An exploration of the technical feasibility of the major technology options for 400GE backplanes.
Simulation results for NRZ, ENRZ & PAM-4 on 16-wire full-sized 400GE backplanes
Kandou’s ENRZ Interface
Kandou’s Interfaces for High Speed Serial Links
A Pin- and Power-Efficient Low-Latency 8-to-12Gb/s/wire 8b8w-Coded SerDes Link for High-Loss Channels in 40nm Technology
ISSCC 2014 Paper Presentation (Session 26.3)
Chord Signaling for High Bandwidth Extra Short Reach Interfaces
Path to 112G (on two wires), A Two Generation Investigation
XSR/USR Interface Analysis Including Chord Signaling Options
MR Interface Analysis Including Chord Signaling Options
ENRZ Advanced Modulation for Low Latency Applications
Chord™ Signaling Modulation for 100G and 200G Backplane Applications
A Pin- and Power-Efficient 20.83Gb/s/wire 0.94pJ/bit Forwarded Clock CNRZ-5 Coded SerDes up to 12mm for MCM Packages in 28nm CMOS
ICCSS 2016 Presentation
A Pin-Efficient 20.83Gb/s/wire 0.94pJ/bit Forwarded Clock CNRZ-5-Coded SerDes up to 12mm for MCM Packages in 28nm CMOS
ISSCC 2016 Paper
Glasswing IP Family: GW28-125-USR SerDes 125Gbps Throughput
The Glasswing SerDes family is a programmable IP designed and optimized for in-package applications. Glasswing provides high system bandwidth with low power consumption through the use of 5b6w ChordTM signaling and employs a forwarded clock architecture. The Glasswing IP may be deployed in multiple instances to provide efFicient extended interfaces.
The GW28-125-USR SerDes is a hard IP SerDes solution that provides a high throughput for short reach interposer and multi-chip-module applications such as chip-to-chip, processor or switch to memory, and in- package interfaces. Typical supported applications will deliver 25GBaud over channels of 5mm to 25mm with insertion losses in the range 3dB to 6dB at Nyquist.
The GW28-125-USR achieves low power through coding, efFicient circuitry, simple clocking and equalization schemes.