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Parameter
Trace at Component Region
Value
Location
Trace entering the SMT pad
Trace between components
HDMI connector
Connector voiding
General: See Chapter 15 for guidelines related to Serpentine routing, routing over voids and noise coupling
Notes:
1. Longer trace lengths may be possible if the total trace loss is equal to or better than the target. If the loss is greater, the max
trace lengths will need to be reduced.
2. The average of the differential signals is used for length matching.
3. Do not perform length matching within breakout region. Recommend doing trace length matching to <1ps before vias or any
discontinuity to minimize common mode conversion.
4. If routing includes a flex or 2nd PCB, the max trace delay and skew calculations must include all the PCBs/flex routing.
Solutions with flex/2nd PCB may not achieve maximum frequency operation.
The following figures show the HDMI interface signal routing requirements.
Figure 7-9.
IL and FEXT Plot
Figure 7-10.
TDR Plot
NVIDIA Jetson TX2 NX
Requirement
Units
100
At component region (Microstrip)
One 45°
Uncoupled structure
Voiding the ground below the signal lanes
0.1448(5.7mil) larger than the pin itself
Notes
Ω
± 10%
See Figure 7-18
See Figure 7-19
See Figure 7-20
DG-10141-001_v1.1 | 42
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