Overview

The GN2408 is an eight-lane retimer with adaptive equalization and transmit de-emphasis designed for 5Gbps to 12.8Gbps of full rate operations. It is also designed for half-rate and quarter-rate
operation to retime down to 1.25Gbps, Ethernet, Infiniband and Fiber Channel applications. The GN2408 extends the reach and robustness of high-speed serial links by compensating for losses
and reflections in the transmission medium, and by resetting the crosstalk and jitter budgets.

Features

  • Eight-lane repeater/retimer designed to operate from 5Gbps to 12.8Gbps at full rate
  • Support for half and quarter rate down to 1.25Gbps Accepts up to two input reference clocks
  • IEEE 802.3ba (10GbE/100GbE) compliant
  • Supports 10GBASE-KR link training
  • Infiniband SDR/DDR/QDR compliant
  • Supports 40GBase-KR4 and 40GBase-CR4 Link Training
  • Adaptive linear input equalization + adaptive multi-tap DFE
  • Multi-tap output de-emphasis
  • Programmable output swing
  • Integrated 8x8 crosspoint
  • Host-side and line-side loopback using crosspoint
  • Low serial mode latency of 20UI
  • Mission-mode eye monitor, PRBS generator and checker
  1. Supports PRBS7, PRBS9, PRBS11 & PRBS31 and custom patterns
  • Individually programmable channels
  • I2C control
  • Supports IEEE 1149.1 and 1149.6 (JTAG) boundary scan
  • Per-lane loss-of-signal detect
  • Low power dissipation: 295mW/channel typical at 12.8Gbps
  • 0.9V core supply; 1.8V I/O supply
  • 13mm x 13mm BGA package

Applications

  • IEEE 802.3ap KR to KR repeater
  • 40G-KR4 and 40G-CR4 repeater
  • 10GFCoE repeaters
  • Line card or backplane retimer for:
  1. Infiniband
  2. Ethernet
  3. Fibre Channel
  • Redundancy switching
  • Optical module retimer
  • High-speed active cable retimer

Inventory

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