Nc-Si General Routing Guidelines; Nc-Si Trace Length Guidelines; Table 12: Nc-Si Trace Length Guidelines; Figure 7: Topology For Nc-Si - Advantech SOM-5992 Design Manual

2.4.2 NC-SI General Routing Guidelines

NA

2.4.3 NC-SI Trace Length Guidelines

Figure 7 : Topology for NC-SI.
Table 12 : NC-SI Trace Length Guidelines
Parameter
Signal Group
Single End
Nominal Trace Space within LPC
Signal Group
Spacing to Other Signal Group
LA
LB
Max length of LA+LB
Length matching between single
ended signals
Length matching between clock
signals
Reference Plane
Via Usage
Notes:
1.H is height above reference plane.
Main Route Guidelines
NC-SI
50Ω ±10%
3H
3H
Please see the SOM-5992 Layout Checklist
Carrier Board Length
8.5" Single source
NA
NA
GND referencing preferred.
Try to minimize number of vias
４３
Notes