Forum Discussion

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

Interfacing STRATIX 3 FPGA with RS485 and RS232.

Hello sir, I am designing a hardware multipurpose board using STRATIX 3 FPGA(EP3SL340F1517C3N). I have never worked on Fpga practically. So kindly let me know how to interface this Fpga with...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Thanks for your reply sir. I have the idea of using MAX485 IC in order to connect RS485 to FPGA. Is it necessary to short the ~RE(Receiver Output Enable) and DE(Driver Output Enable) and connect a resistor to enable the MAX485? Along with Tx,Rx pins will i have to connect RE and DE pins to FPGA? Also I'm concerned about the voltage levels. Will I have to use a level converter in between MAX485 and FPGA? Can you please help me out with this?