Datasheet

Platform Cable USB
DS300 (v3.3) June 25, 2014 www.xilinx.com
Product Specification 8
R
Notes:
1. Ribbon Cable: 14 conductor, 1.0 mm center, round conductor flat
cable, 28 AWG (7 x 36) stranded conductors, gray PVC with pin 1
edge marked.
2. 2 mm ribbon female polarized connector, IDC connection to
ribbon. Contacts are beryllium copper plated, 30 micro-inches
gold plating over 50 micro-inches nickel. The connectors mate to
0.5 mm square posts on 2 mm centers.
3. One ribbon cable is supplied with the Platform Cable USB.
Additional ribbon cables can be purchased separately (see
"Ordering Information," page 20).
Flying Wire Adapter
An adapter is provided for attachment to legacy target
systems that do not incorporate a shrouded male 2 mm
connector (Figure 14). The adapter makes it possible to use
flying wires for connection to distributed terminals on a
target system.
The adapter is a small circuit board with two connectors
(Figure 15). The connector on the bottom side of the
adapter mates with the 14-pin Platform Cable USB male
2 mm connector. A 7-pin right-angle header on the top
side of the adapter mates with the standard Xilinx flying
wire set (included).
Notes:
1. This method of connection is not recommended because it can
result in poor signal integrity. Additionally, damage can result if
the leads are unintentionally connected to high voltages.
2. One flying wire adapter with wires is supplied with the Platform
Cable USB. Additional flying wire adapters with wires can be
purchased separately (see "Ordering Information," page 20).
Physical Connection to the Host
Each Platform Cable USB includes a detachable, Hi-Speed
certified 1.8 meter A-B cable (Figure 16). Under no
circumstances should user-supplied cables exceed 5 meters.
Sub-channel cables (intended for low-speed 1.5 Mb/s
signaling) should not be used with Platform Cable USB.
A standard series B receptacle is incorporated into the left
side of the case for mating with the detachable Hi-Speed A-B
cable. A separate chassis ground is attached to the A-B cable
drain wire and returns ESD current to the host system ground.
Target Interface Connectors
Mating connectors for attachment of the high-performance
ribbon cable to a target system are available in both
through-hole and surface mount configurations (Figure 17).
Shrouded and/or keyed versions should always be used to
guarantee proper orientation when inserting the cable. The
connector requires only 0.162 in
2
of board space.
The target system voltage applied to pin 2 of this connector
is used as a reference for the output buffers that drive the
TDI_DIN_MOSI, TCK_CCLK_SCK, and TMS_PROG_SS
pins.Table 3 provides some third-party sources for mating
connectors that are compatible with the Platform Cable
USB ribbon cable.
X-Ref Target - Figure 13
Figure 13: High-Performance Ribbon Cable
X-Ref Target - Figure 14
Figure 14: Flying Wire Adapter (Top) with Wires
X-Ref Target - Figure 15
Figure 15: Flying Wire Adapter (Side) w/o Wires
DS300_12_011414
STAT US
JTAG | SERIAL Vref | Vref
GND | GND
TCK | CCLK
TDO | DONE
TDI | DIN
TMS | PROG
--- | INIT
ADAPTER
DS300_13_081006
R
Made in U.S.A.
1 2 3 4 5
Serial UHG -
Model DLC9G
Platform Cable USB
Power 5V 0.07A
2mm
CONNECTOR
SIGNALS
R
Vref
PROG
CCLK
DONE
DIN
INIT
----
or Serial
1.5 < Vref < 5.0 VDC
Vref
TMS
TCK
TDO
TDI
----
JTAG
----
Gnd
HI-SPEED
CERTIFIED
USB
RoHS
Compliant
DS300_14_113004
X-Ref Target - Figure 16
Figure 16: Standard A-B Host Interface
Cable and Series B Receptacle
ds300_15_110804