4. Commands
UniSite-xpi User Manual 4-17
• User Data Size—Specifies the hexadecimal size, in bytes, of the data
block to program into a device. Normally, this value is equal to the
device size or to a multiple of the device size for set programming.
Entering 0 sets the User Data Size to the device size. User Data Size
works with Total Set Size to determine the total amount of bytes to
program into a set of devices.
• Next Operation Begins At—This read-only parameter shows what
address in user memory contains the next data byte to be
programmed. This value is calculated from the Data Word Width,
Device Block Size, Memory Begin Address, device width, and next
set member parameters.
Note: Items with an * (asterisk) are visible on the screen only if the selected
device supports the feature.
* Program Security Fuse (Y,N)—Enables or disables the programming
of the security fuse. To program the security fuse, set this parameter
to Y. This parameter defaults to N, which disables programming of
the security fuse.
* Program Signature—Available on only a few devices, the program
signature is a user-definable field that allows the user to program
data into the program signature array.
* Software Data Protection (Y,N)—When enabled, prevents writing to
a device.
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