NXP Semiconductors T4081NSN7NQB

Overview

T4081NSN7NQB from NXP Semiconductors is a quad-core, dual-threaded Power Architecture e6500-based communications processor with 4 virtual cores, 2 MB L2 cache, dual 64-bit DDR3L memory controllers supporting up to 1866 MT/s, and integrated Data Path Acceleration Architecture (DPAA) for packet processing in networking control and data plane applications.

For engineers reviewing the T4081NSN7NQB datasheet, T4081NSN7NQB pinout, T4081NSN7NQB application, or T4081NSN7NQB equivalent, key selection criteria include its 24 SerDes lanes, support for two 10 GbE MACs and thirteen 1 GbE MACs, PCIe 2.0/3.0 controller count, hardware virtualization features, and CoreNet coherency fabric bandwidth requirements in carrier-grade router and NFV platform designs.

Technical Context

The T4081NSN7NQB implements four dual-threaded e6500 cores arranged in one cluster sharing 2 MB L2 cache, each core delivering up to 1.8 GHz operation and 7 DMIPS/MHz performance with AltiVec SIMD support. It integrates CoreNet Platform Cache (1 MB), two DDR3L controllers with ECC, and DPAA accelerators including FMAN, QMAN, BMAN, SEC 5.0, PME 2.0, and DCE 1.0.

Networking subsystems include dual Frame Managers supporting up to 2 × 10 GbE + 10 × 1 GbE MACs, 24 SerDes lanes configurable for SGMII/QSGMII/XAUI/PCIe/Interlaken-LA/sRIO, three PCIe controllers (2.0/3.0), two SATA 2.0, two USB 2.0, and SRIO 2.0 interfaces - all coordinated via the CoreNet coherent interconnect fabric with 1.6 Tb/s read bandwidth.

Key Specifications

Pinout & Package

T4081NSN7NQB is housed in a 29×29 mm, 783-pin FC-BGA package (RoHS-compliant, Pb-free) with thermal lid and standard 1.0 mm ball pitch. Pin assignment follows NXP's T4 family mechanical and thermal design guidelines for high-density routing and signal integrity in multi-layer PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with T4160NSN7NQB, T4081NSN7NQB offers lower power and simpler thermal management for cost-sensitive edge routers; compared with LS2088A, it retains Power Architecture toolchain continuity and AltiVec-accelerated DSP workloads but lacks DDR4 and newer DPAA2 enhancements.

Availability

T4081NSN7NQB is available at Aetrix Electronics and suitable for carrier-grade edge routers, NFV platforms, unified threat management appliances, and ruggedized military communications nodes requiring stable component supply and long-term industrial lifecycle support.

Supply support for T4081NSN7NQB 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, IoT, and communications markets.

The T4081NSN7NQB belongs to NXP's QorIQ T series of multicore communications processors, designed specifically for high-performance, power-efficient control and data plane processing in service provider networking, enterprise infrastructure, and defense-grade embedded systems.

FAQ

What is the maximum operating frequency of the T4081NSN7NQB?

The T4081NSN7NQB operates at up to 1.8 GHz per e6500 core, with dual-threaded execution enabled across all four physical cores. This frequency is validated under industrial temperature conditions (–40°C to +105°C) with appropriate thermal management. The T4081NSN7NQB achieves 7 DMIPS/MHz per core, delivering consistent performance for real-time packet processing and control-plane tasks without throttling in thermally constrained environments.

Does the T4081NSN7NQB support hardware virtualization?

Yes, the T4081NSN7NQB includes comprehensive hardware virtualization support: an extra hypervisor privilege level, logical-to-real address translation acceleration, PAMUv2 IOMMU for DMA protection, vMPIC for virtualized interrupt handling, and vDMA for user-level direct memory access. These features enable secure, high-performance virtual machine isolation in KVM and commercial hypervisors - critical for deploying multiple network functions on a single T4081NSN7NQB-based platform.

What memory technologies does the T4081NSN7NQB support?

The T4081NSN7NQB supports DDR3L SDRAM only, with two independent 64-bit controllers rated up to 1866 MT/s. Each controller supports ECC, interleaving, and configurable burst lengths. It does not support DDR4, LPDDR, or GDDR memory types. Memory initialization and training are handled by the integrated memory controller with built-in calibration logic, and the T4081NSN7NQB requires external termination resistors and matched trace routing per JEDEC DDR3L specifications.

How many 10 Gigabit Ethernet interfaces can the T4081NSN7NQB support?

The T4081NSN7NQB supports up to two 10 Gigabit Ethernet MACs via its dual Frame Managers. Each FMAN connects to external PHYs using SGMII, XAUI, or 10Gbase-KR interfaces over its 24 SerDes lanes. The T4081NSN7NQB does not integrate 10 GbE PHYs - they must be implemented externally - and the maximum aggregate bandwidth across both 10 GbE ports is 20 Gb/s full-duplex, subject to SerDes lane allocation and PHY compatibility.

Is the T4081NSN7NQB pin-compatible with other QorIQ T4 family processors?

Yes, the T4081NSN7NQB shares the same 783-pin FC-BGA package and pinout with the T4160NSN7NQB and T4240NSN7NQB, enabling scalable design reuse across the T4 family. This pin compatibility allows migration from 4- to 8- or 12-core variants without PCB redesign. However, thermal and power delivery requirements differ: the T4081NSN7NQB draws less current and generates less heat than higher-core-count variants, permitting simplified cooling in space-constrained applications.