Wiznet550se2 TX and RX route Impedance

S2E Module WIZ550 Series
1

Hello,

I can’t find any impedance information for nodes; TX_N, TX_P, TX1_P, TX1_N and RX_N, RX_P, RX1_P, RX1_N in wiznet550se2 reference schematic design. wiz550s2e reference schematic

Could you please provide me a proper impedance spec for these tracks if there is one?

Thank you in advance,

Nurettin

2

Hi

What impedance information do you want?

The line must consist of 50R lines.
And because it is a differencial signal, the trace must match.
The circuit diagram includes an impedance matching circuit. (Circuit below)

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Let the trace between W5500 and magnetic as short as possible, and keep the TX +/- (same as RX +/-) signal traces to be symmetry. The traces should not be too long and 12cm will be the maximum length of the path.

Thank you.