R
Connecting to Host Computer
The PC4 connects to any PC using Microsoft ? Windows ?
2000, Windows XP, or Linux (1) operating systems through
the built-in, standard IEEE 1284 DB25 parallel (printer) port
connector. (2) To fully utilize the higher speeds of this cable,
the host PC must have a parallel port that is enabled to
support extended capability port (ECP) mode. (3)
If ECP mode is not enabled, the PC4 defaults to compatibility
Xilinx Parallel Cable IV
error-free connection. A very small footprint, keyed mating
connector is all that is required on the target system. Refer
to Figure 4 for the appropriate connector pin assignments
and sample vendor part numbers. Figure 5 shows the POD
and its dimensions.
The Parallel Cable IV can also interface to target systems
using flying lead wires. However, these are not included with
PC4. The flying lead wires and additional ribbon cables can
be purchased separately from the Xilinx Online Store .
mode and does not run at the optimum speeds listed.
X-Ref Target - Figure 2
Notes:
1.
2.
3.
See the System Requirements section in the ISE software
manual for more specific operating system requirements.
Xilinx makes no representations about compatibility with third-
party IEEE 1284 add-on adapters and does not support the add-
on adapters.
Refer to host PC BIOS to see if ECP mode is enabled.
High Performance Ribbon Cable
An insulation displacement connector (IDC) ribbon cable is
supplied and recommended for connection to target
systems. See Figure 2 and Figure 3 . This cable
incorporates multiple signal-ground pairs and facilitates
X-Ref Target - Figure 3
6"
Figure 2: High Performance Ribbon Cable
Polarizing Key
pin#1 indicator stripe
Polarizing Key
2
4
6
8
10
12
14
1
3
5
7
9
11
13
2
4
6
8
10
12
14
1
3
5
7
9
11
13
Notes:
1. Ribbon Cable - 14 conductor, 1.0 mm centers Round Conductor Flat Cable, 28AWG (7 x 36) stranded copper conductors;
gray PVC with pin #1 edge marked.
2. 2 mm Ribbon, Female Polarized Connectors - IDC connection to ribbon, contacts are beryllium copper plated with
30 micro inches gold plating over 50 micro inches nickel, connectors mate to 0.5 mm square posts on 2 mm centers.
ds097_03_050508
Figure 3: Ribbon Cable Diagram
DS097 (v2.5) May 14, 2008
Product Specification
2
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