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信号完整性
Semtech GN2412
12x CDR，带自适应均衡和发射端去加重功能
The GN2412 Family is a twelve -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 GN2412 Family 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
- Twelve-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
- Adaptive linear input equalization + adaptive multi-tap DFE
- Multi-tap output de-emphasis
- Programmable output swing
- Integrated 12x12 crosspoint
- Host-side and line-side loopback using crosspoint
- Low serial mode latency of 20UI
- Jitter termination filters jitter between 1MHz and the CDR loop bandwidth
- High input jitter tolerance
- • 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 (A3 only)
- Per-lane loss-of-signal detect
• Low power dissipation:
A3 power dissipation
- 250mW/channel typical @ 12.8Gbps
- 230mW/channel typical @ 11.5Gbps
- 215mW/channel typical @ 10.3Gbps
- 205mW/channel typical @ 8Gbps
A2 power dissipation
- 265mW/channel typical @ 12.8Gbps
- 250mW/channel typical @ 11.5Gbps
- 235mW/channel typical @ 10.3Gbps
- 205mW/channel typical @ 8Gbps
- 0.9V core supply; 1.8V I/O supply
- 13mm x 13mm BGA package
应用
- IEEE 802.3ap KR to KR 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