The Cadence® 112Gbps Extended Long-Reach (ELR) SerDes IP for TSMC 7nm/6nm operates at a full-rate of 112Gbps using PAM4 modulation and half-rate of 56Gbps using PAM4 modulation, as well as 56/28/10Gbps using NRZ. This IP enables high-speed communications between chips, backplane, and long-haul optical interconnects by converting between parallel data and extremely high-speed serial data streams with improved signal reliability. The ELR PHY provides additional performance margin to highloss and reflective channels by incorporating reflection cancellation and enhanced digital signal processing. The area- and power-optimized design is ideal for high port-density applications that require long-reach and medium-reach links.
The 112G SerDes IP supports primary Ethernet data rates listed in Table 1 within +/- 200ppm. An integrated microcontroller allows for fully autonomous startup, adaptation, and service operation without requiring ASIC intervention. A programming and observation interface is provided via a parallel bus with MDIO-style addressing (port, device, address)
There are several comprehensive on-chip diagnostic tools that enable testability and easy debugging. A post-equalized histogram is available for accurate estimation of bit error rate (BER) even in the absence of actual bit errors. Vertical eye statistics can be logged to allow optional optimization of the device settings. The Channel Estimator hardware allows the accurate measurement of the channel response to assess package, connector, and trace characteristics.