EPC "External peripheral controller" connect DATA BUS by bidirectional bus

Question

Hello, I want to connect to the AXI bus external device, using "External peripheral controller" . In the Datasheet it is written as to connect the address bus, data bus, etc.. I need to connect the data bus as bi-directional, but in the controller there is no signal to the bidirectional bus, but only separately.
How can I connect my controller to the data bus was bidirectional?

drozwood90 · Accepted Answer

Hi there,

You can probably just use the the prh_wr_n signal. If that does not work with the setup/hold of your device, you will need to generate the logic you need.

See Figure 1-4 of the axi-epc documentation:
http://www.xilinx.com/support/documentation/ip_documentation/axi_epc/v2_0/pg127-axi-epc.pdf

Notice in that figure there is "external glue logic".

--Dan