Altera DDR Timing Wizard - Manual (Page 64)

3–4 Altera Corporation
DDR Timing Wizard User Guide November 2007
Introduction
-after_iptb <value> import Instructs the script to analyze and
elaborate the design and import the
design settings into DTW. Use this
switch after making changes in the
PLL or memory controller
MegaWizard. You must create a
memory controller using the
MegaWizard to use this switch. The
default value for this switch is none,
which means that the script does not
import any settings. No
import_and_compile Allows the script to compile the design,
extract the timing margins, and
recommend ideal clock cycles and
phase shift settings after performing
the import part of the script (see
above). No
-auto_adjust_cycles None Allows the script to adjust the clock
cycles if the current absolute timing
margin is bigger than one clock period.
This is to set the design properly so
that the margin shown is accurate and
realistic. You have to add this switch if
you want the script to adjust the clock
cycles automatically. The correct clock
cycle will updated the .dwz file
automatically. No
-extract_tcos <value> ● yes
● no
● auto
● prompt
Indicates whether you want the script
to extract the design t
CO
s and import
them into DTW when the design t
CO
s
do not match what are currently in
DTW. The default setting is auto,
which compares the t
CO
s and imports
the design t
CO
s if they do not match the
current DTW information. You can
extract t
CO
s at every run (yes) or
ignore the t
CO
mismatch (no). When
the value is prompt, the script exits if
the design t
CO
s do not match the DTW
information. Extracting t
CO
s may take
a while if you have a big design.
No
-debug None Lists debug messages. No
Table 3–1. Switches in the dtw_timing_analysis.tcl Script (Part 2 of 4) Notes (1) , (2)
Switch Possible Value Description Required