Offset OUT Constraint Examples, Offset OUT Header

Chapter 12: TRACE

Clock Path: rclk_in to ffl_reg
Location	Delay type	Delay(ns)	Logical Resource(s)
-------------------------------------------------			-------------------
A8.I	Tiopi	0.825	rclk_in
			read_ibufg
CM_X1Y1.CLKIN	net (fanout=1)	0.798	rclk_ibufg
CM_X1Y1.CLK90	Tdcmino	-4.290	read_dcm
UFGMUX5P.I0	net (fanout=1)	0.852	rclk_90_dcm
BUFGMUX5P.O	Tgi0o	0.589	read90_bufg
4.OTCLK1	net (fanout=2)	0.593	rclk_90
------------------------------------------------			--------------------
Total -0.633ns (-2.876ns logic, 2.243ns route)

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OFFSET OUT Constraint Examples

The following section describe specific examples of an OFFSET OUT constraint, as shown in the Timing Constraints section of a timing report. For clarification, the OFFSET OUT constraint information is divided into the following parts:

•OFFSET OUT Header

•OFFSET OUT Path Details

•OFFSET OUT Detail Clock Path

•OFFSET OUT Detail Path Data

OFFSET OUT Header

The header includes the constraint, the number of items analyzed, and number of timing errors detected. See the PERIOD Header for more information on items analyzed and timing errors.

Example:

====================================================================

Timing constraint: OFFSET = OUT 10 nS AFTER COMP "rclk_in" ;

50 items analyzed, 0 timing errors detected.

Minimum allowable offset is 9.835ns.

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Development System Reference Guide

8.2i specifications

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Xilinx 8.2i manual Offset OUT Constraint Examples, Offset OUT Header

Models: 8.2i

Chapter 12: TRACE

OFFSET OUT Constraint Examples

OFFSET OUT Header

Development System Reference Guide

8.2i specifications