Redriver Topology
R2026bA redriver is a type of repeater where the input signal is equalized (commonly boosted or filtered) and forwarded to a downstream channel and receiver. It sits between two channels and re-conditions the signal without recovering the clock. The redriver can be an optical redriver or electrical redriver. Both types occupy the same architectural slot in a SerDes system. But in case of optical redrivers, the internal signal path passes through the optical domain.
The redriver is modeled as a back-to-back receiver-transmitter pair.
Reverse the transmitter (Tx) and receiver (Rx) subsystems from their traditional ordering after you export the Simulink® model from the SerDes Designer app. Add additional Analog Channel and AMI blocks as shown here. The Rx and Tx receive a signal from the upstream model and processes it through first the Rx and then the Tx. Each subsystem runs its own statistical and time-domain analyses independently.
Currently, SerDes Toolbox™ supports the IBIS-AMI specification's redriver workflow. Specifically for
statistical simulation, it follows the Upstream flow as shown here:
You can extend the topology to multiple redrivers using additional Analog Channel and AMI blocks but the model can only contain one Rx-Tx pair.
