–20. VGA Horizontal Timing Specification
Configuration
Resolution(HxV)
a(us)
b(us)
c(us)
d(us)
Pixel clock(Mhz)
VGA(60Hz)
640x480
3.8
1.9
25.4
0.6
25 (640/c)
VGA(85Hz)
640x480
1.6
2.2
17.8
1.6
36 (640/c)
SVGA(60Hz)
800x600
3.2
2.2
20
1
40 (800/c)
SVGA(75Hz)
800x600
1.6
3.2
16.2
0.3
49 (800/c)
SVGA(85Hz)
800x600
1.1
2.7
14.2
0.6
56 (800/c)
XGA(60Hz)
1024x768
2.1
2.5
15.8
0.4
65 (1024/c)
XGA(70Hz)
1024x768
1.8
1.9
13.7
0.3
75 (1024/c)
XGA(85Hz)
1024x768
1.0
2.2
10.8
0.5
95 (1024/c)
1280x1024(60Hz)
1280x1024
1.0
2.3
11.9
0.4
108 (1280/c)
Table 2–21. VGA Vertical Timing Specification
Configuration
Resolution (HxV)
a(lines)
b(lines)
c(lines)
d(lines)
VGA(60Hz)
640x480
2
33
480
10
VGA(85Hz)
640x480
3
25
480
1
SVGA(60Hz)
800x600
4
23
600
1