HDMI Tuning Guide
PRELIMINARY INFORMATION
Jetson AGX Orin Series Tuning and Compliance Guide DA-11040-001_v0.7 | 34
Voltage Swing Target
This guide targets a differential voltage swing of 1000 mV.
The target can be lowered to help reduce EMI and RF related issues.
!
CAUTION: Note that if the user lowers the differential voltage swing target, the user assumes
complete responsibility for issues or consequences arising as a result. In addition, the user must
test random parts to ensure HDMI compliance with the new differential voltage settings.
Registers
The Serial Output Resource (SOR) module can be configured to support HDMI or DisplayPort
(DP) technology. The Orin module has one instance of the SOR module on the
HDMI_DP2 pins.
Table 15. Orin SOR Registers
Register Name Bit Fields Description Notes
NV_PDISP_SOR_LANE_DRIVE_CURRENT_0: Address 0x1380c118
LANE2_DP_LANE0 07:00 Drive Strength controls for Lane 2 Used to set
transmitter main
output drive level
for each of the four
lanes.
LANE1_DP_LANE1 15:08 Drive Strength controls for Lane 1
LANE0_DP_LANE2 23:16 Drive Strength controls for Lane 0
LANE3_DP_LANE3 31:24 Drive Strength controls for Clock
NV_PDISP_SOR_LANE_PREEMPHASIS_0: Address 0x1380c120
LANE2_DP_LANE0 07:00 Pre-Emphasis controls for Lane 2
LANE1_DP_LANE1 15:08 Pre-Emphasis controls for Lane 1
LANE0_DP_LANE2 23:16 Pre-Emphasis controls for Lane 0
LANE3_DP_LANE3 31:24 Pre-Emphasis controls for Clock
NV_PDISP_SOR_PRESHOOT 0: Address 0x1380c14c
LANE2_DP_LANE0 07:00 Preshoot controls for Lane 2
LANE1_DP_LANE1 15:08 Preshoot controls for Lane 1
LANE0_DP_LANE2 23:16 Preshoot controls for Lane 0
LANE3_DP_LANE3 31:24 Preshoot controls for Clock
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