60
2.5.4.2 10GB LAN Sideban Guidelines
Table 17
: 10GB LAN Sideban Trace Length Guidelines
Parameter
Main Route Guidelines
Notes
Signal Group
SDP/ MDIO& MDC/LED
Single End
50Ω ±10%
Nominal Trace Space within CRT
DAC Signal Group
Min. --10mils
Spacing to Other Signal Group
Min. --10mils
LA
Please reference SOM-5992 Layout check list
LB
Carrier Board Length
Max length of LA+LB
8”
Length matching
1.
Match the trace lengths within MDIO & MDC to ±250
mils.
Reference Plane
GND referencing preferred.
Min 20-mil trace edge-to-major plane edge spacing.
Содержание SOM-5992
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