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Interface IP

6G Multi-protocol SerDes PHY

Competitive with even single protocol solutions, our 6G Multi-protocol SerDes (MPS) PHYs are a general-purpose, high-speed serial link subsystem that supports a broad range if standards with an optimized area footprint and power envelope.

How the 6G PHY works

The Rambus 6G Multi-protocol SerDes (MPS) PHYs are a general-purpose, high-speed serial link subsystem that support data rates from 1.25 Gbps to 6.375 Gbps. Optimized for power and area, they can compete even with single-protocol solutions.

The PHYs include a PMA hard macro that supports a broad range of networking protocols and a PCS-BIST soft macro for PCIe that is PIPE4 compliant. They have a minimal set of broadside control and is configurable in x2, x4 and x8 lane configurations. This gives the PHYs improved flexibility and support for a wide range of applications.

6G MPS Subsystem Example
MPSL Subsystem Example

The 6G PHYs feature Built-in-self-test (BIST) with PRBS checker functionality, transmit and receive equalization, and supports a wide range of reference clock multipliers to improve system margin and performance. This ensures the best signal quality and enables greater design flexibility.

Available on TSMC and Global Foundry process nodes.

SerDes Signal Integrity Challenges at 28Gbps and Beyond

SerDes Signal Integrity Challenges at 28Gbps and Beyond

Maintaining signal integrity has become increasingly difficult as data rates moves past 28Gbps to 56Gbps and beyond. Up to 28Gbps rates, NRZ is the preferred and standardized encoding scheme which consists of 1’s and 0’s. NRZ is also referred to as PAM2 (pulse amplitude modulation, 2-level), due to its two amplitude levels which contain 1 bit of information in every symbol. With serial data rates hitting 56 Gb/s per channel, signal impairments caused by increased bandwidth has prompted the high-speed serial data industry to adopt PAM4, or 4-level pulse amplitude modulation. 

Solution Offerings

Protocol Compatibility

ProtocolData Rate (Gbps) Application
PCIe1/2/32.5, 5Graphics cards and high-bandwidth peripherals
SATA 1/2/31.5, 3, 6Personal computing and server storage
GbE1.25Backplane and copper cable networking
CEI6-SR4.976-6.375Telecom and networking
USB 2/30.4, 5Computing and peripheral connectivity




Phase Interpolator-Based CDR

Reduces cost, power and area of clock and data recovery (CDR) circuit and improves jitter performance in high-speed parallel and serial links versus PLL-based CDRs.