DC and Switching Characteristics
DS610-3 (v2.0) July 16, 2007 www.xilinx.com 21
Product Specification
R
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Timing parameters and their representative values are
selected for inclusion below either because they are
important as general design requirements or they indicate
fundamental device performance characteristics. The
Spartan-3A DSP FPGA speed files (v1.29), part of th e
Xilinx Development Software, are the original source for
many but not all of the values. The speed grade
designations for these files are shown in Tab le 15 . For more
complete, more precise, and worst-case data, use the
values reported by the Xilinx static timing analyzer (TRACE
in the Xilinx development software) and back-annotated to
the simulation netlist.
Tabl e 1 6 provides the recent history of the Spartan-3A DSP
FPGA speed files.
Table 15:
Spartan-3A DSP v1.29 Speed Grade Designations
Device Preview Advance Preliminary Production
XC3SD1800A -4, -5
XC3SD3400A -4, -5
Table 16:
Spartan-3A DSP Speed File Version History
Version
ISE
Release Description
1.29 ISE 9.2.01i Production Speed Files for -4 and -5
speed grades
1.28 ISE 9.2i Minor updates
1.27 ISE 9.1.03i Advance Speed Files for -4 speed
grade