Renesas 89H24NT6AG2ZAHLG8

Overview

89H24NT6AG2ZAHLG8 from IDT is a 24-lane, 6-port PCI Express Gen2 system interconnect switch with Non-Transparent Bridging (NTB) and Switch Partitioning capabilities. It delivers up to 24 GBps switching capacity, supports 5.0 GT/s link speed per lane, and operates in servers, storage systems, and intelligent I/O subsystems requiring multi-domain peer-to-peer communication.

For engineers reviewing the 89H24NT6AG2ZAHLG8 datasheet, 89H24NT6AG2ZAHLG8 pinout, 89H24NT6AG2ZAHLG8 application, or 89H24NT6AG2ZAHLG8 equivalent, key selection considerations include NTB endpoint count (up to 6), partitioned switch configuration flexibility, PCIe Gen2 compliance, integrated DMA controllers, and 484-ball Flip Chip BGA packaging.

Technical Context

The 89H24NT6AG2ZAHLG8 implements a Combined Input Output Queued (CIOQ) switch core with large buffers and low-latency cut-through forwarding. Its architecture supports six independent switch partitions, each configurable with upstream/downstream/non-transparent bridge roles and dynamic port migration between partitions.

It integrates dual SMBus interfaces (master and slave), IEEE 1149.1/1149.6 JTAG support, on-die temperature sensing (0–127.5°C), and SerDes with per-lane de-emphasis, receive equalization, and drive strength control - all compliant with PCI Express Base Specification 2.1.

Key Specifications

Pinout & Package

89H24NT6AG2ZAHLG8 is housed in a 23 mm × 23 mm 484-ball Flip Chip BGA package with 1.0 mm ball pitch. Pin functions include 24 differential PCIe lanes across six ports (Port 0, 2, 4, 6, 8, 12), dual SMBus interfaces (master/slave), 9 GPIOs with alternate functions (e.g., partition reset, link status), reference clock inputs (global and per-port), JTAG test pins, and dedicated power/ground/resistor pins for SerDes calibration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PCIe Gen2 switching applications.

Compared with 89H24NT6AG2ZAHLG8, the ZCBLG8 variant ensures RoHS compliance without altering thermal or signal integrity behavior, while the ZAHLG version offers identical functionality in tray packaging - both preserve full NTB, partitioning, and DMA capabilities without layout or firmware changes.

Availability

89H24NT6AG2ZAHLG8 is available at Aetrix Electronics and suitable for server backplanes, intelligent storage controllers, communications infrastructure, and embedded multi-processor systems requiring stable component supply and long-term lifecycle support.

Supply support for 89H24NT6AG2ZAHLG8 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

IDT (Integrated Device Technology, Inc.) is a fabless semiconductor company specializing in high-performance timing, memory interface, RF, and interconnect solutions, acquired by Renesas Electronics in 2019.

The 89H24NT6AG2ZAHLG8 belongs to IDT's PCI Express switching portfolio, designed specifically for high-throughput, multi-domain system interconnects in enterprise and communications infrastructure.

FAQ

What is the primary function of the 89H24NT6AG2ZAHLG8 in a PCIe system?

The 89H24NT6AG2ZAHLG8 functions as a 24-lane, 6-port PCI Express Gen2 system interconnect switch with integrated Non-Transparent Bridging (NTB) and Switch Partitioning. It enables secure, low-latency communication between multiple PCIe domains - such as separate CPU hosts or processor partitions - without requiring software mediation or shared memory, making it essential for multi-host server, storage, and embedded applications.

Does the 89H24NT6AG2ZAHLG8 support PCIe Gen3 or higher speeds?

No, the 89H24NT6AG2ZAHLG8 is specified exclusively for PCIe Gen1 (2.5 GT/s) and Gen2 (5.0 GT/s) operation. It does not support Gen3 (8.0 GT/s) or later generations. Its SerDes and protocol logic are compliant with PCI Express Base Specification 2.1, and no Gen3 capability is documented in the official datasheet or feature set.

How many independent switch partitions can the 89H24NT6AG2ZAHLG8 support?

The 89H24NT6AG2ZAHLG8 supports up to 6 fully independent switch partitions within a single device. Each partition operates as a logically isolated switch with configurable downstream port numbering, dynamic port reconfiguration, and movable upstream ports - enabling true hardware-level isolation for virtualized or multi-host environments.

What power supply voltages does the 89H24NT6AG2ZAHLG8 require?

The 89H24NT6AG2ZAHLG8 requires three distinct power supply rails: 1.0 V for core logic (VDDCORE), 2.5 V for high-power SerDes analog circuitry (VDDPEHA), and 3.3 V for LVTTL I/O buffers (VDDI/O). Additionally, dedicated 1.0 V supplies are needed for SerDes analog (VDDPEA) and transmitter analog (VDDPETA) sections, as specified in the power pin listing.

Is the 89H24NT6AG2ZAHLG8 pin-compatible with other members of the IDT PES24NT6AG2 family?

Yes, the 89H24NT6AG2ZAHLG8 shares identical pinout, package, and electrical characteristics with other variants in the PES24NT6AG2 family (e.g., 89H24NT6AG2ZCBLG8, 89H24NT6AG2ZAHLG). Differences are limited to packaging format (tray vs. tape-and-reel) and surface finish (lead-free vs. leaded), not pin assignment or signal functionality.