General Routing Guidelines
NVIDIA Jetson TX2 NX DG-10141-001_v1.1 | 74
15.6 Common High-Speed Interface
Requirements
Table 15-2 provides the common high-speed interface requirements.
Table 15-2. Common High-Speed Interface Requirements
Parameter Requirement Units Notes
Common-mode Choke (Not recommended – only used if absolutely required for EMI issues)
Preferred device Type: TDK ACM2012D-900-2P. Only if needed.
Place near connector. See Figure 15-2
Location - Max distance from to adjacent discontinuities
– ex, connector, AC cap)
8 (53) mm (ps) TDK ACM2012D-900-2P
See Figure 15-2
@T
R-200ps (10%-90%)
Common-mode impedance @ 100MHz Min/Max 65/90 Ω
Max Rdc 0.3 Ω
Differential TDR impedance 90 Ω
Min Sdd21 @ 2.5GHz 2.22 dB
Max Scc21 @ 2.5GHz 19.2 dB
Min bend angle 135 deg (α) S1 must be taken care in order to consider Xtalk
to adjacent pair. See Figure 15-3
Dimension Min A Spacing
Min B, C Length
Min Jog Width
4x
1.5x
3x
Trace
width
General
Routing over Voids Routing over voids not allowed except void around device ball/pin the signal is
routed to.
Noise Coupling Keep critical high-speed traces away from other signal traces or unrelated
power traces/areas or power supply components