Hi,
My customer have a question about signal traces of DP83822.
In DP83822 datasheet page.99 "11.1.1 Signal Traces", it said as follow:
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Unless mentioned otherwise, all signal traces should be 50-Ω single-ended impedance.
Differential traces should be 50-Ω single-ended and 100-Ω differential.
Take care to ensure impedance is controlled throughout.
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Which signal requires 50ohm impedance control?
If using MII mode, only following signal impedance need to be controlled?
Or all signal expect TD_P/M, RD_P/M, power need to be controlled?
-TX_CLK
-TX_D[3:0]
-TX_EN
-CRS
-COL
-RX_DV
-RX_D[3:0]
-RX_ER
-RX_CLK
best regards,
g.f.
