Troubleshooting Guide; Communication - Xilinx EZTag User Manual

Troubleshooting Guide

This section is a simple guide to understanding the more common
issues you might encounter when configuring EPLDs with EZTag.
These issues are likely to fall into three groups; communication,
improper connections, and improper or unstable V

Communication

Observing the following guidelines should minimize the
communication difficulties that can occur between the XChecker
hardware and the target system.
Do not attach extension cables to the target system side of the
XChecker cable; this can compromise configuration data integrity
and cause checksum errors.
Attach the XChecker cable configuration leads firmly to the target
system.
After connecting the target system, specify the chain configuration
using the "part" command. Then use the "partinfo -id
part_name" command to read the IDCODE from each part in the
system. This will verify the integrity of the boundary-scan chain.
Use the verify feature to assure integrity of the configuration data.
You can do this from the command line with the –v option or in the
interactive mode by specifying the verify command.
EZTag User Guide
Communication
This section describes several issues that involve the integrity of
the bitstream that EZTag transmits to the target EPLDs, and the
correct connection of the boundary-scan chain.
Improper Connections
This section involves assigning configuration pins to invalid
signals or voltage levels.
Improper or Unstable V
This section describes several causes of incorrect configuration
sequences and incorrect responses from the target system.
EZTag with Workstations
CC
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CC
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