Nvidia Jetson TX2 Manual page 42

7.2.1 EDP/DP
Figure 24: eDP / DP Connection Example
Jetson TX2/TX2i
Tegra
DP_AUX_CHx_P
EDP
DP_AUX_CHx_N
DP_AUX_CHx_HPD
HDMI_DPx_TXDP0
DP[1:0]
HDMI_DPx_TXDN0
HDMI_DPx_TXDP1
HDMI_DPx_TXDN1
HDMI_DPx_TXDP2
HDMI_DPx_TXDN2
HDMI_DPx_TXDP3
HDMI_DPx_TXDN3
1. A Lev el shifter is required on HPD to av oid the pin from being driv en when the module is off. The lev el shifter must be non-
Note:
inv erting (preserv e the polarity of the HPD signal from the display ).
2. Pull-up/down only required for DP – not for eDP.
3. If EMI dev ices are necessary , they must be tuned to minimize the impact to signal quality , which must meet the timing &
electrical requirements of the Display Port specification for the modes to be supported. Any ESD solution must also maintain
signal integrity & meet the Display Port requirements for the modes to be supported.
eDP Routing Guidelines
Figure 25: eDP / DP (Differential Main Link) Topology
Jetson TX2/TX2i
Tegra
P
DP
Pkg
Driver
N
Table 40. eDP / DP Main Link Signal Routing Requirements (Including DP_AUX)
Parameter
Specification
Max Data Rate / Min UI
Number of Loads / Topology
Termination
Electrical Spec
Insertion Loss
Resonance dip frequency
TDR dip
FEXT
JETSON TX2/TX2i OEM PRODUCT | DESIGN GUIDE | 20180618
DPx_AUX_CH+
DPx_AUX_CH–
DPx_HPD
DPx_TX2
DPx_TX2
DPx_TX1
DPx_TX1
DPx_TX0
DPx_TX0
DPx_TX3
DPx_TX3
Common Mode
Chokes & ESD
Requirement
HBR2 5.4 / 185
HBR 2.7 / 370
RBR 1.62 / 617
1
100
E-HBR @ 0.675GHz <=0.7
PBR 0.68GHz <=0.7
HBR 1.35GHz <=1.2
HBR2 @ 2.7GHz <=2.4
>8
>85
@ DC <= -40dB
@ 2.7GHz <= -30dB
DP0/DP1
0.1uF
B3 5/A35
0.1uF
B3 4/A34
See Note 1
Level Shifter 1kΩ
B3 6/A33
0.1uF
G37/D37
0.1uF
G36/D36
0.1uF
F38/C3 8
0.1uF
F37/C3 7
0.1uF
H39/E3 9
0.1uF
H38/E3 8
0.1uF
H36/E3 6
0.1uF
H35/E3 5
eDP
Conn
Units
Gbps / ps
load
Ω
dB
dB
dB
dB
GHz
Ω
IL/FEXT plot – up to HBR2
NVIDIA Jetson TX2/TX2i OEM Product Design Guide
See Note 2
eDP / DP Connector
3.3V
+3.3V
0.1uF 10uF
AUX+
AUX–
EMI/
100kΩ
ESD
HPD
LN2+
LN2–
LN1+
LN1–
EMI/ESD
LN0+
LN0–
LN3+
LN3–
Notes
Per data lane
Point-Point, Differential, Unidirectional
On die at TX/RX
@ Tr-200ps (10%-90%)
2-lane 4-lane
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