PEX9716-AA80BI G

Analog Switches - Special Purpose Overview

The PEX9716-AA80BI G is a managed PCI Express switch from the Broadcom PEX9700 series, designed for high-performance data center fabrics. It features 16 lanes and 5 ports with integrated on-chip SerDes supporting PCIe Gen 3 speeds up to 8.0 GT/s per lane. The device provides an aggregate bandwidth of 256 GT (8.0 GT/s/Lane x 16 SerDes x2 full-duplex) and achieves cut-through packet latency of 154 ns for x16 to x16 configurations. It utilizes a 324-ball BGA package measuring 19x19 mm². Typical power consumption ranges from 3.8 W in peer-to-peer fanout mode to 4.8 W in fabric mode.

Analog Switches - Special Purpose Feature Summary

• Supports shared I/O using SR-IOV standards, allowing Virtual Functions to be concurrently assigned to multiple hosts via standard BIOS and OS software.
• Enables general-purpose host-to-host communication through virtual Ethernet NICs and Direct Memory Access (DMA), as well as low-latency Tunneled Window Connection (TWC).
• Features Downstream Port Containment (DPC/eDPC) to disable downstream links after uncorrectable errors, ensuring robust system recovery.
• Includes a dedicated management port for an off-chip microprocessor (mCPU) to handle initialization, routing configuration, error handling, and hot-plug events.

Analog Switches - Special Purpose Applications

• High-Performance Computing (HPC) clusters requiring high bandwidth and low latency pathways.
• Hyper-converged infrastructure systems demanding cost-effective scalability.
• NVMe storage architectures needing flexible I/O sharing capabilities.

Analog Switches - Special Purpose Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheets. Confirm RoHS compliance status and ensure the specific suffix matches required packaging or temperature grades. Review End-of-Life notifications and discontinuance schedules prior to procurement planning.

Analog Switches - Special Purpose Selection Notes

Select this model for applications requiring exactly five ports and sixteen lanes within a compact footprint. Consider alternative series members if higher aggregate bandwidth or non-blocking multicast DMA features are necessary for the target topology.

Analog Switches - Special Purpose Part Context

This component belongs to the PEX9700 series of managed switches based on ExpressFabric technology. It is manufactured by Broadcom Limited and serves as a key element for building scalable, low-latency PCI Express fabrics in enterprise environments.

Analog Switches - Special Purpose Replacement Considerations

Direct substitutes include other models within the PEX9700 family such as the PEX9712-AA80BI G or PEX9733-AA80BI G, depending on whether lane count or port quantity adjustments are acceptable for the design.

Analog Switches - Special Purpose FAQ

Does the PEX9716 support multicast through DMA?

No, the PEX9716 does not support multicast through DMA; this feature is available in higher-tier models like the PEX9733 and above.

What is the maximum payload size supported by this switch?

The switch supports a maximum payload size of 2KB.

Can any port on the PEX9716 function as a host port?

Yes, any port can be designated as either a host port or a downstream device port.