MAX72466
PCIe Gen2.0 Signal Conditioner
Eliminates Signal Integrity Risks
This product is Not Recommended for New Designs. Some versions may be No Longer
Available or being discontinued and subject to Last Time Buy, after which new orders can not
be placed.
Description
The MAX72466 signal conditioner cleans up intersymbol interference (ISI) and reduces jitter to
extend the reach of 5Gbps PCIe® signals over FR4 or copper cables. Each of the 8 PHYs
includes a fully adaptive receiver, low jitter clock and data recovery, and a highly configurable
400mV to 1600mV transmitter. The transmit amplitude, deemphasis, slew rate, and zero
crossing are adjustable through I²C or UART, or can be loaded from an external flash memory.
Receiver auto optimizes during link training.
In addition to link conditioning, the MAX72466 provides adjustable LOS thresholds and filters,
eye mapping and monitoring, an interrupt output, and 10 GPIOs. The eye mapper allows
viewing of the internal eye margin, while the eye monitor detects channel degradation in real
time. Support for PCIe over optical is also included.
Signaling rates of 2.5Gbps and 5Gbps are supported with a 100MHz reference clock. The
MAX72466 can recover InfiniBand™, USB 3.0, and other high-speed signals with appropriate
register settings and a suitable oscillator frequency.
Key Features
Eight Independent PHYs
Adaptive Receiver with DFE
Low Jitter Clock and Data Recovery with Spread-Spectrum Clock Support
400mV to 1600mV Transmitter Amplitude with 0 to 9dB Deemphasis and Slew-Rate
Control
Inband Power-Down Support
15mm x 15mm, 196-Ball FCCSP with 1mm Ball Pitch
Applications/Uses
2.5Gbps and 5.0Gbps PCIe 2.0 Over Lossy, Jitter-Challenged Channels
Cable I/O Cards for 15m or Greater Reach
Out of the Box PCIe
Upgrading Legacy Backplanes/Midplanes to 5Gbps
© 2016 Maxim Integrated
