Xilinx CPLD Libraries Guide

About Design Elements
Attribute Type Allowed Values Default Description
IBUF_DELAY
_VALUE
IFD_DELAY
_VALUE
Binary 0 thru 12 0 Specifies the amount of
additional delay to add to
the non-registered path out of
the IOB
Binary AUTO, 0 thru 6 AUTO Specifies the amount of
additional delay to add to
the registered path within the
IOB
Note Consult the device user guide or databook for the allowed values and the default value.
For More Information
• See the appropriate CPLD User Guide.
• See the appropriate CPLD Data Sheets.
CPLD Libraries Guide
ISE 10.1 www.xilinx.com 415