Data Security; Feedback; Disconnecting; Modifying A Programmed Design File - Xilinx EZTag User Manual

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Introduction

Data Security

All programming operations can optionally select to enable "Data

Protection" or Data Security" or both.

When enabled, Data Security disables reading the programmed

contents of a device (the device's id and signature remain readable).

Data Protection allows only the reading of the programmed

data. The device contents cannot be altered.

When both Data Security and Data Protection are enabled,

the device can be neither read nor re-programmed.

When using the PC-based graphical user interface, alert boxes at the

end of operation execution provide immediate feedback as the

success or failure of the speciﬁed operation. Detailed information

regarding failure is located in the system log ﬁle, and is provided for

both the PC and workstation based tool.

Turn off the target system power before disconnecting the FastFLASH

BSCAN Download cable or the XChecker cable.

The ﬂow does not change for a modiﬁed programmed design ﬁle.

There are no shortcuts even with a minor change.

The Boundary Scan Description Language (BSDL) uses a subset of

VHDL to describe the boundary scan features of a component. One

BSDL ﬁle is required for each kind of boundary-scan device in the

system.

The BSDL ﬁles for FastFLASH devices are provided as part of the

product release. The user is responsible for providing BSDL ﬁles for

any non-FastFLASH parts used in the boundary-scan chain.

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Xilinx Development System

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