Cable Hardware
Hardware User Guide
1-19
Configuring FPGAs With the XChecker Cable
This section details the connections needed to configure FPGAs with
the XChecker Cable.
Note
If you are using the Xilinx FPGA Design Demonstration Board,
see the “Demonstration Board Operation” section of the “FPGA
Design Demonstration Board” chapter for specific configuration
information.
RD (TDO)
Read Data – Reads back
data from the target
system is read at this pin.
Connect to system
TDO pin.
TDI
Test Data In – this signal is
used to transmit serial test
instructions and data.
Connect to system TDI
pin.
TCK
Test Clock – this clock
drives the test logic for all
devices on boundary-scan
chain.
Connect to system TCK
pin.
TMS
Test Mode Select – this
signal is decoded by the
TAP controller to control
test operations.
Connect to system TMS
pin.
CLKI
Not used.
Unconnected.
CLKO
Not used.
Unconnected.
CCLK
Not used.
Unconnected.
D/P
Not used.
Unconnected.
DIN
Not used.
Unconnected.
PROG
Not used.
Unconnected.
INIT
Not used.
Unconnected.
RST
Not used.
Unconnected.
RT
Not used.
Unconnected.
TRIG
Not used.
Unconnected.
Table 1-5 XChecker Cable Pin Connections for CPLDs
Name
Function
Connections