NetBurner Community Forum

Hello,
does anybody know, how to connect the J3 connector (10pin) to the ethernet jack? Im not sure with those LED outputs. Can I power them (20mA each one LED) directly by the 2.5V voltage output form the MOD5234 (pin 3 and 6)?
How should I connect the LEDs?
1) pin 3 -> resistor -> LED anode -> LED cathode -> pin 9 (resp. pin 10)
2) pin 9 (resp. pin 10) -> resistor -> LED anode -> LED cathode -> ground
3) PWR (e.g. 3.3V) -> resistor -> LED anode -> LED cathode -> pin 9 (resp. pin 10)

Or any total different solution? I wasn't able to decode it from the datasheet...

Thank you very much!
Jan Mrazek

There is no need to put in a resistor, there is already 220 ohm resistors between pins 9, 10 and the Ethernet PHY. You should connect pin3 to the anode and then Pin9(resp. pin 10) to the cathode.

Thank You very much!

Jan Mrazek

Hello,
as I think about that - is there any need to place some filter resistors and capacitors into the circuit, or is it prepared on the MOD5234. I mean e.g. 24R4 resistors in RX paths or 49R9 from TX to 2.5V and 10nF + 24R9 from RX to the 2.5V voltage... Or the only thing to do is to place the Ethernet jack with magnetics?

Jan Mrazek