Family of low power PAM4 gearbox and retimer DSPs for system line cards.


Family of low power PAM4 gearbox and retimer DSPs for system line cards.
Inphi’s Vega™ family of low power 50/100/200/400G PAM4 Gearbox and Retimer DSPs for system line cards leverages our industry-leading DSP-based PAM4 to expand the bandwidth capacity of next generation networks. The Vega family delivers accelerated any-to-any connectivity for wired network infrastructure at cloud-scale data centers, enterprise, and service providers. The Vega PAM4 Gearbox and Retimers support next generation optical modules and serve as the external device needed to drive the channels in the Retimer applications or as a gearbox in rate-mismatched applications on highly dense system line cards.

Key Features

  • DSP Engine with a unique mixed-mode DSP architecture for high-performance, low power applications needing adaptability and configurability.
  • Enables support and interoperability for next generation 56 Gbps PAM4 I/O switches to current generation 10/25Gbps NRZ based I/ Os such as QSFP optical modules.
  • Long-reach performance capable of compensating for > 30dB insertion loss on both the line and host interfaces at 56 Gbps.
  • IEEE 802.3bs compliant FEC capability, supporting multiple FEC options: KR4, KP4 and KR.
  • Enables low power with high-performance DSP-based equalization to address IEEE 802.3bs/cd 50/100/200/400GbE for backplane and copper cabling.
  • CDAUI-8 chip-to-module and chip-to-chip.
  • OIF 56G-LR-PAM4 for PCB and cabled backplane.
  • Numerous self-test and loopback modes that allow diagnostic monitoring of channel and system parameters.
  • Test and PRBS pattern generator.
  • Full crossbar support.
  • Asynchronous and independent operation across SerDes lanes.
  • Eye-scan, samplers and monitors on all receiver interfaces for link margin and stress testing along with GUI and API routines for data and error analytics.

Module Applications

400G DR4/FR4

400G LR4/8

400G SR8/SR4.2

200G DR4/FR4/ SR4

100G DR/FR

100G CWDM4/SR4

100G SR2


Target Applications

Backplane: Interconnect options