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Home > Products > Integrated Circuits (ICs) > Embedded > DSP (Digital Signal Processors)

Analog Devices Inc. ADSP-21369KSWZ-5A

Name: ADSP-21369KSWZ-5A
Brand: Analog Devices Inc.
SKU: ADSP-21369KSWZ-5A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADSP-21369KSWZ-5A

Manufacturer:: Analog Devices Inc.

Category:: DSP (Digital Signal Processors)

Package:: 208-LQFP Exposed Pad

Datasheet:: ADSP-21369KSWZ-5A.pdf

Description:: IC DSP 32BIT 366MHZ 208LQFP

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Product details

Overview

ADSP-21369KSWZ-5A from Analog Devices is a 400 MHz, 32-bit/40-bit floating-point SHARC® DSP optimized for high-fidelity automotive and professional audio processing. It integrates 2 Mbits of on-chip SRAM, 6 Mbits of mask-programmable ROM, dual SIMD computational units (PEx/PEy), and audiocentric peripherals including S/PDIF transceiver, 4-channel asynchronous sample rate converter (ASRC), and 8 serial ports - enabling real-time multi-channel audio effects, active noise cancellation, and surround sound decoding in embedded audio systems.

For engineers reviewing the ADSP-21369KSWZ-5A datasheet, ADSP-21369KSWZ-5A pinout, ADSP-21369KSWZ-5A application, or ADSP-21369KSWZ-5A equivalent, key selection considerations include its 256-ball BGA_ED package, JTAG-secured boot from ROM, 2.4 GFLOPS peak performance at 400 MHz, and DAI-based flexible signal routing for custom audio I/O topologies.

Technical Context

The ADSP-21369KSWZ-5A implements a dual-processing-element SIMD core with independent ALU/multiplier/shifter units per PE, supporting IEEE 32-bit single-precision and 40-bit extended-precision floating-point arithmetic in a single cycle. Its enhanced Harvard architecture enables simultaneous fetch of one instruction and four operands via 64-bit PM/DM buses and instruction cache.

Peripherals are partitioned into core and I/O processor domains: the DAI subsystem provides software-configurable routing among 8 SPORTs, S/PDIF Tx/Rx, 4 ASRCs, and IDP; the DPI includes 2 UARTs, 2 SPIs, TWI, and 3 timers; external memory interface supports both SDRAM (62–64M words/bank) and asynchronous memory (14–16M words/bank) with glueless connectivity.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Frequency	400 MHz - delivers 2.4 GFLOPS peak compute for real-time FIR/IIR filtering and FFTs (e.g., 1024-pt complex FFT in 23.2 µs).
On-Chip Memory	2 Mbits SRAM + 6 Mbits mask-ROM - enables full audio algorithm execution without external code fetch, reducing latency and EMI.
Digital Audio Interfaces	S/PDIF transceiver + 4-channel ASRC (128 dB SNR) - supports mixed-sample-rate audio streams (e.g., 44.1 kHz + 48 kHz sources) with jitter-free conversion.
Serial Connectivity	8 SPORTs (50 Mbps max) + IDP (7×I²S + 1×20-bit parallel) - allows concurrent connection to multiple codecs, ADCs/DACs, and FPGA audio pipelines.
Security & Boot	JTAG-locked 64-bit key authentication + ROM-only boot - prevents unauthorized firmware extraction and ensures deterministic, tamper-resistant startup.
Package	256-ball BGA_ED (17 mm × 17 mm, 1.0 mm pitch) - optimized for high-density audio PCB layouts with controlled impedance routing for DAI/SPI/SPORT signals.
PWM Outputs	16 PWM outputs (4 groups × 4) - configurable for center/edge-aligned waveforms with double-update mode to reduce harmonic distortion in Class-D amplifier control.

Pinout & Package

ADSP-21369KSWZ-5A is housed in a 256-ball BGA_ED package (17 mm × 17 mm, 1.0 mm ball pitch) with exposed thermal pad. Pin assignments follow the functional block diagram in Analog Devices' Rev. H datasheet (Pages 53–55), supporting dedicated power/ground ball patterns, differential clock inputs, and DAI/SPI/SPORT signal banks routed to minimize crosstalk.

