Common High-Speed Interface Requirements; Figure 17-2. Common Mode Choke; Table 17-2. Common High-Speed Interface Requirements - Nvidia Jetson Orin NX Design Manual

17.5 Common High-Speed Interface
Requirements
The following table describes the common high-speed interface requirements.
Table 17-2.

Common High-Speed Interface Requirements

Parameter
Common-mode Choke (Not recommended – only used if absolutely required for EMI issues)
Preferred device
Location - Max distance from to adjacent
discontinuities – ex, connector, AC cap)
Common-mode impedance @ 100MHz Min/Max
Max Rdc
Differential TDR impedance
Min Sdd21 @ 2.5GHz
Max Scc21 @ 2.5GHz
Serpentine
Min bend angle
Dimension
General
Routing over Voids
Noise Coupling
The following figures show the common high-speed interface signal routing requirements.
Figure 17-2. Common Mode Choke
PRELIMINARY INFORMATION
NVIDIA Jetson Orin NX
Requirement
8 (53)
65/90
0.3
90
2.22
19.2
135
Min A Spacing 4x
Min B, C Length 1.5x
Min Jog Width 3x
Routing over voids not allowed except void around device ball/pin the signal
is routed to.
Keep critical high-speed traces away from other signal traces or unrelated
power traces and areas or power supply components
General Routing Guidelines
Units Notes
Type: TDK ACM2012D-900-2P. Only if
needed. Place near connector. Refer to
Common Mode Choke Requirement
section.
mm (ps) TDK ACM2012D-900-2P
See Figure 17-2
Ω
Ω
@T -200ps (10%-90%)
R
Ω
dB
dB
deg (α) S1 must be taken care in order to
consider Xtalk to adjacent pair. See
Trace width
USB 3.2 Guideline in Figure 17-3.
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