While the AGX does have MMUs and TLBs, unified memory and TLBs are orthogonal. For instance the Raspberry Pi's SoC has unified memory, but no MMU/TLB on the GP

While the AGX does have MMUs and TLBs, unified memory and TLBs are orthogonal. For instance the Raspberry Pi's SoC has unified memory, but no MMU/TLB on the GPU. That IP block can only access physical memory.