Specifications

258 Chapter —
 The delay from this step to the next step. This is redundant
information, since it can be derived from the times in the first column.
It is provided for compatibility with TestPanel and for improved
flexibility in exporting to outside software systems.
NOTE: 1) If the delay and time columns do not match, the longest time is used.
2) The delay on the last line has special significance because it indicates
the delay from the last signal change to the end of the selected interval.
When pasting, this value is used to determine how much time to insert.
The following items on a line will be signal or group values matching the
items in the header.
 Individual signals not in Don’t Know or High Impedance states will be
either 0 or 1.
 Grouped signals which are not all unknown or all high impedance will
be specified by a hexadecimal value. The least significant bit of the
value corresponds to the rightmost signal in the group list. The special
character “X” may be substituted for a hex digit if any one of the four
signals represented by that digit is unknown, or “Z” if all the signals
represented by that digit were high impedance.
Timing Text Example
The following is an example of Timing text data and its corresponding
Timing window.
$T $D $I Q[Q0 Q1 Q2 Q3] $I SI $I LD $I CLK
87410 2 F 1 0 0
87412 10 F 1 0 1
87422 10 F 0 0 0
87432 1 F 0 0 1
87433 9 E 0 0 1
LW Reference.bk Page 258 Monday, December 15, 2003 5:59 PM