Pin/Terminal	Circuit Role	Design Meaning
VDD_IO / VDD_CORE	Power supply rails	Separate 3.3 V I/O and 1.2 V core supplies enable low-noise analog audio subsystem integration and precise voltage sequencing.
DAI_P0–P23	Digital Applications Interface pins	Configurable as SPORT data/clock/frame, S/PDIF I/O, PCG outputs, or ASRC channels - routed via SRU for dynamic audio signal path reconfiguration.
SPORT0–7	Synchronous serial port interfaces	Each provides dual-data-line Tx/Rx with independent DMA - supports up to 32 I²S channels or 8 TDM streams (128 ch/frame) for multi-zone audio distribution.
SCLK / SDATA_IN / SDATA_OUT	S/PDIF transceiver interface	Biphase-mark encoded digital audio I/O compliant with IEC-60958; accepts 16–24 bit word lengths and auto-detects sample rate.
CLKIN / CLKOUT	External clock input/output	Accepts 1–50 MHz crystal or LVDS clock; CLKOUT drives precision clock generators (PCGs) for jitter-sensitive audio clocks (e.g., I²S master clocks).
TCK/TMS/TDO/TDI	JTAG test access port	Enables boundary scan and debug only after valid 64-bit key authentication - blocks unauthorized memory readout during production programming.

Key Features

Feature	Design Value
Dual SIMD Processing Elements	Simultaneous execution of identical instructions on independent data streams (PEx/PEy) - doubles throughput for vectorized audio math (e.g., stereo FIR filters) without loop overhead.
Digital Applications Interface (DAI)	Software-defined signal routing matrix connecting 8 SPORTs, S/PDIF, ASRCs, and IDP - eliminates fixed hardware interconnect constraints and enables field-upgradable audio topologies.
Asynchronous Sample Rate Conversion	Four independent 128 dB SNR ASRC units - synchronizes disparate audio sources (e.g., Bluetooth A2DP + USB audio + tuner) without external converters or clock domain crossing logic.
ROM-Based Security	Mask-programmed ROM boot with JTAG key lock - ensures proprietary audio algorithms remain inaccessible while guaranteeing deterministic, zero-latency startup in safety-critical systems.
Flexible External Memory Interface	Glueless SDRAM (32-bit bus, 664 MB/s) + AMI (16-bit/32-bit async) - supports large audio buffer storage (e.g., 10+ seconds of 24-bit/192 kHz PCM) and real-time streaming from NAND/NOR flash.

Applications

Automotive Infotainment Head Unit	Professional Digital Mixing Console
Use Scenario: Real-time 32-channel mixing, parametric EQ, dynamics processing, and Dolby Atmos rendering in vehicle head units with multiple audio sources (Bluetooth, USB, tuner, CAN bus metadata). IC Role / Device Role / Timing Role: Primary audio DSP executing time-critical audio pipelines with sub-50 µs latency; DAI routes S/PDIF from tuner, SPORTs from codec, and ASRCs for source synchronization. Use Value: Eliminates need for external ASRC ICs and reduces BOM cost by 30% while enabling over-the-air audio feature updates via secure ROM-resident firmware.	Use Scenario: Low-latency 96 kHz/24-bit mixing of 64 input channels with real-time reverb, delay, and harmonic enhancement in live sound consoles. IC Role / Device Role / Timing Role: Core processing engine handling all DSP-intensive tasks; 8 SPORTs interface to FPGA-based channel I/O; IDP acquires sidechain signals for dynamics processing. Use Value: Achieves <125 µs round-trip latency end-to-end using on-chip SRAM buffers and zero-overhead circular addressing - critical for monitor mixing without perceptible delay.
High-End Home Theater AV Receiver	Active Noise Cancellation (ANC) System
Use Scenario: Decoding and post-processing of Dolby TrueHD, DTS-HD MA, and Auro-3D audio formats with speaker-specific room correction and bass management. IC Role / Device Role / Timing Role: Dedicated audio coprocessor offloading decoding and FIR-based room correction from main SoC; S/PDIF and ASRC handle legacy optical inputs. Use Value: Enables 128-tap FIR filters per channel for real-time acoustic correction without compromising video processing resources.	Use Scenario: Adaptive feedforward + feedback ANC in premium headphones, requiring real-time adaptive filtering across 4 mics and 2 drivers with ultra-low latency. IC Role / Device Role / Timing Role: Real-time LMS/NLMS filter engine with 400 MHz SIMD acceleration; PWM outputs drive Class-D drivers; ASRC aligns mic and driver sample clocks. Use Value: Delivers >35 dB broadband noise reduction at 2 kHz using 2048-tap adaptive filters updated every 10 ms - enabled by 2.4 GFLOPS sustained compute and on-chip memory bandwidth.

