NXP Semiconductors T4081NSN7QTB

Overview

T4081NSN7QTB from NXP Semiconductors is a quad-core, dual-threaded Power Architecture e6500-based communications processor delivering 8 virtual cores at up to 1.8 GHz, with 2 MB L2 cache, dual 64-bit DDR3L controllers (1866 MT/s), and integrated DPAA accelerators for packet parsing, crypto (SEC 5.0), and pattern matching (PME 2.0). It targets control-and-data-plane convergence in enterprise routers and NFV infrastructure.

For engineers reviewing the T4081NSN7QTB datasheet, T4081NSN7QTB pinout, T4081NSN7QTB application, or T4081NSN7QTB equivalent, key selection criteria include its 24 SerDes lanes (supporting SGMII/QSGMII/PCIe 3.0/XFI), dual-threaded e6500 core architecture, hardware-assisted virtualization (hypervisor privilege level + PAMUv2), and DPAA-accelerated 2×10 GbE + 10×1 GbE Ethernet configuration.

Technical Context

The T4081NSN7QTB implements four dual-threaded e6500 cores clustered with shared 2 MB L2 cache and AltiVec SIMD engines, operating up to 1.8 GHz with 7 DMIPS/MHz per core. Its CoreNet coherency fabric delivers 1.6 Tb/s coherent read bandwidth and supports hierarchical QoS scheduling via QMAN 1.1.

It integrates two DDR3L memory controllers (1866 MT/s, ECC-capable), two PCIe 3.0 controllers (each supporting SR-IOV with 2 PFs/128 VFs), and dual Frame Managers enabling up to 2×10 GbE + 10×1 GbE MACs. The DPAA offloads packet classification, crypto (SEC 5.0 @ 40 Gbit/s), and compression (DCE 1.0 @ 20 Gbit/s) from CPU cores.

Key Specifications

Pinout & Package

T4081NSN7QTB is housed in a 23 mm × 23 mm, 780-pin FC-BGA package with 1.0 mm ball pitch, designed for high-density embedded compute modules requiring thermal and signal integrity optimization.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multicore communications processor applications.

Compared with T4080NSN7QTB, T4081NSN7QTB offers validated thermal margin for sustained 1.8 GHz operation in convection-cooled enclosures, while LX2160A trades Power Architecture determinism for ARM scalability and broader open-source toolchain support - making T4081NSN7QTB optimal for continuity in existing QorIQ-based designs.

Availability

T4081NSN7QTB is available at Aetrix Electronics and suitable for enterprise routers, NFV infrastructure nodes, and ruggedized network appliances requiring stable component supply across extended product lifecycles.

Supply support for T4081NSN7QTB 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and networking markets.

The T4 family - including T4081NSN7QTB - was engineered for high-performance, power-efficient control-and-data-plane convergence in carrier-grade and enterprise networking equipment, leveraging Power Architecture e6500 cores and integrated DPAA hardware acceleration.

FAQ

What is the maximum operating frequency of the T4081NSN7QTB?

The T4081NSN7QTB operates at up to 1.8 GHz across all four e6500 cores under thermal and voltage specifications defined in the official NXP datasheet. This frequency is sustained in typical industrial ambient conditions (≤85°C case temperature) with appropriate PCB thermal design and 1.0 V core supply. Frequency scaling is managed via dynamic voltage and frequency scaling (DVFS) firmware, and T4081NSN7QTB achieves 7 DMIPS/MHz per core at this rate.

Does the T4081NSN7QTB support DDR4 memory?

No, the T4081NSN7QTB supports only DDR3 and DDR3L memory up to 1866 MT/s, with built-in ECC and interleaving support. It does not include DDR4 controller logic or PHY compatibility. Systems requiring DDR4 must use alternative SoCs such as the LX2160A or later NXP Layerscape processors. The T4081NSN7QTB's memory subsystem is optimized for low-power DDR3L operation at 1.35 V, aligning with its embedded power envelope.

Is the T4081NSN7QTB pin-compatible with the T4240 or T4160?

Yes, the T4081NSN7QTB shares the same 780-pin FC-BGA package footprint and pinout as the T4240 and T4160, enabling mechanical and layout compatibility across the T4 family. However, not all signals are functionally active - for example, T4081NSN7QTB exposes only 24 SerDes lanes versus 36 on the T4240, and only two PCIe controllers versus four. System designers must validate signal mapping and disable unused lanes in software.

What virtualization software is certified for the T4081NSN7QTB?

KVM-based Linux virtualization, Enea LINUXTM, Green Hills INTEGRITY, Mentor Embedded Linux, and Wind River VxWorks are all certified and supported on the T4081NSN7QTB. These leverage its hardware virtualization features - including hypervisor privilege level, PAMUv2 IOMMU, and vMPIC - to deliver secure, low-overhead guest isolation. NXP provides BSPs and reference hypervisor images specifically validated for T4081NSN7QTB.

How does the DPAA in the T4081NSN7QTB improve packet processing performance?

The Data Path Acceleration Architecture (DPAA) in the T4081NSN7QTB offloads packet parsing, classification, queue management, crypto, and pattern matching from CPU cores - achieving up to 50 Gbit/s frame processing without software interrupt overhead. By distributing work via QMAN's multilevel scheduler and buffering via BMAN, DPAA enables deterministic latency and scalable throughput, allowing the T4081NSN7QTB to sustain line-rate 10 GbE forwarding while running complex control-plane software concurrently.