SNLS647G december 2019 – july 2023 DP83826E , DP83826I
PRODUCTION DATA
Far-End (Reverse) loopback is a special test mode to allow PHY testing with a link partner. In this mode, data that is received from the Link Partner passes through the PHY’s receiver, is looped back at the MAC interface and then transmitted back to the Link Partner. While in reverse loopback mode, all data signals that come from the MAC are ignored.
Reverse Loopback is enabled by setting bit[4] in the BISCR.