SNLS579A April 2018 – November 2018 DP83TC811S-Q1
Reverse Loopback receives data on the MDI and passes it through the entire receive block where it is then looped back within the PCS layer to the transmit block. The data is transmitted back out on the MDI to the attached Link Partner. To avoid contention, MAC transmit path is isolated.
Reverse Loopback is enable by setting bits[6:2] = 0b0100 in the BISTCR register.