Does the N10 have a dedicated seperate console for the NPU

UART2_TXD and UART2_RXD are connected to the debug console for the u-boot, then the kernel. Where can I see the debug log for the NPU?

Yes. There is one serial console connector on ROCK Pi N10 for NPU. Please see the picture of ROCK Pi N10. https://wiki.radxa.com/RockpiN10/hardware/rockpiN10