Renesas 89H64H16G3YCBL

Overview

The 89H64H16G3 from IDT is a 64-lane, 16-port PCI Express Gen3 system interconnect switch with non-blocking cut-through architecture, 8.0 GT/s per lane, 128 GBps aggregate bandwidth, and support for up to 16 independent switch partitions - deployed in enterprise servers for PCIe expansion, SSD storage arrays, and multi-root I/O consolidation.

For engineers reviewing the 89H64H16G3 datasheet, 89H64H16G3 pinout, 89H64H16G3 application, or 89H64H16G3 equivalent, key selection criteria include Gen3 compliance, partitioned multi-root support, SECDED ECC on internal RAMs, hot-plug capability on all downstream ports, and FCBGA-1156 package compatibility with high-density server PCB layouts.

Technical Context

The 89H64H16G3 implements a full Gen3-compliant PCIe switch core with DL/Transaction Layer and SerDes supporting x8/x4/x2/x1 link widths across all 16 ports. It delivers deterministic low-latency cut-through forwarding and supports multicast per PCIe 3.0 specification.

Its architecture enables dynamic reconfiguration of switch partitions, movable upstream port assignment, and autonomous per-port link width/speed negotiation - all without power sequencing requirements and with dual clock input options (global/local reference).

Key Specifications

Pinout & Package

Packaged in a 35 mm × 35 mm 1156-ball Fine-Pitch Chip Array Ball Grid Array (FCBGA) with 0.8 mm ball pitch and standard thermal pad configuration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PCIe Gen3 switch applications.

Compared with the Microchip PAX1616 and AMD/PLX PE8747, the 89H64H16G3 uniquely combines 16 hardware-isolated partitions, SECDED ECC on all internal RAMs, and autonomous lane reversal - making it the only option qualified for new multi-root, high-availability server and storage platforms requiring concurrent fault containment and Gen3 throughput.

Availability

The 89H64H16G3 is available at Aetrix Electronics and suitable for enterprise server I/O expansion, SSD storage array interconnect, and intelligent I/O module applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for 89H64H16G3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

IDT (Integrated Device Technology) is a fabless semiconductor company specializing in high-performance interface, memory, timing, and RF solutions - acquired by Renesas Electronics in 2019.

The 89H64H16G3 belongs to IDT's PCIe Switch family, engineered specifically for high-throughput, low-latency, multi-root-capable system interconnect in enterprise and datacenter infrastructure.

FAQ

What PCIe generation and lane configurations does the 89H64H16G3 support?

The 89H64H16G3 supports PCIe Gen3 (8.0 GT/s), Gen2 (5.0 GT/s), and Gen1 (2.5 GT/s) operation. It provides 64 total lanes configurable as up to 16 × x4 ports or 8 × x8 ports, with automatic per-port link width and speed negotiation. Each SerDes lane operates independently, enabling mixed-width topologies without manual configuration.

Does the 89H64H16G3 support multi-root I/O virtualization (MR-IOV)?

Yes, the 89H64H16G3 supports up to 16 fully independent switch partitions with configurable downstream device numbering and dynamic reconfiguration. It implements Access Control Services (ACS), Alternative Routing ID (ARI), and movable upstream ports - all required for hardware-enforced MR-IOV compliance in virtualized server environments.

What reliability features are implemented in the 89H64H16G3?

The 89H64H16G3 includes SECDED ECC protection on all internal RAMs, end-to-end data path parity, Advanced Error Reporting (AER) on every port, ECRC support, and IEEE 1149.1/1149.6 JTAG compliance. These features enable robust error detection, containment, and diagnostic visibility in mission-critical server and storage applications using the 89H64H16G3.

Is hot-plug supported on all ports of the 89H64H16G3?

Yes, hot-plug is supported on all downstream switch ports of the 89H64H16G3. The device generates INTx or MSI interrupts on link up/down transitions and provides on-chip link activity/status outputs - enabling OS- and firmware-level hot-plug event handling without external logic. Upstream port hot-plug is not supported.

What evaluation hardware is available for the 89H64H16G3?

IDT provides the 89KTPES64H16G3 Evaluation Board for the 89H64H16G3, bundled with PCIe Browser Software, On-Die Scope (ODS), and built-in PRBS generator/checker. This platform enables full register-level configuration, link training analysis, and real-time traffic monitoring - accelerating bring-up and validation of systems using the 89H64H16G3.