ZHCSJ67A December 2018 – August 2019 DP83825I
PRODUCTION DATA.
PCS Loopback occurs in the PCS layer of the PHY. No signal processing is performed when using PCS Loopback.
PCS Input Loopback is enabled by setting bit[0] in the BISCR.
PCS Output Loopback is enabled by setting bit[1] in the BISCR.