newbie101
Member level 2
Hi All,
Attached is an example of a recommended interface circuit for Ethernet integrated into a Microcontroller.
a) May I know the purpose of the center tap in the transformer? Since TXP & TXN are diff pairs, wouldn't a non center tapped transformer be sufficient?
b) Is it ok to put the choke on the uC side of the transformer?
uC <--> choke <--> transformer <--> RJ-45
c) Please explain the 75ohm termination on the secondary side.
Thanks,
Newbie101
Attached is an example of a recommended interface circuit for Ethernet integrated into a Microcontroller.
a) May I know the purpose of the center tap in the transformer? Since TXP & TXN are diff pairs, wouldn't a non center tapped transformer be sufficient?
b) Is it ok to put the choke on the uC side of the transformer?
uC <--> choke <--> transformer <--> RJ-45
c) Please explain the 75ohm termination on the secondary side.
Thanks,
Newbie101