DP83867IS: 100 Base-TX mode TX and RX pins

Kevin Parmenter

Part Number: DP83867IS

When using 100 Base-TX mode only, a previous thread stated that pins 1/2/4/5 can be used. Which two pins are the TX and which two pins are the RX? Thanks in advance.

over 4 years ago

0 Lysny Woodahl over 4 years ago

TI__Expert 3595 points

Hi Kevin,

Like stated in the datasheet, the pins can function for TX signals and RX signals.

Thanks,

Lysny

0 Kevin Parmenter over 4 years ago

Prodigy 100 points

I cannot find in the datasheet which signals are TX and which are RX for 100 BASE-TX mode. The datasheet only shows the 1000M pairs A/B/C/D which are bidirectional. Please let me know which section discusses the 100M mode.

0 Lysny Woodahl over 4 years ago in reply to Kevin Parmenter

TI__Expert 3595 points

Hi Kevin,

For 100M pair A functions as transmit and pair B functions as receive as a default. But if using auto-mdix, each pair can function as either RX or TX.

Thanks,

Lysny

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DP83867IS: 100 Base-TX mode TX and RX pins