Nvidia DRIVE AGX Orin - Page 21

Interface Connectors
NVIDIA CONFIDENTIAL | SUBJECT TO CHANGE
NVIDIA DRIVE AGX Orin Developer Kit Mechanical and Installation Guide DI-10587-003_v02 | 16
Pin
Signal Name
Description
Note
56
ORIN_3V3_LIMITED
3.3V power output with current limit
5
57
GND
Ground
58
RSVD
Reserved
59
RSVD
Reserved
60
ORIN_3V3_UART7_RX
UART pin connected to Orin GP102_UART7_RX
4
61
ORIN_3V3_UART7_TX
UART pin connected to Orin GP101_UART7_TX
4
62
GND
Ground
63
GND
Ground
64
ORIN_UART5_RX
UART pin connected to Orin GP42_UART5_RXD
4
65
GND
Ground
66
ORIN_UART5_CTS*
UART pin connected to Orin GP44_UART5_CTS_N
4
67
ORIN_UART5_RTS*
UART pin connected to Orin GP43_UART5_RTS_N_DDRCODE0
4
68
ORIN_UART5_TX
UART pin connected to Orin GP41_UART5_TXD_DDRCODE1
4
Notes:
1. Orin SPI3 is connected to an ultrasonic ASIC. An IO expander controlled by Orin I2C4 is used for scanning up to 12
ultrasonic sensors.
2. Fused ultrasonic power output from high-side switch enabled via IO expander controlled by Orin I2C4.
3. LIN power output from a high-side switch.
4. Orin 1.8V balls are level-shifted to 3.3V.
5. This pin, combined with H1 pin-56, supports up to 40mA of 3.3V current when Orin is powered.
A cable harness is built for the developer system using two the mating connector, HDRA-
E68MA1+. The other end of the cable harness breaks out signals to several female DB9
connectors, P1~P9 and P11~P21. The breakout information of these DB9 connectors is shown
in the tables below. The DB9 connector pinouts is shown in Figure 2-3.
Note:
The CAN bus topology is a bus line with two ends and multiple nodes connected to it in between. The CAN
High" and "CAN Low" wires. If the CAN port is connected to the middle node, no termination is required.
Therefore, a istors are required for a single CAN bus,
termination resistor is required for the CAN DB9 connectors (P3, P4, P11~P14) if the CAN node is
connected to either end of a CAN bus. However, due to the internal termination, the ORIN_FSICAN1 on
DB9 connector P15 is limited to be connected to the end node of a CAN bus.
Note:
The FlexRay bus topology is also a bus line with two ends and multiple nodes connected to it in between.
Different from the CAN bus termination, the FlexRay termination is required at all nodes regardless of
the node location. However, the termination at both bus ends should match the cable impedance at
around while the termination at the middle nodes can be much weaker. The preferred
FlexRay termination is split termination. When split termination is used at the end node, two resistors
should be used.
The developer system has only one FlexRay port (SMCU_FLEXRAY1) with internal weak split
termination, assuming that it is connected to the middle node of a FlexRay bus.