Power on sequence is the same as guide, except that I use Charger_present instead of Power Button.
I kept the power chain so it powers up in the same sequence: 5V, 3.3V, 1.8V
1.8V PowerGood is the RESET_OUT# signal. Comes up 60ms after 1.8V is stable.
I have not used any of the TX1 strapping pins except the UART0_TXD (H12) and UART0_RTS (G11) and they are connected to the same IC as on the dev board, in the same way.
I think one important detail is that the micro-USB connection will enumerate and report descriptors, proving that a reasonable amount of SW is actually running.
The TX1 is fresh out of the package, bought in bulk. Does it need flashing before it will talk on the UART0?
Update: The OEM DG has that statement in the “Jetson TX1 Signal Terminations (Present on the module – shown for reference only)” section. It is not saying this should be added to the Carrier Board. The next section which is for the Carrier Board terminations does not have any terminations listed for this signal.