Renesas 89H32NT24BG2ZAHLG8

Overview

89H32NT24BG2ZAHLG8 from Integrated Device Technology, Inc. is an evaluation board designed for the PES32NT24BG2 PCIe Gen2 32-lane, 24-port inter-domain switch. It supports x1/x2/x4/x8 lane configurations, local port clocking, NTB partitioning, and DMA testing across up to 23 downstream ports using optional 12-PACK breakout boards. Used in server and storage system validation.

For engineers reviewing the 89H32NT24BG2ZAHLG8 datasheet, 89H32NT24BG2ZAHLG8 pinout, 89H32NT24BG2ZAHLG8 application, or 89H32NT24BG2ZAHLG8 equivalent, this board enables full hardware/software co-validation of PCIe switch topology, clocking modes (common/non-common/local), boot configuration, SMBus-managed EEPROM programming, and multi-root NTB operation under real host-system conditions.

Technical Context

The 89H32NT24BG2ZAHLG8 implements a complete PCIe Base Specification 2.1 (Gen2) evaluation platform centered on the PES32NT24BG2 switch IC. It provides four mezzanine connectors-each carrying 8 lanes-to support flexible fan-out to x8/x4/x2/x1 endpoint cards via IDT-provided adapters including mini-SAS mezzanine cards, PCIe edge-to-SATA/SAS adapters, and iSAS-to-iSAS/iSAS-to-SATA cables.

Hardware-level configurability includes jumper- and DIP-switch-controlled reference clock sourcing (SMA, onboard ICS841484 generator, or SATA connectors), dual global clocks (100/125 MHz), per-port local clock inputs (100 MHz only), CLKMODE[1:0] boot vector selection, SMBus slave/master interfaces, JTAG debug access, and warm reset push-button. Power sequencing follows strict PES32NT24AG2 requirements.

Key Specifications

Availability

89H32NT24BG2ZAHLG8 is available at Aetrix Electronics and suitable for PCIe switch validation, server/storage architecture prototyping, and NTB-based multi-root system development requiring stable component supply and full hardware-software integration support.

Supply support for 89H32NT24BG2ZAHLG8 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 timing, memory interface, RF, and high-performance interconnect solutions for datacenter, communications, and industrial applications.

The 89H32NT24BG2ZAHLG8 belongs to IDT's EB-LOGAN series of PCIe switch evaluation platforms, engineered specifically to accelerate validation of IDT's PCI Express inter-domain switches-including PES32NT24AG2/BG2-in real-world server, storage, and multi-root topologies.

FAQ

What is the primary function of the 89H32NT24BG2ZAHLG8 evaluation board?

The 89H32NT24BG2ZAHLG8 evaluation board is a dedicated hardware platform for validating the PES32NT24BG2 PCIe Gen2 24-port, 32-lane inter-domain switch. It enables comprehensive testing of switch partitioning, NTB operation, DMA, local port clocking, and full PCIe link negotiation across configurable x1–x8 downstream ports using IDT-provided mezzanine and edge adapters. The 89H32NT24BG2ZAHLG8 does not contain the switch IC itself but hosts it as the device under test (DUT).

Which PCIe switch variants does the 89H32NT24BG2ZAHLG8 support?

The 89H32NT24BG2ZAHLG8 is explicitly validated for both the PES32NT24AG2 and PES32NT24BG2 switches, and also supports other members of the same family including PES24NT24AG2, PES32NT8AG2, and PES24NT6AG2. All supported devices share identical pinout, power, clocking, and interface requirements, allowing the 89H32NT24BG2ZAHLG8 to serve as a unified evaluation platform across multiple IDT PCIe switch SKUs without hardware modification.

How does the 89H32NT24BG2ZAHLG8 handle reference clocking for the PES32NT24BG2 device?

The 89H32NT24BG2ZAHLG8 provides dual mandatory differential global reference clocks (GCLK0/GCLK1) sourced either from SMA connectors, onboard ICS841484 clock generator (100/125 MHz selectable), or SATA connectors via configurable jumpers. Local port clocks (PxCLK) are supported on specific ports (e.g., ports 0, 2, 4, 6, 8, 12, 16, 20) at fixed 100 MHz, routed through dedicated headers or DIP-switch-selectable buffers. Clock mode (common/non-common/local) is set via CLKMODE[1:0] pins in the boot configuration vector.

Can the 89H32NT24BG2ZAHLG8 be used for NTB (Non-Transparent Bridge) evaluation?

Yes - the 89H32NT24BG2ZAHLG8 fully supports NTB evaluation. Up to eight ports can be configured as NTB endpoints, enabling multi-root PCIe topologies where independent host systems communicate across the switch without address space transparency. Configuration is performed via SMBus-accessible registers and boot-time EEPROM programming, with validation aided by IDT's GUI-based device management software for Windows and Linux included with the 89H32NT24BG2ZAHLG8.

What adapter types are required to connect the 89H32NT24BG2ZAHLG8 to a host system?

To connect the 89H32NT24BG2ZAHLG8 to a host system, IDT-provided PCIe edge adapters are required: either the PCIe x4 Edge-to-SATA Adapter or PCIe x8 Edge-to-SAS Adapter. These plug into standard host PCIe slots and interface with the 89H32NT24BG2ZAHLG8's mezzanine connectors via IDT-supplied iSAS-to-SATA or iSAS-to-iSAS cables. Optional 12-PACK breakout boards extend downstream port count beyond the main board's six physical slots.