Renesas 89H16NT16G2ZAHLGI8

Overview

89H16NT16G2ZAHLGI8 from IDT is an evaluation board (EVB) designed for the 89HPES16NT16G2 PCIe Gen2 16-lane, 16-port inter-domain switch IC. It provides full access to all 16 PCIe lanes via mezzanine and SAS connectors, supports configurable upstream/downstream port partitioning, NTB mode, and local port clocking, and enables validation of PCIe link training, lane reversal, polarity inversion, and power-on reconfiguration in server and storage systems.

For engineers reviewing the 89H16NT16G2ZAHLGI8 datasheet, 89H16NT16G2ZAHLGI8 pinout, 89H16NT16G2ZAHLGI8 application, or 89H16NT16G2ZAHLGI8 equivalent, this page delivers verified hardware configuration options, clocking modes (common/non-common/local), boot vector settings, SMBus master/slave interfaces, JTAG debug access, and PCIe slot breakout capabilities - all confirmed from the official EB-LOGAN-19 Evaluation Board Manual (Rev. Feb 2011).

Technical Context

The 89H16NT16G2ZAHLGI8 implements a complete PCIe 2.1-compliant evaluation platform for the PES16NT16G2 switch, supporting up to 16 x1 ports (with adjacent ports combinable into x2/x4/x8) and Gen2 SerDes speeds of 5 GT/s. It integrates dual differential global reference clocks (100/125 MHz selectable), onboard ICS841484 clock generator (U49), and per-port clock muxing for ports 8 and 16 via DIP switches S17/S19.

Power delivery includes five dedicated regulators: 1.0V VDDCORE (U59), 1.0V VDDPEA (U62), 1.0V VDDPETA (U68), 2.5V VDDPEHA (U65), and 3.3V VDDIO (U56), with strict VDDCORE-to-VDDIO sequencing enforced. Reset architecture supports both fundamental PERST# propagation and downstream hot-reset via push-button and SMBus-controlled logic.

Key Specifications

Availability

89H16NT16G2ZAHLGI8 is available at Aetrix Electronics and suitable for PCIe switch validation, server/storage interconnect prototyping, multi-root NTB testing, and PCIe Gen2 signal integrity analysis requiring stable component supply and traceable evaluation hardware.

Supply support for 89H16NT16G2ZAHLGI8 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 89H16NT16G2ZAHLGI8 belongs to IDT's Logan family of PCIe evaluation platforms, engineered specifically to accelerate development and system-level validation of IDT's PES-series inter-domain PCIe switches in enterprise infrastructure environments.

FAQ

What is the primary function of the 89H16NT16G2ZAHLGI8 evaluation board?

The 89H16NT16G2ZAHLGI8 is a dedicated evaluation platform for the IDT 89HPES16NT16G2 PCIe Gen2 switch IC. It provides physical access to all 16 lanes, configurable clock sources, SMBus and JTAG interfaces, PCIe slot breakout capability, and hardware controls for validating switch partitioning, NTB operation, link training behavior, and power sequencing - directly supporting design-in and interoperability testing.

Which PCIe switch IC does the 89H16NT16G2ZAHLGI8 evaluate?

The 89H16NT16G2ZAHLGI8 evaluates the IDT 89HPES16NT16G2 - a 16-lane, 16-port PCI Express Base Specification 2.1 compliant switch with Gen2 (5 GT/s) SerDes, support for up to eight NTB ports, automatic lane reversal and polarity inversion, and flexible port width negotiation (x1/x2/x4/x8). The board also supports evaluation of related devices including PES24NT24G2 and PES12NT12G2.

Does the 89H16NT16G2ZAHLGI8 support local port clocking, and how is it configured?

Yes, the 89H16NT16G2ZAHLGI8 supports local port clocking for specific ports including Port 8 and Port 16. Configuration is performed using DIP switches S19 and S17 respectively, selecting between SATA connectors (J62/J64) or dedicated on-board clock generators (U118/U120). This enables independent reference clock sourcing required for non-common clock topologies in multi-root or storage expansion applications.

How are reference clocks selected and distributed on the 89H16NT16G2ZAHLGI8?

The 89H16NT16G2ZAHLGI8 uses two mandatory differential global reference clocks. Selection is made via jumpers J18/J19 (for Clock#0/Clock#1) choosing among SMA inputs (J17/J20/J66/J67), clock buffer outputs (U51), or SATA connectors (J21/J22). Frequency (100/125 MHz) is set by SW10[2], and onboard clock generation is provided by ICS841484 (U49) tied to 25 MHz oscillator X1 - output accessible at SMA headers J119/J120.

What power requirements and sequencing rules apply to the 89H16NT16G2ZAHLGI8?

The 89H16NT16G2ZAHLGI8 requires a 12 V input via the 24-pin EPS12V connector (J69) and internally generates five regulated voltages: 1.0 V (VDDCORE, VDDPEA, VDDPETA), 2.5 V (VDDPEHA), and 3.3 V (VDDIO). Critical sequencing mandates that VDDCORE remain at least 1.0 V below VDDIO during power-up; no other voltage ramp ordering is required. A heatsink with integrated fan is mandatory for thermal management.