126.96.36.199. Internal Serial Loopback Path
The transmitter buffer sends data normally, but internal serial loopback takes the data before the buffer.
It is implemented completely on-chip and does not require any connector on the serial path. This loopback path is enabled independently of the TX buffer enablement.
The E-tile transceiver channel also supports external connectivity where you have to connect the TX differential outputs to the RX differential inputs. This external connection must consist of a transmission path with 100 Ω differential mode impedance. Mission mode is a form of external connection where the data source is something other than the E-tile transmitter. For example, a BERT or other device's TX is providing data to the E-tile receiver.
For more details on Register Read/Write support and programming, refer to PMA Register Map and PMA Attribute Codes to configure these parameters.
Did you find the information on this page useful?