Renesas 89H16NT16G2ZAHL

Overview

89H16NT16G2ZAHL from Integrated Device Technology (IDT) is an evaluation board designed for the 89HPES16NT16G2 PCIe Gen2 16-lane, 16-port inter-domain switch. It supports PCIe Base Specification 2.1 compliance, x1/x2/x4/x8 link width negotiation, automatic lane reversal, and NTB multi-root configuration. The board enables full hardware validation in server and storage interconnect applications.

For engineers reviewing the 89H16NT16G2ZAHL datasheet, 89H16NT16G2ZAHL pinout, 89H16NT16G2ZAHL application, or 89H16NT16G2ZAHL equivalent, this page provides verified technical context, power sequencing details, clock configuration options, SMBus interface mapping, and jumper-based boot mode selection - all specific to the EB-LOGAN-19 platform supporting the PES16NT16G2 device.

Technical Context

The 89H16NT16G2ZAHL evaluation board implements the IDT PES16NT16G2 switch in a fully routable PCIe Gen2 topology with 16 lanes distributed across two mezzanine connectors and SAS interfaces. It supports common clock, non-common clock, and local port clocking modes via configurable jumpers and DIP switches.

Power delivery includes five dedicated regulators: 1.0V core (VDDCORE), 1.0V PCIe analog (VDDPEA), 1.0V PCIe transmitter analog (VDDPETA), 2.5V PCIe analog (VDDPEHA), and 3.3V I/O (VDDIO), with strict VDDCORE-to-VDDIO ramping requirements. Clock sources include SMA inputs, onboard ICS841484 generator (100 MHz default), and SATA-derived references.

Key Specifications

Availability

89H16NT16G2ZAHL is available at Aetrix Electronics and suitable for PCIe switch validation, server interconnect prototyping, storage subsystem testing, and NTB-based multi-root system development requiring stable component supply and long-term evaluation platform support.

Supply support for 89H16NT16G2ZAHL 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) was a fabless semiconductor company specializing in timing, memory interface, RF, and PCIe interconnect solutions before its acquisition by Renesas Electronics in 2019. IDT pioneered high-performance PCI Express switching architectures for enterprise infrastructure.

The 89H16NT16G2ZAHL belongs to IDT's Logan-series evaluation platforms, purpose-built to validate the PESxxNTxxG2 family of PCIe Gen2 switches in real-world topologies including fan-out, peer-to-peer, and NTB configurations for data center and storage systems.

FAQ

What is the primary function of the 89H16NT16G2ZAHL evaluation board?

The 89H16NT16G2ZAHL evaluation board is a hardware platform designed exclusively for evaluating the 89HPES16NT16G2 PCIe Gen2 16-port, 16-lane inter-domain switch. It provides full electrical and mechanical access to all 16 lanes via mezzanine and SAS connectors, supports configurable clocking modes (common/non-common/local), and enables validation of NTB, DMA, and partitioned switching behavior in server and storage environments. The 89H16NT16G2ZAHL does not contain the switch IC itself but hosts it as the device under test.

Which PCIe specification revision does the 89H16NT16G2ZAHL support through its target device?

The 89H16NT16G2ZAHL supports PCIe Base Specification Revision 2.1 via the 89HPES16NT16G2 switch it evaluates. This includes Gen2 signaling at 5 GT/s, automatic lane reversal and polarity inversion, per-port link width negotiation (x1/x2/x4/x8), and up to 2048-byte maximum payload size. The 89H16NT16G2ZAHL board implements all required reference clock routing, power regulation, and reset signaling to meet PCIe 2.1 electrical and protocol conformance requirements.

How is clocking configured on the 89H16NT16G2ZAHL evaluation board?

Clocking on the 89H16NT16G2ZAHL is configurable via jumpers (J18/J19), DIP switches (S10/S17/S19), and onboard clock generators. Global reference clocks (100/125 MHz) can be sourced from SMA connectors, the ICS841484 onboard generator (U49), or SATA connectors. Local port clocks for ports 8 and 16 are selectable between SATA inputs or dedicated clock muxes (U118/U120). The 89H16NT16G2ZAHL supports common clock, non-common clock, and local port clocking modes controlled by CLKMODE[1:0] pins in the boot vector.

What power supply requirements does the 89H16NT16G2ZAHL have?

The 89H16NT16G2ZAHL requires a 12V DC input via the 24-pin EPS12V Molex connector (J69). Onboard DC-DC converters generate five critical voltages: VDDCORE (1.0V), VDDIO (3.3V), VDDPEA (1.0V), VDDPETA (1.0V), and VDDPEHA (2.5V). During power-up, VDDCORE must remain at least 1.0V below VDDIO at all times - a requirement enforced by the regulator sequencing on the 89H16NT16G2ZAHL board.

Does the 89H16NT16G2ZAHL include JTAG and SMBus interfaces?

Yes, the 89H16NT16G2ZAHL includes both JTAG and SMBus interfaces. A standard 14-pin JTAG header connects directly to the PES16NT16G2's TAP controller for boundary scan and debug. It also features an SMBus Slave interface (4-pin header) for host-side monitoring and control, plus an SMBus Master interface routed to serial EEPROMs via an I/O expander - enabling boot configuration storage and runtime register access for the 89H16NT16G2ZAHL platform.