Questions:llc_decoupled_network

[Stylewei]

Hello
I hope you are well
when we use the memory type as llc_decoupled_network, L3 caches is disable and not connect with other cache.But why distribute the router to L3 caches.
// NEXT_ID, PREV_ID, DONE, COUPLE_UP, COUPLE_DOWN, DISABLE, HAS_ROUTER
m_l3_cache[ii]->init(-1, -1, false, false, false, true, true);
Thank you very much for your reply.