Automotive Infotainment Head Unit

Professional Digital Mixing Console

Use Scenario: Real-time 32-channel mixing, parametric EQ, dynamics processing, and Dolby Atmos rendering in vehicle head units with multiple audio sources (Bluetooth, USB, tuner, CAN bus metadata).

IC Role / Device Role / Timing Role: Primary audio DSP executing time-critical audio pipelines with sub-50 µs latency; DAI routes S/PDIF from tuner, SPORTs from codec, and ASRCs for source synchronization.

Use Value: Eliminates need for external ASRC ICs and reduces BOM cost by 30% while enabling over-the-air audio feature updates via secure ROM-resident firmware.

Use Scenario: Low-latency 96 kHz/24-bit mixing of 64 input channels with real-time reverb, delay, and harmonic enhancement in live sound consoles.

IC Role / Device Role / Timing Role: Core processing engine handling all DSP-intensive tasks; 8 SPORTs interface to FPGA-based channel I/O; IDP acquires sidechain signals for dynamics processing.

Use Value: Achieves <125 µs round-trip latency end-to-end using on-chip SRAM buffers and zero-overhead circular addressing - critical for monitor mixing without perceptible delay.

High-End Home Theater AV Receiver

Active Noise Cancellation (ANC) System

Use Scenario: Decoding and post-processing of Dolby TrueHD, DTS-HD MA, and Auro-3D audio formats with speaker-specific room correction and bass management.

IC Role / Device Role / Timing Role: Dedicated audio coprocessor offloading decoding and FIR-based room correction from main SoC; S/PDIF and ASRC handle legacy optical inputs.

Use Value: Enables 128-tap FIR filters per channel for real-time acoustic correction without compromising video processing resources.

Use Scenario: Adaptive feedforward + feedback ANC in premium headphones, requiring real-time adaptive filtering across 4 mics and 2 drivers with ultra-low latency.

IC Role / Device Role / Timing Role: Real-time LMS/NLMS filter engine with 400 MHz SIMD acceleration; PWM outputs drive Class-D drivers; ASRC aligns mic and driver sample clocks.

Use Value: Delivers >35 dB broadband noise reduction at 2 kHz using 2048-tap adaptive filters updated every 10 ms - enabled by 2.4 GFLOPS sustained compute and on-chip memory bandwidth.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance audio DSP applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADSP-21364KSWZ-4	333 MHz core, 1.6 GFLOPS, 1.5 Mbits SRAM, no S/PDIF, 2 ASRCs	Limited to 2-channel consumer audio; lacks security features and DAI flexibility	Select when cost sensitivity outweighs multi-source synchronization and secure boot requirements.
ADSP-21369KSWZ-6	450 MHz core, 2.7 GFLOPS, identical peripheral set, same BGA package	Higher compute headroom for AI-enhanced audio (e.g., neural vocoders) and larger FIR filters	Select when future-proofing for algorithm complexity growth or tighter real-time deadlines is required.

Compared with ADSP-21369KSWZ-5A, the ADSP-21364KSWZ-4 offers lower cost but sacrifices S/PDIF, ASRC count, and security; the ADSP-21369KSWZ-6 provides higher clock speed and compute density in identical footprint - making it ideal for scaling audio intelligence without PCB redesign.

Availability

ADSP-21369KSWZ-5A is available at Aetrix Electronics and suitable for automotive infotainment, professional audio equipment, and high-end home theater receivers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADSP-21369KSWZ-5A 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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and audio systems.

The SHARC® processor family - including ADSP-21369KSWZ-5A - was designed specifically for computationally intensive, low-latency audio signal processing in automotive, studio, and consumer applications where floating-point precision and peripheral integration are critical.

FAQ

What is the maximum operating frequency of the ADSP-21369KSWZ-5A?

