MultiPRO Desktop Tool
4www.xilinx.com DS114 (v1.2) January 24, 2003
1-800-255-7778 Advance Product Specification
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External Power Supply
The MultiPRO Desktop Tool requires an external +5V DC
power supply. The power supply is a CE approved switching
regulator that operates from an AC outlet and connects to
the MultiPRO tool using a 5.5 mm x 2.1 mm plug (Figure 4).
A power switch on the MultiPRO case is provided as a con-
venience so that all other cables can remain attached.
The standard MultiPRO power supply (CUI Stack Model
DSA-0151D-05) is capable of operating from 100VAC to
240VAC at 47 Hz to 63 Hz. The +5V DC output is rated for
2.4A. This power supply can also be used with the Xilinx
Parallel Cable IV (configuration cable) instead of the sup-
plied Power Splitter Cabl e.
IEEE 1284 Cable Specifications
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.
Xilinx recommends that the MultiPRO tool be directly con-
nected to the host parallel port without the use of a switch
box. Software license "dongles" should not be at tached to the
parallel port when c ommunicating with the MultiPRO tool.
Automatic Voltage Sensing
The MultiPRO Desktop Tool continuously monitors the VREF
pin on the Serial/JTAG and SelectMAP target interface con-
nectors. The current drain from the target power supply
attached to the VREF pin is less than 10 mA at 3.3V DC. The
target system reference voltage must be regulated and can-
not have a current limiting resistor in series with the VREF
pin on the interface.
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 prefer-
able 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.
The MultiPRO output drive voltage levels do not linearly
track voltage changes on the VREF pin. An appropriate out-
put signal level is established for a range of VREF voltages.
For example, if VREF is any voltage from +3.0V DC 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 VREF voltage
and MultiPRO output signal levels.
Connecting to Host Comp uter
The MultiPRO tool connects to any PC using Win98,
Win2000, or WinNT (4.0 or higher) through the standard
IEEE 1284 DB25 parallel (printer) port connector. 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. If ECP mode is not enabled, the
MultiPRO tool will default to compatibility mode and will not
run at the optimum speeds listed.
Notes:
1. Refer to host PC BIOS to see if ECP mode is enabled.
High Performance Ribbon Cable
Two insulation displacement (IDC) ribbon cables are sup-
plied and recommended for connection to target systems.
See Figure 5 and Figure 6. These cables incorporate multi-
ple 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 appropr iate connector pin assignments and
sample vendor part numbers. The 14 conductor ribbon
cable can also be used with Parallel Cable IV.
.
Figure 4: Standard External +5V DC Power Brick
Table 2: Output Signal Levels as a Function of VREF
VREF Voltage on Target
System (V DC) MultiPRO Output
Signal Levels (V DC)
0.80 to 1.65 1.5
1.65 to 2.00 1.8
2.00 to 3.00 2.5
3.00 to 5.00 3.3
Figure 5: High Performance Ribbon Cables
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