RY,
Yes, the will have to go through Bridge 2 and Bridge 3 respectively. These are 256:128b bridges w/ a 1:1 clocking between TeraNet3_C (which EDMA0 resides on) and TeraNet3_A (which AEMIF16 resides on.)
No, you cannot specify the bridges when configuring an EDMA TC. Instead you'd choose which EDMA TC you'd want to use. Typically for AEMIF16 accesses, you'd probably use EDMAn where n is 1, 2 or 3 (not 0 or 4.)
Best Regards,
Chad