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EZTag User Guide
Parallel Download Cable
The Parallel Download Cable consists of a cable assembly containing
logic to protect your PC's parallel port and a set of headers to connect
to your target system.
Using the Parallel Download Cable requires a PC equipped with an
AT compatible parallel port interface with a DB25 standard printer
connector. Figure 2-4 shows the Parallel Download Cable.
Connection to Host Computer
DB-25 Connector
May be required to connect
to host computer
Parallel
XChecker
Cable Assembly
X1724a
Figure 2-4 Parallel Download Cable and Accessories
The cable assembly contains logic designed to electrically isolate the
target system from the parallel port of your PC host system.
2-8
DB25 Standard
DB-9 Connector
Parallel Connector
.. ..
Row 1
Row 2
Connection to Target System
Keyed Connection to Target System
Test Fixture
Enlarged to show
mating plugged slots
Gnd
+5V
Flying Lead
Connector 1
JTAG
Flying Lead
Connector 2
Xilinx Development System
Connect to
Key
FPGA
Demo Board
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