Renesas 89H16NT16G2ZAHLG8

Overview

89H16NT16G2ZAHLG8 from IDT is an evaluation board (EB-LOGAN-19) designed for the 89HPES16NT16G2 PCIe Gen2 16-lane, 16-port switch - supporting PCIe Base Specification 2.1, x1/x2/x4/x8 lane configurations, automatic polarity inversion, and NTB multi-root capability. It enables hardware validation of switch partitioning, local port clocking, and DMA in server/storage interconnect applications.

For engineers reviewing the 89H16NT16G2ZAHLG8 datasheet, 89H16NT16G2ZAHLG8 pinout, 89H16NT16G2ZAHLG8 application, or 89H16NT16G2ZAHLG8 equivalent, this page delivers verified board-level specifications, jumper-configurable clocking modes (100/125 MHz), SMBus slave/master interfaces, JTAG debug access, and PCIe mezzanine breakout support - all confirmed from IDT's official EB-LOGAN-19 Evaluation Board Manual (Rev. Feb 2011).

Technical Context

The 89H16NT16G2ZAHLG8 board hosts the 89HPES16NT16G2 switch and provides full access to its 16 PCIe lanes via two Mezzanine connectors and SAS/SATA breakout paths. It implements dual global reference clocks (mandatory differential 100/125 MHz) sourced from SMA, onboard ICS841484 generator, or SATA connectors - with configurable CLKMODE[1:0] boot settings determining Common Clock vs. Non-common Clock operation per port.

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

Key Specifications

Availability

89H16NT16G2ZAHLG8 is available at Aetrix Electronics and suitable for PCIe switch validation, server backplane prototyping, storage interconnect testing, and NTB-based multi-root system development requiring stable component supply and traceable evaluation hardware.

Supply support for 89H16NT16G2ZAHLG8 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and PCIe interconnect solutions before its acquisition by Renesas in 2019.

The 89H16NT16G2ZAHLG8 belongs to IDT's EB-LOGAN series of PCIe switch evaluation platforms, engineered specifically to validate high-density, low-latency PCIe Gen2 switching in enterprise servers and storage systems.

FAQ

What is the primary function of the 89H16NT16G2ZAHLG8 evaluation board?

The 89H16NT16G2ZAHLG8 is an official IDT evaluation platform for the 89HPES16NT16G2 PCIe Gen2 switch. It enables functional validation of port configuration, lane bifurcation, NTB peer-to-peer communication, local port clocking, and power-on reconfiguration via SMBus-connected EEPROM - all using real hardware signals and user-controllable jumpers/DIP switches.

Does the 89H16NT16G2ZAHLG8 support PCIe Gen3 or higher speeds?

No. The 89H16NT16G2ZAHLG8 is designed exclusively for PCIe Base Specification 2.1 compliance, supporting Gen2 data rates of 5 GT/s. It does not support Gen3 (8 GT/s) or higher signaling - as confirmed by IDT's documentation, which specifies PES16NT16G2 as a Gen2-only device with no Gen3 SerDes capability.

Can the 89H16NT16G2ZAHLG8 operate without an external power supply?

No. The 89H16NT16G2ZAHLG8 requires a 12 V DC input via its 24-pin Molex EPS12V connector (J69). It contains no onboard AC-DC converter or battery; all internal voltage regulators (for VDDCORE, VDDIO, etc.) derive from this external 12 V source, and operation without it is not supported.

How are clock sources selected on the 89H16NT16G2ZAHLG8 board?

Clock selection on the 89H16NT16G2ZAHLG8 is controlled by physical jumpers (J18/J19 for global clocks) and DIP switches (SW10 for frequency, S10 for onboard generator, S17/S19 for port-specific clocks). Table 2.1–2.9 in IDT's manual defines exact pin mappings - e.g., J18[1–3] selects SMA (J66/J67) for Global Clock #0, while SW10[2] sets 100 MHz (ON) or 125 MHz (OFF) globally.

Is the 89H16NT16G2ZAHLG8 compatible with the 89HPES24NT24G2 switch?

Yes - the 89H16NT16G2ZAHLG8 shares the same EB-LOGAN-19 platform architecture as documented for the 89HPES24NT24G2. IDT explicitly states the board supports "other members of this switch family including PES16NT16G2 and PES12NT12G2", confirming mechanical, power, clock, and interface compatibility across the PESxxNTxxG2 series.