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266 www.xilinx.com Development System Reference Guide
Chapter 14: BitGen
R
DriveDone
This option actively drives the DONE Pin high as opposed to using a pullup.
Encrypt
Encrypts the bitstream.
Note:
For more information on encryption, see the following web site:
http://www.xilinx.com/products
Gclkdel0, Gclkdel1, Gclkdel2, Gclkdel3
Use these options to add delays to the global clocks. Do not use these options unless instructed
to do so by Xilinx.
GSR_cycle
Selects the Startup phase that releases the internal set-reset to the latches, flip-flops, and
BRAM output latches. The Done setting releases GSR when the DoneIn signal is High.
DoneIn is either the value of the Done pin or a delayed version if DonePipe=Yes.
Keep should only be used when partial reconfiguration is going to be implemented. Keep
prevents the configuration state machine from asserting control signals that could cause
the loss of data.
Architectures: Virtex, Virtex-E, Virtex-II, Virtex-II Pro, Virtex-4,
Spartan-II, Spartan-IIE, Spartan-3, Spartan-3E
Settings: No, Yes
Default: No
Architectures: Virtex-II, Virtex-II Pro, Virtex-4,
Settings: No, Yes
Default: No
Architectures: Virtex/-E/, Spartan-II/-IIE
Settings: 11111, binary string
Default: 11111
Architectures: Virtex/-E, Spartan-II/-IIE
Settings: Done, 1, 2, 3, 4, 5, 6, Keep
Default: 6