91
2.10.3 LPC Trace Length Guidelines
Figure 27
: Topology for LPC
Table 31
: LPC Trace Length Guidelines
Parameter
Main Route Guidelines
Notes
Signal Group
LPC
Single End
50~55Ω ±10%
Nominal Trace Space within LPC
Signal Group
Min. 15mils
Spacing to Other Signal Group
Min. 15mils
LA
Please see the SOM-5992 Layout Checklist
LB
Carrier Board Length
Max length of LA+LB
23”
Length matching between single
ended signals
Max. 250mils
Length matching between clock
signals
Max. 250mils
Reference Plane
GND referencing preferred.
Via Usage
Try to minimize number of vias
Notes: