Renesas 89H16NT16G2ZAHLI8

Overview

89H16NT16G2ZAHLI8 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 operation. It enables full hardware validation of switch partitioning, local port clocking, and DMA in server/storage interconnect applications.

For engineers reviewing the 89H16NT16G2ZAHLI8 datasheet, 89H16NT16G2ZAHLI8 pinout, 89H16NT16G2ZAHLI8 application, or 89H16NT16G2ZAHLI8 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 critical for PCIe switch integration and system-level bring-up.

Technical Context

The 89H16NT16G2ZAHLI8 evaluation board implements the IDT PES16NT16G2 switch in a fully routed, test-ready platform with dual-stack PCIe lane breakout to four Mezzanine connectors and two iSAS/SATA interfaces. It supports configurable global reference clocks (100/125 MHz) sourced from SMA, onboard ICS841484 generator, or SATA connectors, and provides per-port clock selection for ports 8 and 16 via DIP switches S17/S19.

Power delivery includes five dedicated regulators: 1.0V VDDCORE, 1.0V VDDPEA, 1.0V VDDPETA, 2.5V VDDPEHA, and 3.3V VDDIO - all derived from a 12V input via Molex EPS12V 24-pin connector (J69). The board enforces strict VDDCORE-to-VDDIO ramping compliance and integrates a heatsink-fan assembly for thermal management during sustained Gen2 link training.

Key Specifications

Availability

89H16NT16G2ZAHLI8 is available at Aetrix Electronics and suitable for PCIe switch validation, server storage interconnect development, multi-root NTB testing, embedded PCIe expansion design, and high-reliability industrial backplane prototyping requiring stable component supply and long-term evaluation board continuity.

Supply support for 89H16NT16G2ZAHLI8 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 (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and PCIe connectivity solutions for datacenter, communications, and industrial systems.

The 89H16NT16G2ZAHLI8 belongs to IDT's Logan family of PCIe switch evaluation platforms - engineered specifically to accelerate validation of high-port-count, Gen2-compliant PCIe switches in real-world server, storage, and embedded infrastructure environments.

FAQ

What is the primary function of the 89H16NT16G2ZAHLI8 evaluation board?

The 89H16NT16G2ZAHLI8 evaluation board is a hardware platform built to evaluate the 89HPES16NT16G2 PCIe Gen2 16-port switch. It provides full electrical access to all 16 lanes, configurable clocking, power regulation, JTAG debugging, and PCIe mezzanine breakout - enabling engineers to validate switch configuration, link training, NTB operation, and system-level interoperability without custom PCB design.

Does the 89H16NT16G2ZAHLI8 support both common clock and separate clock PCIe topologies?

Yes, the 89H16NT16G2ZAHLI8 supports both topologies via CLKMODE[1:0] pin configuration (set by SW10[7:8]). When CLKMODE = 00 or 10, ports operate in common clock mode (SCLK = 0); when CLKMODE = 01 or 11, they advertise separate clock mode (SCLK = 1), as defined in the PCIe Base Specification 2.1 - enabling flexible clock architecture validation for upstream/downstream link partners.

Can the 89H16NT16G2ZAHLI8 be used to evaluate local port clocking on specific ports?

Yes, the 89H16NT16G2ZAHLI8 supports local port clocking evaluation for ports 8 and 16. DIP switches S19[1] and S17[1] select between SATA connectors (J62/J64) and dedicated port clock generators (U118/U120), allowing engineers to verify local reference clock injection - a key requirement for PCIe systems with independent clock domains or jitter-sensitive endpoints.

What power supply requirements does the 89H16NT16G2ZAHLI8 have?

The 89H16NT16G2ZAHLI8 requires a 12V DC input via its 24-pin Molex EPS12V connector (J69), which feeds five internal voltage regulators generating 1.0V (VDDCORE, VDDPEA, VDDPETA), 2.5V (VDDPEHA), and 3.3V (VDDIO). No external ATX PSU is needed - the board includes its own power-on switch (S1) and thermal management with integrated heatsink and fan.

Is JTAG debugging supported on the 89H16NT16G2ZAHLI8, and how is it implemented?

Yes, JTAG debugging is fully supported on the 89H16NT16G2ZAHLI8 via a standard 20-pin header (J16) directly connected to the TDI, TDO, TCK, TMS, TRST#, and SRST# pins of the 89HPES16NT16G2. This enables boundary-scan testing, register-level configuration, firmware loading, and low-level diagnostics using industry-standard tools such as Xilinx Vivado or Synopsys Platform Studio.