Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

same wire to 2 bidir io pins

Hi, I have a bidir pin ( MDIO) it is connected to a wire and then the wire connects to inside the sub modules. How can I make this wire connect to another bidir pin? If I try quartus...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

--- Quote Start ---

Now I want another Bidir pin on FPGA which is a copy of EXT_MDIO Bidir pin. can I do that?

--- Quote End ---

Referring to post# 3, think in "hardware".

You have two input signals from two bidir pins. You can route them to one internal bidir signal, if you have a select signal that controls a 2:1 MUX between external and internal input ports. In addition, the internal output enable signal for the bidir port must be accessible.