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BCM85657: 5-nm 16-Lane PCIe Gen5 and CXL 2.0 Retimer

Overviews:

BCM85657 is a 16-lane, low-power, low-latency, symmetrical PCIe Gen5, and CXL 2.0 integrated MAC and PHY retimer. This device extends the reach between a root complex (RC) and endpoint (EP) by >40 dB of loss on both the sides at 32 GT/s. Each lane is capable of multiple data rates, including Gen5 (32G), Gen4 (16G), Gen3 (8G), Gen2 (4G), and Gen1 (2.5G). The bifurcation mux and MAC support groups of 1x 16 lanes, 4x 4 lanes, and 8x 2 lanes.

BCM85657 - Key Features:

• Compatible with PCIe Gen5/Gen4/Gen3/Gen2/Gen1 and Compute Express Link (CXL 2.0) standards

• Operates at 32, 16, 8, 5, and 2.5 GT/s

• Supports parallel lane groupings per transfer:

− Sixteen lanes can be statically configured as a selected subset of the following combinations:

− One 16-lane link (1x 16)

− Two 8-lane links (2x 8)

− Four 4-lane links (4x 4)

− Eight 2-lane links (8x 2)

• Supports low-latency mode

• Extends reach to >40 dB at 32 GT/s

• RX integrates multistage linear EQ and adaptive 16-tap DFE; TX uses 4-tap FIR taps

• Receiver is capable of operating at data rates with REFCLK, independent of transmitter

• Provides clock and data recovery (CDR) tolerance of spread inputs up to 6000 ppm relative to the reference clock

• Supports LT when connected with an LT-capable link partner

Applications:

HPC and AI servers for Hyperscalers and Data Centers

PCIe storage servers

PCIe riser cards, interposer cards, and backplane

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

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  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

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  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

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• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.