The Rambus 12G Multi-protocol SerDes (MPS) PHYs are a general-purpose, high-speed serial link transceiver subsystem that support data rates from 1.25 Gbps to 12 Gbps. Optimized for power and area in high-loss channels, our 12G MPS PHYs are suitable for a broad range of enterprise-class systems.
The PHYs include a PMA hard macro that supports a broad range of networking protocols as well as 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.
The 12G SerDes PHY utilizes transmit and receive equalization, data rate negotiation, and equalization adaptation to improve system margin and performance. This ensures that data is recovered even in the presence of channel and system interference.
Available on TSMC, Global Foundry, and Samsung process nodes.
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.
|Protocol||Data Rate (Gbps)||Application|
|PCIe1/2/3||2.5, 5, 8||Graphics cards and high-bandwidth peripherals|
|10GBase-KR||10.3125||Copper backplane networking|
|1000Base-KX||1.25||Backplane and copper cable networking|
|10GBase-KX4||3.125,6.25||Copper backplane networking|
|XAUI/2xXAUI||3.125, 6.25||Chip-to-Chip connectivity|
|SAS 12G||1.5, 3, 6, 12||Server storage|
|SATA||1.5, 3, 6||Personal and server storage|
|CEI6 – SR/LR||4.976 – 6.375||Telecom and networking|
|CEI11-SR, LR||9.95-11.2||Telecom and networking|
|CPRI||0.614 – 9.83||Wireless base stations|
|JESD 204B||3.125 – 12||High-speed data converter connectivity|
|XFI/SFI||9.95-11.2||XFP and SFP+ Optical Modules|
|Interlaken 6G/10 G||4.976-6.375, 10.3125||Networking|