Analog Devices Inc. ADSP-21562KSWZ4

Overview

ADSP-21562KSWZ4 from Analog Devices is a SHARC+ single-core floating-point DSP engineered for high-fidelity audio and real-time signal processing in automotive and professional audio systems. It operates at 400 MHz, integrates 5 Mb L1 SRAM with parity, supports 32-/40-/64-bit floating-point arithmetic, and features dual 2×4 ASRCs and 2×2 precision clock generators - enabling low-latency sample rate conversion and timing-critical audio routing in head units and ANC/RNC systems.

For engineers reviewing the ADSP-21562KSWZ4 datasheet, ADSP-21562KSWZ4 pinout, ADSP-21562KSWZ4 application, or ADSP-21562KSWZ4 equivalent, this page delivers verified core frequency, memory configuration, peripheral set (I²C, SPI, UART, DAI), safety features (AEC-Q100), and package-specific signal assignments - all confirmed for the KSWZ4 variant's 120-lead LQFP_EP package.

Technical Context

The ADSP-21562KSWZ4 implements a SIMD SHARC+ core with instruction-set compatibility to prior SHARC generations, supporting IEEE 32/40/64-bit floating-point and 32-bit fixed-point operations. Its memory subsystem includes 5 Mb L1 SRAM (configurable as SRAM or cache) and 256 kB L2 SRAM with ECC - accessed via dedicated DM/PM buses enabling simultaneous instruction fetch and dual data transfers per cycle.

System-level integration includes a 16-bit DDR3/DDR3L interface (L3), hardware FIR/IIR accelerators running at core speed, crypto engines for secure boot, and AEC-Q100 qualification. Peripherals comprise 4× I²C, 1× SPI + 2× Quad SPI, 2× UARTs, 2× DAI, 2× S/PDIF Rx/Tx, and 22 GPIO pins - all mapped to the 120-lead LQFP_EP package with 0.4 mm pitch.

Key Specifications

Pinout & Package

ADSP-21562KSWZ4 is housed in a 120-lead LQFP_EP package (0.4 mm pitch) with exposed thermal pad. Pin assignments are defined in Analog Devices' Rev. D datasheet, Section "120-Lead LQFP Lead Assignments" (pp. 96–98), including multiplexed GPIO, DAI, SPI, UART, and clock signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21562KSWZ4, the ADSP-21563KSWZ6 offers 50% higher core speed and doubled I²C/UART count for complex infotainment gateways, while ADSP-21565KSWZ8 adds DDR3L support and Link Ports - enabling memory expansion and multi-DSP synchronization not possible with the base ADSP-21562KSWZ4.

Availability

ADSP-21562KSWZ4 is available at Aetrix Electronics and suitable for automotive infotainment, active noise cancellation, and professional audio equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADSP-21562KSWZ4 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

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and DSP technology, headquartered in Wilmington, MA, with design centers worldwide and a 50+ year heritage in precision signal processing.

The ADSP-21562KSWZ4 belongs to the SHARC+ family - designed specifically for deterministic, low-latency audio and industrial signal processing where floating-point accuracy, on-chip memory bandwidth, and AEC-Q100 reliability are mandatory.

FAQ

What is the maximum operating frequency of the ADSP-21562KSWZ4?

The ADSP-21562KSWZ4 is rated for a maximum core frequency of 400 MHz. This speed grade is confirmed in Table 1 of the Rev. D datasheet and defines its real-time processing capability for audio algorithms such as multi-band compressors and adaptive filters. The ADSP-21562KSWZ4 achieves this frequency under specified voltage (1.1 V core) and temperature (−40°C to +105°C) conditions with appropriate thermal management.

Does the ADSP-21562KSWZ4 support secure boot and cryptographic acceleration?

Yes, the ADSP-21562KSWZ4 includes a dedicated security engine with hardware accelerators for AES-128/256, SHA-256, and RSA key generation, plus 7 kB of one-time programmable (OTP) memory. These features enable fast, tamper-resistant secure boot - verified by Analog Devices' documentation and required for automotive functional safety compliance in head unit designs using ADSP-21562KSWZ4.

Which package does the ADSP-21562KSWZ4 use, and what are its thermal characteristics?

The ADSP-21562KSWZ4 uses a 120-lead LQFP_EP package with an exposed thermal pad (0.4 mm pitch, RoHS-compliant). Its thermal resistance θ_JA is 32.5°C/W, enabling operation up to +105°C ambient when mounted on a 4-layer PCB with ≥2 in² copper pour under the EP pad - as validated in the "Outline Dimensions" and "Surface-Mount Design" sections of the ADSP-21562KSWZ4 datasheet.

Can the ADSP-21562KSWZ4 interface directly with DDR3 memory?

No, the ADSP-21562KSWZ4 does not include a DDR3/DDR3L controller. That feature is present only in higher variants (ADSP-21563/21565/21566/21567/21569) per Table 1. The ADSP-21562KSWZ4 relies on its 256 kB L2 SRAM with ECC and 5 Mb L1 SRAM for on-chip data storage - sufficient for most standalone audio processing tasks without external DRAM.

How many ASRCs and precision clock generators are integrated in the ADSP-21562KSWZ4?

The ADSP-21562KSWZ4 integrates two 2×4 ASRC (asynchronous sample rate converter) pairs and two 2×2 precision clock generators - matching the full-feature ADSP-21569 configuration for audio timing flexibility. This allows independent sample rate conversion between up to eight audio streams and jitter-free clock synthesis for multiple DACs/ADCs, as documented in the "Additional Features" section of the ADSP-21562KSWZ4 datasheet.