Renesas 89H64H16G3YCBLGI

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, SSD storage arrays, and multi-root I/O modules.

For engineers reviewing the 89H64H16G3 datasheet, 89H64H16G3 pinout, 89H64H16G3 application, or 89H64H16G3 equivalent, key selection criteria include PCIe Gen3 compliance, partitioned multi-root topology 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

This switch implements a full PCIe Base Specification 3.0-compliant DL/Transaction Layer across all 16 ports, with integrated SerDes supporting dynamic x8/x4/x2/x1 link width negotiation and autonomous lane reversal. It delivers deterministic low-latency forwarding via cut-through switching and supports multicast traffic per PCIe spec.

RAS features include end-to-end data path parity, ECRC on all TLPs, AER reporting per port, IEEE 1149.1/1149.6 JTAG debug access, and SECDED ECC protection across all internal SRAM blocks - enabling carrier-grade reliability in multi-host server and storage controller applications.

Key Specifications

Pinout & Package

Package: 35 mm × 35 mm Fine-Pitch Flip-Chip Ball Grid Array (FCBGA) with 1156 I/O balls, designed for high-speed PCIe Gen3 signal routing and thermal management in dense server backplanes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with the 89H64H16G3, the PAX1124 adds DMA offload but increases board area and complexity, while the PE89124 offers Gen4 readiness at the cost of reduced partition granularity - making the 89H64H16G3 optimal for space-constrained, partition-critical server I/O expansion.

Availability

The 89H64H16G3 is available at Aetrix Electronics and suitable for enterprise server I/O expansion, SSD storage array interconnect, multi-root I/O virtualization, and intelligent I/O module design requiring stable component supply and long-term lifecycle assurance.

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 timing, memory interface, RF, and PCIe connectivity solutions - acquired by Renesas Electronics in 2019.

The 89H64H16G3 belongs to IDT's PCIe Switch family, engineered specifically for high-throughput, low-latency, and RAS-enhanced system interconnect in enterprise servers and storage systems.

FAQ

What PCIe generations does the 89H64H16G3 support?

The 89H64H16G3 fully supports PCIe Gen3 at 8.0 GT/s per lane and maintains backward compatibility with Gen2 (5.0 GT/s) and Gen1 (2.5 GT/s). Its integrated SerDes dynamically negotiates speed and link width per port, enabling mixed-generation topologies without external retimers. All compliance testing and performance metrics in the official datasheet are validated at Gen3 line rate.

How many independent switch partitions does the 89H64H16G3 support?

The 89H64H16G3 supports up to 16 fully independent hardware-enforced switch partitions. Each partition operates with isolated route tables, scheduler contexts, and upstream port assignments - allowing dynamic reconfiguration and movable upstream ports across partitions. This capability is essential for MR-IOV and secure multi-tenant server deployments.

Does the 89H64H16G3 include built-in error correction for internal memory?

Yes, the 89H64H16G3 implements SECDED (Single Error Correction, Double Error Detection) ECC protection on all internal RAM structures, including route tables, credit buffers, and descriptor memories. This RAS feature is enabled by default at power-on and is required for enterprise-class reliability certification in server and storage applications.

What evaluation hardware is available for the 89H64H16G3?

IDT provides the 89KTPES64H16G3 Evaluation Board for the 89H64H16G3, which includes full PCIe Gen3 slot connectivity, onboard SMBus configuration, and debug headers for JTAG and ODS (On-Die Scope) access. The board ships with PCIe Browser software and PRBS test utilities - all documented at idt.com/support/89H64H16G3.

What package type and ball count does the 89H64H16G3 use?

The 89H64H16G3 is packaged in a 35 mm × 35 mm Fine-Pitch Flip-Chip Ball Grid Array (FCBGA) with 1156 solder balls. This package supports high-speed signal integrity for PCIe Gen3, includes dedicated power/ground ball arrays, and is qualified for lead-free reflow per JEDEC J-STD-020.