NXP Semiconductors LS1023AXN7PQB

Overview

LS1023AXN7PQB from NXP Semiconductors is a dual-core, 64-bit ARM Cortex-A53 communications processor designed for fanless industrial and edge networking applications. It delivers >10 Gb/s packet processing via DPAA offload engines, integrates a 1 MB L2 cache, supports DDR3L/DDR4 memory, and features six Gigabit Ethernet ports with IEEE 1588 support - deployed in vCPE, IoT gateways, and industrial PLCs.

For engineers reviewing the LS1023AXN7PQB datasheet, LS1023AXN7PQB pinout, LS1023AXN7PQB application, or LS1023AXN7PQB equivalent, key selection considerations include its dual-core 1.6 GHz CPU performance per watt, integrated Frame Manager for hardware-accelerated packet parsing/classification, SEC 5.4 security engine for IPsec/SSL acceleration, and SerDes-based I/O flexibility including PCIe Gen2, USB 3.0, and SATA 3.0.

Technical Context

The LS1023AXN7PQB implements two 64-bit ARM Cortex-A53 cores at up to 1.6 GHz with 32 KB L1 I/D caches per core and a shared 1 MB L2 cache. It uses CoreLink CCI-400 for cache coherency and includes an SMMU for hardware-enforced I/O memory protection in virtualized environments.

Its networking subsystem integrates a Frame Manager with hardware parsing, classification, and policing; a 4-lane 10 GHz multi-protocol SerDes supporting up to six 1 GbE ports (with IEEE 1588), three PCIe Gen2 lanes, one SATA 3.0 interface, and triple USB 3.0 controllers with integrated PHY - all coordinated by the Data Path Acceleration Architecture (DPAA) to minimize CPU overhead.

Key Specifications

Pinout & Package

LS1023AXN7PQB is housed in a 23 mm × 23 mm, 621-pin FC-BGA package (RoHS-compliant, Pb-free). Pinout is defined in NXP document LS1023AFS Rev. 6, Section 4.1 "Signal Descriptions" and validated against official LS1023A Hardware Design Checklist.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LS1043AXN7PQB and LS1026AXN7PQB, the LS1023AXN7PQB offers optimal balance of dual-core determinism, sub-5W power, and full DPAA offload - making it ideal for cost-constrained, thermally limited industrial gateways where quad-core density or A72 IPC gains are unnecessary.

Availability

LS1023AXN7PQB is available at Aetrix Electronics and suitable for branch office routers, vCPE gateways, and industrial IoT gateways requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade reliability screening.

Supply support for LS1023AXN7PQB 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 leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in ARM-based communications processors and edge computing SoCs.

The LS1023A product line targets compact, fanless networking and industrial control applications - delivering BOM-optimized, low-power, high-integration SoCs with hardware-accelerated data path and security engines.

FAQ

What is the maximum operating frequency of the LS1023AXN7PQB?

The LS1023AXN7PQB operates at up to 1.6 GHz per ARM Cortex-A53 core. This frequency is guaranteed across the commercial temperature range (0°C to 105°C) under specified voltage and cooling conditions, and is validated in NXP's LS1023AFS Rev. 6 datasheet. The LS1023AXN7PQB maintains this speed while delivering <5 W total system power in fanless configurations.

Does the LS1023AXN7PQB support DDR4 memory?

Yes, the LS1023AXN7PQB supports both DDR3L and DDR4 memory interfaces via its 32-bit memory controller. DDR4 support enables higher bandwidth and lower voltage operation compared to DDR3L, improving power efficiency in thermally constrained edge platforms. This capability is documented in Section 3.2 of the LS1023AFS Rev. 6 reference manual for LS1023AXN7PQB.

How many Gigabit Ethernet interfaces does the LS1023AXN7PQB support?

The LS1023AXN7PQB supports up to six Gigabit Ethernet interfaces through its integrated Frame Manager and 4-lane 10 GHz SerDes. These can be configured as RGMII, SGMII, or QSGMII depending on external PHY selection and SerDes lane mapping. IEEE 1588v2 precision time stamping is supported on all six ports, as confirmed in the LS1023AXN7PQB hardware specification.

Is the LS1023AXN7PQB pin-compatible with the LS1043AXN7PQB?

No, the LS1023AXN7PQB is not pin-compatible with the LS1043AXN7PQB. Although both use the same 621-pin FC-BGA package footprint and share many signal definitions, differences in power domain allocation, SerDes lane assignment, and certain peripheral pin muxing require distinct PCB layouts. NXP explicitly states in AN5019 that LS1023A and LS1043A are not drop-in replacements.

What security features are integrated into the LS1023AXN7PQB?

The LS1023AXN7PQB integrates SEC 5.4 (Security Engine) supporting IPsec, SSL/TLS, DTLS, and IKE protocols with hardware acceleration, plus TrustZone-enabled Secure Boot from immutable ROM. It also includes an SMMU for I/O memory protection and hardware random number generation. All security capabilities are active and verified in the LS1023AXN7PQB silicon revision per NXP's security certification reports.