Xilinx 8.2i manual Ing score in parenthesis

Models: 8.2i

1 422
Download 422 pages 26.35 Kb
Page 176
Image 176

Chapter 9: PAR

R

Phase 12.5

Phase 12.5 (Checksum:7270df4) REAL time: 47 secs

Writing design to file c:\test\par0.ncd

Total REAL time to Placer completion: 47 secs

Total CPU time to Placer completion: 8 secs

The router portion of the PAR report shows that the router has been invoked. It displays each phase of the router and reports the number of unrouted nets, in addition to an approximate tim-

ing score in parenthesis.

 

 

 

 

 

Starting

Router

 

 

 

 

 

Phase 1:

231 unrouted;

REAL time: 51

secs

 

Phase 2:

154 unrouted;

REAL time: 51

secs

 

Phase 3:

21

unrouted;

REAL time: 51

secs

 

Phase 4:

21

unrouted; (347)

REAL time: 51

secs

Phase 5:

21

unrouted; (0)

REAL time:

51

secs

Phase 6:

21

unrouted; (0)

REAL time:

51

secs

Phase 7: 0 unrouted; (0)

REAL time:

51 secs

Total

REAL time to Router completion: 51

secs

Total

CPU time to Router

completion: 10 secs

Generating "par" statistics.

The next portion of the PAR report contains the Clock Report, which includes a clock table that

lists all clocks in the design and provides information on the routing resources, number of

fanout, maximum net skew for each clock, and maximum delay. The Locked column in the clock

table means the clock driver (BUFGMUX) is assigned to a particular site instead of left floating.

Note: The clock skew and delay listed in this table differ from the skew and delay reported in

TRACE, or Timing Analyzer. PAR takes into account the net that drives the clock pins whereas

TRACE and Timing Analyzer include the entire clock path.

176

www.xilinx.com

Development System Reference Guide

Page 176
Image 176
Xilinx 8.2i manual Ing score in parenthesis