P0528 Terasic Technologies Inc, P0528 Datasheet - Page 39

• Manufacturer Part Number: P0528
• Description: BOARD DEV DE1 ALTERA
• Manufacturer: Terasic Technologies Inc
• Type: FPGAr

Specifications of P0528

• Contents: DE1 Board, Power Supply, USB Cable, Plastic cover and software
• For Use With/related Products: Cyclone II 2C20
• For Use With: P0033 - BOARD ADAPTER HSMC TO GPIOP0006 - BOARD ADAPTER THDB-SUMP0001 - MODULE DIGITAL CAMERA 5MP (D5M)P0307 - KIT DEV 4.3" LCD TOUCH PANEL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: DE1

During the data display interval the RGB data drives each pixel in turn across the row being
displayed. Finally, there is a time period called the front porch (d) where the RGB signals must
again be off before the next hsync pulse can occur. The timing of the vertical synchronization (vsync)
is the same as shown in Figure 4.12, except that a vsync pulse signifies the end of one frame and the
start of the next, and the data refers to the set of rows in the frame (horizontal timing). Figures 4.13
and 4.14 show, for different resolutions, the durations of time periods a, b, c, and d for both
horizontal and vertical timing.
The pin assignments between the Cyclone II FPGA and the VGA connector are listed in Table 4.8.
An example of code that drives a VGA display is described in Sections 5.2 and 5.3.
Signal Name
Configuration
Configuration
VGA(60Hz)
VGA_R[0]
VGA_R[1]
VGA_R[2]
VGA_R[3]
VGA_G[0]
VGA_G[1]
VGA_G[2]
VGA_G[3]
VGA(60Hz)
Figure 4.12. VGA horizontal timing specification.
Figure 4.13. VGA horizontal timing specification.
VGA mode
Figure 4.14. VGA vertical timing specification.
VGA mode
FPGA Pin No.
Resolution(HxV)
Resolution (HxV)
PIN_C10
PIN_D9
PIN_C9
PIN_A7
PIN_B7
PIN_B8
PIN_B9
PIN_A8
640x480
640x480
a(us)
3.8
37
a(lines)
2
b(us)
1.9
Horizontal Timing Spec
Vertical Timing Spec
c(us)
VGA Green[0]
VGA Green[1]
VGA Green[2]
VGA Green[3]
25.4
b(lines)
Description
VGA Red[0]
VGA Red[1]
VGA Red[2]
VGA Red[3]
33
d(us)
0.6
c(lines)
480
Pixel clock(Mhz)
25
(640/c)
d(lines)
10
DE1 User Manual