design considerations for ethernet-spi controller pcb layout

Recently I have designed board on which Ethernet and gsm module need to be placed. Already I have exported Ethernet related chip to pcb and arranged in this order s shown in below image enter image description here

This is how I placed U10 (Ethernet-spi controller), U9(magnetics) ,J2 (RJ45).Whether this placement is correct?? This complete board is consists 4layers. Mid-Layer 1 will be power plane. Mid- Layer 2 will be ground plane.

One more GSM module need to be placed yet, where I don't have enough place on top layer except on below layer ...

My question is.... 1.Shall I place gsm below this Ethernet setup..?

2.what are the pros & cons if I place in this Passion.

Is there any other option to place?

by shivakumarnkd
December 03, 2020

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