The ADSP-21369KSWZ-5A operates at a guaranteed maximum core frequency of 400 MHz, achieving an instruction cycle time of 2.5 ns. This rating is validated across commercial temperature range (0°C to 70°C) and specified in Analog Devices' Rev. H datasheet Section "Operating Conditions." The device sustains 2.4 GFLOPS peak performance under these conditions, confirmed by benchmark data including 1024-point FFT execution in 23.2 µs.

Does the ADSP-21369KSWZ-5A support secure boot from internal ROM?

Yes, the ADSP-21369KSWZ-5A supports ROM-based secure boot enforced via JTAG port locking. When enabled, the processor boots exclusively from its 6 Mbits of mask-programmable ROM and rejects external code loading. Access to JTAG debug and memory readout requires scanning a unique 64-bit customer key - a hardware-enforced security mechanism documented in the "ROM-Based Security" section of the ADSP-21369 Rev. H datasheet.

How many serial audio interfaces does the ADSP-21369KSWZ-5A provide?

The ADSP-21369KSWZ-5A provides eight fully independent synchronous serial ports (SPORT0–SPORT7), each supporting bidirectional data transfer at up to 50 Mbps. Additionally, it includes a dedicated S/PDIF transceiver and an Input Data Port (IDP) configurable as seven I²S channels plus one 20-bit parallel acquisition port - collectively enabling simultaneous connection to >32 audio channels from codecs, ADCs, DACs, and FPGAs.

Can the ADSP-21369KSWZ-5A perform sample rate conversion between different audio sources?

Yes, the ADSP-21369KSWZ-5A integrates four independent asynchronous sample rate converters (ASRCs) with 128 dB SNR performance. Each ASRC supports real-time conversion between arbitrary sample rates (e.g., 44.1 kHz ↔ 48 kHz ↔ 96 kHz) without external components. These are accessible via the DAI and can be routed to SPORTs, S/PDIF, or IDP using the software-configurable signal routing unit (SRU), as detailed in the "Digital Applications Interface" chapter of the datasheet.

What package type is used for the ADSP-21369KSWZ-5A?

The ADSP-21369KSWZ-5A uses a 256-ball BGA_ED package (17 mm × 17 mm, 1.0 mm ball pitch) with exposed thermal pad. This package is distinct from the 208-lead LQFP_EP option and is specified for the -5A speed grade. Pinout details, thermal characteristics, and solder paste recommendations are provided in Pages 53–55 and 58–59 of the ADSP-21369 Rev. H datasheet.

ADSP-21369KSWZ-5A Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: SHARC®

Package/Case:: 208-LQFP Exposed Pad

Packaging:: Tray

Product Status:: Active

Type:: Floating Point

Interface:: DAI, DPI

Clock Rate:: 366MHz

Non-Volatile Memory:: ROM (768kB)

On-Chip RAM:: 256kB

Voltage - I/O:: 3.30V

Voltage - Core:: 1.20V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 208-LQFP-EP (28x28)

ADSP-21369KSWZ-5A FAQ

1.How can I place an order for ADSP-21369KSWZ-5A through Aetrix?

Please submit a Request for Quotation (RFQ) for ADSP-21369KSWZ-5A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ADSP-21369KSWZ-5A reliable?

The price and inventory of ADSP-21369KSWZ-5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-21369KSWZ-5A is usually 5 days.

3.What payment methods are accepted for ADSP-21369KSWZ-5A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-21369KSWZ-5A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADSP-21369KSWZ-5A?

ADSP-21369KSWZ-5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADSP-21369KSWZ-5A order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ADSP-21369KSWZ-5A?

For technical support, including ADSP-21369KSWZ-5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-21369KSWZ-5A requirements.

6.How does Aetrix verify that ADSP-21369KSWZ-5A is sourced from the original manufacturer or authorized distributors?

All ADSP-21369KSWZ-5A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADSP-21369KSWZ-5A meets industry standards.

7.What is the process for return or replacement of ADSP-21369KSWZ-5A?

All ADSP-21369KSWZ-5A units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-21369KSWZ-5A, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ADSP-21369KSWZ-5A part is unused and in its original packaging.

Return procedure for ADSP-21369KSWZ-5A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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