HW-USB-II-G Xilinx Inc, HW-USB-II-G Datasheet - Page 16

• Manufacturer Part Number: HW-USB-II-G
• Description: PLATFORM CABLE USB II
• Manufacturer: Xilinx Inc

Specifications of HW-USB-II-G

• Accessory Type: USB Platform Cable
• For Use With/related Products: Xilinx FPGA, CPLDS, Platform Flash PROMs, XC18V00 PROMs, System ACE MPM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 122-1572

X-Ref Target - Figure 16
Notes:
1.
2.
3.
4.
5.
DS593 (v1.2.1) March 17, 2011
Example implies that V
Attach the following 2-mm connector pins to digital ground: 3, 5, 7, 9, and 11.
The cable uses an open-drain driver to control the pseudo ground (PGND) signal — an external pull-up resistor is required.
Assumes that the multiplexor supply voltages pins are connected to V
Pin 13 is grounded on legacy Xilinx USB cables (models DLC9, DLC9G and DLC9LP), and Parallel Cable IV (model DLC7). These cables
need to be manually detached from the 2-mm connector to allow the primary configuration source to have access to the JTAG chain.
PGND
GND
V
TDO
TMS
TCK
REF
TDI
(5)
(2)
Connector
2-mm
10
13
2
8
4
6
*
TDO
TMS
TCK
TDI
V
CCAUX
CCO
(1)
, V
CCJ
, and/or V
V
Figure 16: Example Using PGND in a JTAG Chain
CCAUX
CCAUX
for various devices in the JTAG chain are set to the same voltage.
Pull-Up
Required
www.xilinx.com
V
(3)
CCAUX
1 KΩ
CCAUX
A
B
(4)
.
S
Y
A
B
(4)
S
B
Y
A
(4)
S
Y
TDI
TMS
JTAG CHAIN
Platform Cable USB II
MUX Truth Table
TCK
S
H
L
TDO
Output
DS593_16_021408
Y = A
Y = B
16