FPGA Design Demonstration Board
Hardware User Guide
3-11
I/O Line Connections
There are 16 I/O lines that connect the XC3020A and XC4003E
FPGAs. These are shown in the following table.
Optional Crystal Oscillator (Y1)
You can add a standard 4-pin crystal oscillator to the FPGA Demon-
stration Board. The oscillator output drives the XC3020A XTL2 input
at pin 43 and the XC4003E PGCK1 input at pin 13.
Prototype Area
The Prototype area is a 0.1-inch grid of holes where you can add
additional circuitry to the demonstration board. A +5 V bus (compo-
Table 3-5 I/O Line Connections for XC3020A and XC4003E
Devices
I/O Line
XC3020A Pin
XC4003E Pin
0
61
10
1
62
9
2
63
8
3
64
7
4
65
6
5
66
5
6
67
4
7
68
3
8
2
84
9
3
83
10
4
82
11
5
81
12
6
80
13
7
79
14
8
78
15
9
77
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