Chapter 7
Autorouting and Autoplacement
©
National Instruments Corporation
7-9
To perform a full autoroute, choose
Autoroute»Start/Resume
Autorouter
.
Ultiboard begins routing your board and displays its progress in the status
line. When the process is complete the results are displayed in the
Results
tab of the
Spreadsheet View
.
Interactivity
Ultiboard provides complete interactivity, letting you stop the routing
process as desired to manually place items and then continue autorouting
when ready.
To stop autorouting, select
Autoroute»Stop/Pause Autorouter
.
To restart, select
Autoroute»Start Autoplacement
.
Autorouting buses
The circuit shown below is used in this example. Bus 1 consists of the five
nets that connect the two ICs.
Note
To autoroute buses, the topology for the nets, as set in the
Net edit
dialog box, must
be set to either
Daisy chain
or
Star
and the nets must be part of a
Bus Group
(in the
Groups
tab of the
Net edit
dialog box). Refer to the
section of
Chapter 5,
Working with Traces and Copper
, for more information.