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DP83826I: DP83826 Integrated MAC Series Termination Resistor

Part Number: DP83826I
Other Parts Discussed in Thread: DP83826E

DP83826 have Integrated MAC Series Termination Resistor  for RX_D[3:0], RX_ER, RX_DV, RX_CLK, TX_CLK.

DP83826IRHBT.pdf

In the snla344a  Application Report : How and Why to Use the DP83826E for EtherCAT® Applications

0576.snla344a.pdf

all this signals have external serial resistoe 33.2 Ohm (R251,R256 ... R259) .

Are that correct and why ?

 Regards Alex.

0576.snla344a.pdf