Manual and Autorouting

Manual Routing

Route the following types of nets first:

• Most difficult
• Most complex
• Tight fitting nets first
• Very high current (primarily external)
• Very high voltage (primarily internal)
• Sensitive
• Noisy
• Separate analog and digital.
• Route busses.

Auto Routing

• Manually route those items shown in "manual routing" first, if necessary.
• Define attributes that are common only to the auto router.
• Define/select "Routine," "Do" file, "Route" file, or "Strategy" file.

After route completion:

• Manually clean up paths.
• Miter right angle corners.
• Run DRC/design rules to ensure clearances are met.
• Check annular ring.
• Change gates or parts.