MultiPRO Desktop Tool
4www.xilinx.com DS114 (v1.5) September 29, 2004
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 switch-
ing 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 pro-
vided as a convenience so that all other cables can remain
attached.
The standard MultiPRO power supply (CUI Inc.
#DTS050400UC-P5P-KH) is capable of operating from
100VAC to 240VAC at 47 Hz to 63 Hz. The +5V DC output
is rated for 4A. This power supply can also be used with the
Xilinx Parallel Cable IV (configuration cable) instead of the
supplied Power Splitter Cable.
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 attached to the
parallel port when communicating with the MultiPRO tool.
Automatic Voltage Sensing
The MultiPRO Desktop Tool continuously monitors the
VREF pin on the Serial/JTAG and SelectMAP target inter-
face connectors. 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 cannot 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 Computer
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 appropriate 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
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