Renesas 89H12NT12G2ZAHLI

Overview

89H12NT12G2ZAHLI from IDT is an evaluation board (EB-LOGAN-19) designed for the PES12NT12G2 PCIe 2.1 Gen2 12-lane, 12-port switch - supporting x1/x2/x4 port configurations, 5 GT/s SerDes speed, automatic lane reversal, and local port clocking. It enables hardware validation of NTB, DMA, and multi-partition switching in server and storage interconnect applications.

For engineers reviewing the 89H12NT12G2ZAHLI datasheet, 89H12NT12G2ZAHLI pinout, 89H12NT12G2ZAHLI application, or 89H12NT12G2ZAHLI equivalent, this page delivers verified board-level specifications, clocking configuration options, power sequencing requirements, PCIe slot breakout capabilities, and jumper/DIP-switch controlled boot modes per IDT's official EB-LOGAN-19 Evaluation Board Manual (Rev. Feb 2011).

Technical Context

The 89H12NT12G2ZAHLI evaluation board implements full hardware access to the PES12NT12G2 switch, including all 12 PCIe lanes routed to two Mezzanine connectors and two SAS connectors - enabling flexible link partner testing via IDT-provided bifurcated/merged mezzanine cards, iSAS-to-SATA breakout cables, and PCIe edge adapters. It supports both common-clock and local-port clocking modes via configurable jumpers (J18/J19), DIP switches (S10/S17/S19), and CLKMODE[1:0] boot vector settings.

Power delivery includes five dedicated regulators generating VDDCORE (1.0 V), VDDPEA (1.0 V), VDDPETA (1.0 V), VDDPEHA (2.5 V), and VDDIO (3.3 V) from a 12 V input, with strict VDDCORE ramping ≤1.0 V below VDDIO. Clock sources include dual differential global reference clocks (100/125 MHz selectable), onboard ICS841484 generator (100 MHz default), and per-port clock muxes for ports 8 and 16.

Key Specifications

Availability

89H12NT12G2ZAHLI is available at Aetrix Electronics and suitable for PCIe switch validation, server backplane prototyping, storage interconnect development, and NTB-based multi-root system design requiring stable component supply and traceable sourcing.

Supply support for 89H12NT12G2ZAHLI 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 PCIe interconnect solutions, acquired by Renesas Electronics in 2019.

The 89H12NT12G2ZAHLI belongs to IDT's PCI Express Inter-Domain Switch evaluation platform family, engineered specifically to accelerate validation of high-density, low-latency PCIe switching in enterprise servers and storage systems.

FAQ

What is the primary function of the 89H12NT12G2ZAHLI evaluation board?

The 89H12NT12G2ZAHLI is an IDT evaluation board (EB-LOGAN-19 variant) built around the PES12NT12G2 PCIe 2.1 Gen2 12-lane, 12-port switch. Its purpose is hardware-level validation of switch features including NTB, DMA, multi-partition mode, local port clocking, and PCIe topology flexibility - not signal generation, power conversion, or logic control.

Does the 89H12NT12G2ZAHLI include the PES12NT12G2 switch IC mounted on-board?

Yes, the 89H12NT12G2ZAHLI evaluation board has the PES12NT12G2 PCIe switch IC physically populated on the main board. The board provides full electrical access to all 12 lanes, reference clock inputs, SMBus interfaces, JTAG pins, and power domains as defined in the IDT PES12NT12G2 datasheet and EB-LOGAN-19 manual.

What clocking options does the 89H12NT12G2ZAHLI support for the PES12NT12G2 device?

The 89H12NT12G2ZAHLI supports three clock source types: (1) dual global differential reference clocks (100/125 MHz selectable via SW10), sourced from SMA connectors, clock buffer U51, or SATA connectors; (2) onboard ICS841484 generator (U49) fixed at 100 MHz; and (3) local port clocking for ports 8 and 16 via dedicated muxes (U118/U120), with frequency strictly 100 MHz.

How is power delivered and sequenced on the 89H12NT12G2ZAHLI board?

Power enters via a 24-pin EPS12V Molex connector (J69) supplying +12 V, +5 V, and +3.3 V. A DC-DC converter generates 3.3 V for clock buffers and logic, then feeds five dedicated regulators producing VDDCORE (1.0 V), VDDIO (3.3 V), VDDPEA (1.0 V), VDDPETA (1.0 V), and VDDPEHA (2.5 V). Critical sequencing requires VDDCORE to remain at least 1.0 V below VDDIO during ramp-up.

Can the 89H12NT12G2ZAHLI be used to evaluate multi-root NTB functionality?

Yes - the 89H12NT12G2ZAHLI supports NTB (Non-Transparent Bridge) mode as part of the PES12NT12G2's feature set. Up to eight ports can be configured as NTB ports, and the board provides full SMBus and JTAG access required to program NTB registers, configure address translation windows, and validate peer-to-peer memory access across root complexes.