• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 1632 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DP83TD510E: Using the differential Tx+, Tx-, Rx+ and Rx- pins with two pairs instead of single pair

A K
Prodigy 10 points
Part Number: DP83TD510E


Hi,

I have a question concerning the use of the differential transmit and receive pair signals.

According to the pin layout, there are four pins for the transmit and receive signals, i.e. Tx+, Tx-, Rx+ and Rx-.

So far, in order to be compatible with single-pair cables, I have only seen that these signals are reduced to a single pair, namely TRD_P and TRD_N using the termination circuits, e.g. as shown in the application section of the datasheet.

However, is it possible to use Tx+, Tx-, Rx+ and Rx- directly in a two-pair configuration, as shown in the figure below, with the according termination and component values?

And would this also allow full-duplex data transfer at 10 Mbit/s? I.e. would the transceiver work with a 10BASE-T PHY?

Also, should GPIO2/STRAP10 then also be pulled down, since a 50 Ohm termination is being used in this configuration?

Thank you in advance for your response!