R
MultiPRO Desktop Tool
IEEE 1284 Cable Specifications
Connecting to Host Computer
Level 1 compliant host parallel ports are only designed to
operate over a maximum cable length of 10 feet. Level 2
compliant ports are designed to operate over a maximum
cable length of 33 feet. MultiPRO uses a Level 2 compliant
cable interface buffer. The MultiPRO case has an integrated
mini-centronics connector for attachment to off-the-shelf
IEEE 1284 cables.
The MultiPRO tool connects to any PC using Windows or
1
Linux through the built-in, standard IEEE 1284 DB25 parallel
2
(printer) port connector . To fully utilize the higher speeds of
this cable, the host PC must have a parallel port that is
3
enabled to support extended capability port (ECP) mode. If
ECP mode is not enabled, the MultiPRO tool will default to
compatibility mode and will not run at the optimum speeds
listed. Performance also depends on the MultiPRO Desktop
Xilinx recommends that the MultiPRO tool be directly
connected to the host parallel port without the use of a switch
box. Software license "dongles" should not be attached to the
parallel port when communicating with the MultiPRO tool.
4
Tool firmware revision and ISE iMPACT software version.
Notes:
1. Refer to ISE software manuals for details regarding supported
operating systems.
2. Xilinx makes no representations about compatibility with third-
party IEEE 1284 add-on adapters and does not support the add-
on adapters.
Automatic Voltage Sensing
3. Refer to host PC BIOS to see if ECP mode is enabled.
4. Refer to the MultiPRO Desktop Tool firmware history at
http://www.xilinx.com/support/programr/mp_history.htm.
The MultiPRO Desktop Tool continuously monitors the V
pin on the Serial/JTAG/SPI and SelectMAP target interface
connectors. The current drain from the target power supply
REF
attached to the V
pin is less than 10 mA at 3.3V DC. The
REF
High Performance Ribbon Cable
target system reference voltage must be regulated and
cannot have a current limiting resistor in series with the
Two insulation displacement connector (IDC) ribbon cables
are supplied and recommended for connection to target
systems. See Figure 5 and Figure 6. These cables incorporate
multiple signal-ground pairs and facilitate error-free
connection. A very small footprint, keyed mating connector is
all that is required on the target system. Refer to Figure 7 and
Figure 8 for the appropriate connector pin assignments and
sample vendor part numbers. The 14-conductor ribbon cable
can also be used with Parallel Cable IV.
V
pin on the interface.
REF
No damage will occur to the MultiPRO Desktop Tool if the
target system is powered when the MultiPRO tool is not
powered. However, when powering up a system, it is
preferable to apply power to the MultiPRO tool first, followed
by power to the target system. The sequence should be
reversed when powering down.
The MultiPRO Desktop Tool always puts interface signals
on inactive ports in a 3-state condition.
X-Ref Target - Figure 5
The MultiPRO output drive voltage levels do not linearly
track voltage changes on the V
pin. An appropriate
REF
output signal level is established for a range of V
REF
voltages. For example, if V
is any voltage from +3.0V DC
REF
to +5.0V DC, the MultiPRO tool sets the output signals for
the respective port to +3.3V DC.
Refer to Table 2 for the relationship between V
and MultiPRO output signal levels.
voltage
REF
Table 2: Output Signal Levels as a Function of V
REF
Figure 5: High Performance Ribbon Cables
VREF Voltage on Target
System
MultiPRO Output
Signal Levels
Units
0.80 to 1.65
1.65 to 2.00
2.00 to 3.00
3.00 to 5.00
1.5
1.8
2.5
3.3
V
V
V
V
.
DS114 (v1.9) February 8, 2008
www.xilinx.com
Product Specification
4
XILINX [ XILINX, INC ]
