Spi Routing Guidelines; Spi Trace Length Guidelines; Table 34: Spi Trace Length Guidelines; Figure 30: Topology For Spi - Advantech SOM-5992 Design Manual

2.11.3 SPI Routing Guidelines

NA

2.11.4 SPI Trace Length Guidelines

Figure 30 : Topology for SPI
Table 34 : SPI Trace Length Guidelines
Parameter
Signal Group
Single End
Nominal Trace Space within SPI
Signal Group
Spacing to Other Signal Group
LA
LB
Max length of LA+LB
SPI CLOCK to MOSI and CLOCK
to SPI_CS Maximum Pin to Pin
Length Mismatch
Via Usage
Notes:
Main Route Guidelines
SPI
50Ω ±10%
Min. 10mils
Min. 10mils
Please see the SOM-5992 Layout Checklist
Carrier Board Length
6.5"
Max. 500mils
Try to minimize number of vias
９９
Notes