Digilent 410-087P-KIT - Manual (Page 53)

Spartan-3E Starter Kit Board User Guide www.xilinx.com 53
UG230 (v1.0) March 9, 2006
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Chapter 6
VGA Display Port
The Spartan-3E Starter Kit board includes a VGA display port via a DB15 connector.
Connect this port directly to most PC monitors or flat-panel LCDs using a standard
monitor cable. As shown in
Figure 6-1 , the VGA connector is the left-most connector along
the top of the board.
The Spartan-3E FPGA directly drives the five VGA signals via resistors. Each color line has
a series resistor, with one bit each for VGA_RED, VGA_GREEN, and VGA_BLUE. The
series resistor, in combination with the 75
Ω termination built into the VGA cable, ensures
that the color signals remain in the VGA-specified 0V to 0.7V range. The VGA_HSYNC
and VGA_VSYNC signals using LVTTL or LVCMOS33 I/O standard drive levels. Drive
the VGA_RED, VGA_GREEN, and VGA_BLUE signals High or Low to generate the eight
colors shown in
Table 6-1 .
Figure 6-1: VGA Connections from Spartan-3E Starter Kit Board
1
6
11
2
7
12
3
8
13
4
9
14
5
10
15
GND
DB15
Connector
Red
Green
Blue
Horizontal Sync
Vertical Sync
270
Ω
270
Ω
270
Ω
VGA_RED
VGA_GREEN
VGA_BLUE
VGA_HSYNC
VGA_VSYNC
(H14)
(H15)
(G15)
(F15)
(F14)
(xx) = FPGA pin number
Pin 1
Pin 6
Pin 11
Pin 5
Pin 10
Pin 15
DB15 VGA Connector
(front view)
82.5
Ω
82.5
Ω
UG230_c6_01_021706