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信号完整性
Semtech GN2408
8x CDR，带自适应均衡和发射端去加重功能
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.
概览
功能
- 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
- 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
应用
- IEEE 802.3ap KR to KR repeater
- 40G-KR4 and 40G-CR4 repeater
- 10GFCoE repeaters
- Line card or backplane retimer for:
- Infiniband
- 以太网
- Fibre Channel
- Redundancy switching
- Optical module retimer
- High-speed active cable retimer