Is there any reason that I can't swap the Tx/Rx side of an ethernet
transformer to make layout easier,
according to the schematics they appear identical.
dan...
Ethernet Phy
Started by ●October 7, 2006
Reply by ●October 8, 20062006-10-08
On Oct 7, 2006, at 7:59 PM, Dan Allen wrote:
> Is there any reason that I can't swap the Tx/Rx side of an ethernet
> transformer to make layout easier,
> according to the schematics they appear identical.
My initial guess would be yes, because there are chips that do auto
MDI/MDX switching (i.e., can detect whether it's connected to a hub
or node, and swap TX and RX internally if necessary). The only way a
MAC could work like that would be for the transformer to be
electrically identical for the TX and RX pairs.
--
Tom Collins - t...@tomlogic.com
Certified Rabbit Semiconductor Consultant based in Napa, California
> Is there any reason that I can't swap the Tx/Rx side of an ethernet
> transformer to make layout easier,
> according to the schematics they appear identical.
My initial guess would be yes, because there are chips that do auto
MDI/MDX switching (i.e., can detect whether it's connected to a hub
or node, and swap TX and RX internally if necessary). The only way a
MAC could work like that would be for the transformer to be
electrically identical for the TX and RX pairs.
--
Tom Collins - t...@tomlogic.com
Certified Rabbit Semiconductor Consultant based in Napa, California
