NXP Semiconductors LS1023AXN7KQB

Overview

LS1023AXN7KQB 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 acceleration, integrates a 1 MB L2 cache, supports DDR3L/DDR4 memory, and features a 4-lane 10 GHz SerDes with up to six Gigabit Ethernet ports and IEEE 1588 timing support.

For engineers reviewing the LS1023AXN7KQB datasheet, LS1023AXN7KQB pinout, LS1023AXN7KQB application, or LS1023AXN7KQB equivalent, key selection considerations include its dual-core 64-bit ARM architecture, integrated Frame Manager for hardware packet parsing/classification, SEC 5.4 security engine, QUICC Engine for legacy TDM/HDLC/PROFIBUS, and support for USB 3.0, PCIe Gen2, SATA 3.0, and QuadSPI.

Technical Context

The LS1023AXN7KQB implements two 64-bit ARM Cortex-A53 cores clocked up to 1.2 GHz (per core), backed by a unified 1 MB L2 cache and CoreLink CCI-400 coherent interconnect with SMMU for I/O virtualization. Its Data Path Acceleration Architecture (DPAA) includes Frame Manager, Queue Manager, and Buffer Manager for offloading packet classification, distribution, and policing from CPU cores.

Networking is enabled via a 4-lane 10 GHz multi-protocol SerDes supporting up to six 1 GbE interfaces with IEEE 1588 v2 hardware timestamping, three PCIe Gen2 lanes, one SATA 3.0 port, and triple USB 3.0 controllers with integrated PHY. Security functions are handled by SEC 5.4 supporting IPsec, SSL/TLS, DTLS, IKE, and XOR acceleration for RAID 5.

Key Specifications

Pinout & Package

LS1023AXN7KQB 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 Figure 4-1 "Ball Map". Key functional groups include DDR3L/4 address/data/control, SerDes lanes (SGMII/XFI), PCIe differential pairs, USB 3.0 SuperSpeed lanes, SATA TX/RX, QuadSPI, IFC, SD/eMMC, UART, I²C, SPI, GPIO, and power/ground balls distributed per thermal and signal integrity guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LS1043AXE7KQB, LS1023AXN7KQB trades core count and peak throughput for lower power and smaller footprint - ideal for space-constrained, fanless deployments. Against i.MX 8M Plus, LS1023AXN7KQB provides hardware-accelerated packet processing and industrial protocol engines absent in the multimedia-focused i.MX family.

Availability

LS1023AXN7KQB is available at Aetrix Electronics and suitable for branch office routers, industrial PLC controllers, vCPE gateways, and multi-protocol IoT gateways requiring stable component supply, long-term lifecycle support, and validated thermal performance in fanless enclosures.

Supply support for LS1023AXN7KQB 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 processors and networking IP.

The LS1023A belongs to NXP's QorIQ Layerscape family - purpose-built for small-form-factor, fanless networking and industrial infrastructure where BOM optimization, power efficiency, and hardware-accelerated packet processing are primary design requirements.

FAQ

What is the maximum operating frequency of the LS1023AXN7KQB CPU cores?

The LS1023AXN7KQB integrates two ARM Cortex-A53 cores, each capable of operating at up to 1.2 GHz. This frequency is guaranteed across the commercial temperature range (0°C to 105°C) under specified voltage and thermal conditions per NXP's LS1023AFS Rev 6 datasheet. The actual sustained frequency depends on board-level thermal design and power delivery stability.

Does the LS1023AXN7KQB support DDR4 memory?

Yes, the LS1023AXN7KQB supports both DDR3L and DDR4 memory via its 32-bit memory controller. DDR4 support enables higher bandwidth and lower voltage operation (1.2 V), improving power efficiency in thermally constrained fanless systems. Configuration is done through RCW (Reset Configuration Word) settings and requires compatible DDR4 PHY initialization sequences.

How many Gigabit Ethernet interfaces does the LS1023AXN7KQB support?

The LS1023AXN7KQB supports up to six Gigabit Ethernet interfaces via its 4-lane 10 GHz SerDes, configured as SGMII or RGMII. Each interface includes hardware IEEE 1588 v2 timestamping and is managed by the integrated Frame Manager for classification, policing, and buffer allocation - enabling precise time synchronization in industrial control and telecom edge applications.

Is the LS1023AXN7KQB pin-compatible with the LS1043A series?

No, the LS1023AXN7KQB is not pin-compatible with LS1043A-series processors. Although both share the same 621-ball FC-BGA package outline and many signal groupings, ball assignments for SerDes lanes, PCIe, and certain power domains differ. Migration requires PCB redesign; refer to NXP's LS1023A and LS1043A package drawings for mechanical and electrical compatibility verification.

What security features are integrated into the LS1023AXN7KQB?

The LS1023AXN7KQB includes SEC 5.4 for cryptographic acceleration (IPsec, SSL/TLS, DTLS, IKE), TrustZone-enabled secure boot with SHA-256/RSA-2048 validation, and SMMU-based memory isolation for virtualized environments. These features collectively enable secure firmware updates, encrypted WAN tunnels, and hardware-enforced separation between trusted and untrusted software domains on the LS1023AXN7KQB.