Renesas 89HPES10T4G2ZBBCGI

Overview

89HPES10T4G2ZBBCGI from Integrated Device Technology, Inc. is a 10-lane, 4-port PCI Express Gen2 switch IC designed for high-throughput server, storage, and networking I/O expansion. It delivers 12 GBps full-duplex switching capacity, supports up to 2048-byte Max Payload Size, implements cut-through latency architecture, and complies with PCI Express Base Specification Revision 2.0.

For engineers reviewing the 89HPES10T4G2ZBBCGI datasheet, 89HPES10T4G2ZBBCGI pinout, 89HPES10T4G2ZBBCGI application, or 89HPES10T4G2ZBBCGI equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative parts for PCIe Gen2 fan-out designs requiring RAS features, SMBus-configurable operation, and Hot-Plug support.

Technical Context

The 89HPES10T4G2ZBBCGI implements a layered PCI Express architecture compliant with Revision 2.0, integrating SerDes, Physical, Data Link, and Transaction layers across all ports. Its switch core supports both store-and-forward and cut-through modes, enabling low-latency memory and I/O transaction routing in servers and embedded systems.

It features dual SMBus interfaces (master and slave), nine configurable GPIOs with alternate functions including port reset outputs and I/O expander interrupt inputs, and on-chip parity protection for end-to-end TLP integrity - independent of system-level ECRC implementation.

Key Specifications

Pinout & Package

Packaged in a 19 mm × 19 mm 324-ball CABGA (1 mm ball pitch), the 89HPES10T4G2ZBBCGI uses a thermally enhanced ball grid array suitable for high-density server PCBs with ≥8 layers and forced airflow.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PCIe Gen2 switching applications.

Compared with 89HPES10T4G2ZBBCGI, the 89HPES12T4G2ZBBCGI offers direct scalability within the same family, whereas the PI7C9X2G304SVDE serves as a functionally aligned but architecturally distinct alternative requiring validation of Hot-Plug timing, GPIO behavior, and error-reporting integration.

Availability

89HPES10T4G2ZBBCGI is available at Aetrix Electronics and suitable for server I/O expansion, enterprise storage controllers, and communications router line cards requiring stable component supply, long-term lifecycle support, and industrial-temperature operation.

Supply support for 89HPES10T4G2ZBBCGI 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

Integrated Device Technology, Inc. (IDT) is a fabless semiconductor company specializing in high-performance timing, memory interface, and interconnect solutions for data-intensive systems.

The 89HPES10T4G2ZBBCGI belongs to IDT's PRECISE™ family of PCIe switching solutions, engineered specifically for high-reliability, low-latency I/O consolidation in servers, storage arrays, and networking infrastructure.

FAQ

What is the PCIe generation and lane configuration supported by the 89HPES10T4G2ZBBCGI?

The 89HPES10T4G2ZBBCGI is a PCI Express Gen2 switch supporting ten 5 Gbps lanes configured as one x4 upstream port and three x2 downstream ports (Ports 2, 4, and 6). It fully complies with PCI Express Base Specification Revision 2.0 and enables flexible topology fan-out without external SerDes. The 89HPES10T4G2ZBBCGI does not support Gen3 or higher signaling rates.

Does the 89HPES10T4G2ZBBCGI support Hot-Plug functionality, and how is it implemented?

Yes, the 89HPES10T4G2ZBBCGI supports PCI Express Native Hot-Plug on all downstream ports. It uses an external SMBus-connected I/O expander to manage Hot-Plug signals - generating SMBus writes to update output states and responding to expander interrupts via GPIO pins like IOEXPINTN0 and IOEXPINTN2. This architecture minimizes pin count while maintaining full Hot-Swap capability, as confirmed in the official IDT datasheet for the 89HPES10T4G2ZBBCGI.

What power supply rails does the 89HPES10T4G2ZBBCGI require, and what are their tolerances?

The 89HPES10T4G2ZBBCGI requires five dedicated supply rails: VDDCORE (0.9–1.1 V), VDDI/O (3.135–3.465 V), VDDPEA (0.95–1.1 V), VDDPEHA (2.25–2.75 V), and VDDPETA (0.95–1.1 V). Each rail has specified AC noise limits - e.g., ≤25 mV_pp on VDDPEA/VDDPETA and ≤50 mV_pp on VDDPEHA - to ensure SerDes stability. These values are defined in Table 13 of the 89HPES10T4G2ZBBCGI datasheet.

How many General Purpose I/O pins does the 89HPES10T4G2ZBBCGI provide, and what alternate functions are available?

The 89HPES10T4G2ZBBCGI provides nine GPIO pins (GPIO[0], GPIO[1], GPIO[2], GPIO[3], GPIO[4], GPIO[5], GPIO[6], GPIO[7], GPIO[11]). Alternate functions include P2RSTN, P4RSTN, and P6RSTN (downstream port reset outputs), IOEXPINTN0 and IOEXPINTN2 (I/O expander interrupt inputs), and GPEN (General Purpose Event output). All GPIOs are software-configurable as input or output via the SMBus slave interface, as documented for the 89HPES10T4G2ZBBCGI.

Is the 89HPES10T4G2ZBBCGI compatible with PCIe Gen1 endpoints, and how is backward compatibility handled?

Yes, the 89HPES10T4G2ZBBCGI supports backward compatibility with PCIe Gen1 endpoints through automatic per-port link width and speed negotiation. Each port independently negotiates down to Gen1 (2.5 Gbps) and x1/x2 widths based on endpoint capability. This behavior is enabled by default and requires no firmware override - a key feature confirmed in the "Flexible Architecture" section of the 89HPES10T4G2ZBBCGI datasheet.