DS-FND-BSX-PC Xilinx Inc, DS-FND-BSX-PC Datasheet - Page 294

• Manufacturer Part Number: DS-FND-BSX-PC
• Description: FOUNDATION BASE SYS W/SYN EXPRES
• Manufacturer: Xilinx Inc
• Type: Foundation Systemr

Specifications of DS-FND-BSX-PC

• For Use With/related Products: Xilinx Programmable Logic Devices
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 122-1185

Foundation Series 2.1i User Guide
Table of Supported Constraints
B-22
BASE
BLKNM
BUFG
CLKDV_DIVIDE
COLLAPSE
COMPGRP
CONFIG**
DECODE
Attribute/Constraint
Table B-1 Timing Symbols and Their Default Values
The following table summarizes all supported constraints; it also
shows whether the constraint must be entered at the schematic level
or whether it can be specified in one or more of the valid constraint
file types (NCF, UCF, or PCF). For further explanation and examples
of each of the constraints, see the online Libraries Guide (Chapter 12,
“Attributes, Constraints, and Carry Logic”).
Certain constraints can only be defined at the design level, whereas
other constraints can be defined in the various configuration files.
The following table lists the constraints and their applicability to the
design, and the NCF, UCF, and PCF files.
The CE column indicates which constraints can be entered using the
Xilinx Constraints Editor, a GUI tool in the Xilinx Development
System. The Constraints Editor passes these constraints to the imple-
mentation tools through a UCF file.
A check mark ( ) indicates that the constraint applies to the item for
that column.
Table B-2 Constraint Applicability Table
io_o_I
io_o_pad
Symbol
Enabled
Enabled
Design
Default
IO output to input propagation delay
(Disabled for tristated IOBs.)
IO output to pad propagation delay
NCF
UCF
Description
Xilinx Development System
CE
PCF