My current carrier board is designed to support the commercial Jetson Orin AGX module only, with no connections at J62 and L53. To support the industrial Orin module, the current design guide requires J62 to be pulled down to ground and L53 to be pulled up to 3.3V. If I permanently pull J62 down and L53 up, can I run either the industrial or the commercial module on my carrier board? The board will need to support both modules and in my use case it is highly desirable not to have to remove 0-ohm resistors to support the commercial module.
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To support both the commercial Jetson Orin AGX module and the industrial Jetson Orin AGX module on your carrier board, you need to consider the differences in their requirements.
The industrial Jetson Orin AGX module requires J62 to be pulled down to ground and L53 to be pulled up to 3.3V. If you permanently pull J62 down and L53 up on your carrier board, you can support the industrial module.
However, for the commercial Jetson Orin AGX module, the current design guide does not specify any requirements for J62 and L53. This implies that the commercial module does not rely on these signals being pulled down or up.
Since you want to support both modules on your carrier board without having to remove 0-ohm resistors, permanently pulling J62 down and L53 up should not cause any issues for the commercial module. The commercial module will simply ignore these signals, and the board will still function correctly.
Therefore, yes, you can run either the industrial or the commercial module on your carrier board if you permanently pull J62 down and L53 up. This design change will allow your board to support both modules without requiring any modifications or removal of 0-ohm resistors.
It’s worth noting that this solution assumes that the commercial module does not have any specific requirements for J62 and L53 that are not mentioned in the design guide. If there are any specific requirements for the commercial module that are not met by permanently pulling J62 down and L53 up, this solution may not work.
In summary, based on the information provided, permanently pulling J62 down and L53 up on your carrier board should allow you to support both the industrial and commercial Jetson Orin AGX modules without requiring any modifications or removal of 0-ohm resistors.
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You are correct that J62 should be pulled to ground for the industrial module, and it should be through a 0 ohm resistor. The L53 pin should have a 3.3V rail supplying it (SYS_VIN_SV), not a pull up to 3.3V. SYS_VIN_SV should be powered before SYS_VIN_MV and SYS_VIN_HV as shown in the power on sequence in Figure 5-2 of the Design Guide.
It is ok to have J62 grounded and L53 powered at 3.3V for the commercial module.