Analog Devices Inc. ADSP-21364KSWZ-1AA

Overview

ADSP-21364KSWZ-1AA from Analog Devices is a 32-/40-bit floating-point SHARC® DSP optimized for high-performance automotive audio processing, featuring 333 MHz core instruction rate, 3M bits of on-chip SRAM, 4M bits of mask-programmable ROM, and integrated S/PDIF transceiver with DTCP support. It executes two GFLOPS in SIMD mode and delivers –140 dB SRC SNR performance.

For engineers reviewing the ADSP-21364KSWZ-1AA datasheet, ADSP-21364KSWZ-1AA pinout, ADSP-21364KSWZ-1AA application, or ADSP-21364KSWZ-1AA equivalent, key selection criteria include audiocentric peripheral integration (ASRC, PCG, DAI), ROM-based security with 64-bit JTAG key enforcement, and LQFP_EP package compatibility for thermal and layout-constrained automotive head unit designs.

Technical Context

The ADSP-21364KSWZ-1AA implements a dual-processing-element SIMD core with PEX and PEY units, each containing ALU, multiplier, shifter, and 16×40-bit register file, enabling parallel execution of IEEE 32-bit single-precision and 40-bit extended-precision floating-point operations. Its enhanced Harvard architecture supports simultaneous 64-bit PM and DM bus transfers plus 32-bit IOD bus access.

It integrates a dedicated digital audio interface (DAI) with six serial ports, eight-channel asynchronous sample rate converter (ASRC), precision clock generators A/B, S/PDIF Tx/Rx, DTCP cipher, and signal routing unit (SRU) for software-configurable inter-peripheral connectivity - all operating independently of the core via an I/O processor DMA engine.

Key Specifications

Pinout & Package

ADSP-21364KSWZ-1AA is housed in a 144-lead LQFP_EP (exposed pad) package measuring 20 mm × 20 mm × 1.4 mm, with thermal pad grounded for enhanced power dissipation in automotive audio amplifiers and head units.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21364KSWZ-1AA, the ADSP-21365KSWZ-1AA adds ROM-based audio decoders for plug-and-play surround sound, while the ADSP-21362KSWZ-1AA removes S/PDIF and SRC to serve secure compute-only roles - making ADSP-21364KSWZ-1AA the optimal balance of audiocentric peripherals, security, and ROM flexibility for mid-tier automotive audio platforms.

Availability

ADSP-21364KSWZ-1AA is available at Aetrix Electronics and suitable for automotive infotainment head units, high-end Class-D amplifiers, professional studio monitor controllers, and active noise cancellation systems requiring stable component supply across extended production lifecycles.

Supply support for ADSP-21364KSWZ-1AA 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 ADSP-21364KSWZ-1AA belongs to the SHARC® family of SIMD DSPs designed specifically for computationally intensive, low-latency audio signal processing in automotive, professional audio, and industrial control applications.

FAQ

What is the maximum operating frequency of the ADSP-21364KSWZ-1AA?

The ADSP-21364KSWZ-1AA operates at a maximum core instruction rate of 333 MHz, confirmed in the Rev. J datasheet Section "Specifications." This speed is achieved using the on-chip PLL with configurable multiplier/divider ratios and is validated across the full industrial temperature range (–40°C to +105°C) for automotive applications.

Does the ADSP-21364KSWZ-1AA support S/PDIF and DTCP simultaneously?

Yes, the ADSP-21364KSWZ-1AA integrates both S/PDIF transmitter/receiver and DTCP cipher hardware, as documented in Table 2 and the "Dedicated Audio Components" section of the Rev. J datasheet. DTCP operates on encrypted S/PDIF streams, and both functions are active in the ADSP-21364KSWZ-1AA variant per its feature set.

What package type is used for the ADSP-21364KSWZ-1AA?

The ADSP-21364KSWZ-1AA uses a 144-lead LQFP_EP (low-profile quad flat package with exposed pad) package, specified on Page 16 and illustrated in Figure 48 of the Rev. J datasheet. The exposed thermal pad must be soldered to a PCB copper pour for thermal management in sustained 333 MHz operation.

How does ROM-based security work on the ADSP-21364KSWZ-1AA?

The ADSP-21364KSWZ-1AA implements ROM-based security by disabling external boot modes and restricting JTAG access unless a unique 64-bit customer key is scanned via the test access port, as described in the "ROM-Based Security" section (Page 6). This prevents unauthorized firmware extraction or debugging of code stored in the 4M-bit mask-ROM.

Is the ADSP-21364KSWZ-1AA pin-compatible with other ADSP-2136x family members?

Yes, the ADSP-21364KSWZ-1AA shares identical pinout and package dimensions with other 144-lead LQFP_EP variants in the ADSP-2136x family (e.g., ADSP-21362KSWZ-1AA, ADSP-21365KSWZ-1AA), as confirmed by the "144-Lead LQFP_EP Pin Configurations" section (Page 48) of the Rev. J datasheet - enabling drop-in replacement where peripheral requirements align.