Analog Devices Inc. ADSP-21364BSWZ-1AA

Overview

ADSP-21364BSWZ-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 8-channel asynchronous sample rate conversion (ASRC) supporting –140 dB SNR. It executes two GFLOPS in SIMD mode and delivers <1.5 ns FIR filter latency per tap.

For engineers reviewing the ADSP-21364BSWZ-1AA datasheet, ADSP-21364BSWZ-1AA pinout, ADSP-21364BSWZ-1AA application, or ADSP-21364BSWZ-1AA equivalent, key selection criteria include audiocentric peripheral integration (PCG, DTCP, ASRC), ROM-based security with 64-bit JTAG key enforcement, LQFP_EP package compatibility, and source-code compatibility across ADSP-2136x family members.

Technical Context

The ADSP-21364BSWZ-1AA implements a dual-processing-element SIMD core (PEX/PEY), each with 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 DMA.

It integrates a dedicated digital audio interface (DAI) with six full-duplex serial ports, two SPI-compatible interfaces, eight-channel ASRC, S/PDIF Tx/Rx, precision clock generators (PCG A/B), and DTCP cipher - all routed via software-configurable signal routing unit (SRU). The I/O processor handles 32-bit DMA independently of the core.

Key Specifications

Pinout & Package

ADSP-21364BSWZ-1AA is housed in a 144-lead LQFP_EP (exposed pad) package with 0.5 mm pitch, designed for thermal management in automotive audio amplifiers and head units. Pin assignments follow the standard ADSP-2136x LQFP_EP configuration per Analog Devices Rev. J datasheet, Page 48.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21364BSWZ-1AA, the ADSP-21365BSWZ-1AA adds licensed audio decoders and DTCP support at the cost of reduced ASRC SNR (–128 dB vs. –140 dB), while the ADSP-21364BBCZ-1AA offers identical functionality in a smaller BGA package requiring mechanical redesign but delivering superior thermal resistance.

Availability

ADSP-21364BSWZ-1AA is available at Aetrix Electronics and suitable for automotive infotainment, professional audio mixing, and high-end home theater AV receivers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADSP-21364BSWZ-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 DSP technologies for precision signal processing applications.

The ADSP-2136x SHARC® processor family was engineered specifically for demanding real-time audio systems-integrating audiocentric peripherals, security features, and floating-point compute density to replace multi-chip solutions in automotive and pro-audio equipment.

FAQ

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

The ADSP-21364BSWZ-1AA operates at a guaranteed core instruction rate of 333 MHz, derived from an on-chip PLL locked to an external CLKIN signal (1–50 MHz). This frequency enables two GFLOPS of SIMD computation and sub-1.5 ns FIR filter latency per tap, validated across automotive temperature ranges (–40°C to +105°C).

Does the ADSP-21364BSWZ-1AA support S/PDIF and ASRC simultaneously?

Yes, the ADSP-21364BSWZ-1AA integrates both a fully compliant S/PDIF transceiver and an 8-channel asynchronous sample rate converter (ASRC) with –140 dB SNR. They operate concurrently: S/PDIF receives jittery consumer audio streams, and ASRC cleans and resamples them to match internal processing clocks-without consuming core cycles.

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

The ADSP-21364BSWZ-1AA enforces ROM-based security by disabling external boot modes and restricting JTAG access until a unique 64-bit key is scanned via the JTAG port. Once authenticated, the device boots exclusively from internal mask-ROM, and protected memory regions prevent unauthorized read access to sensitive code segments.

Is the ADSP-21364BSWZ-1AA pin-compatible with other ADSP-2136x variants in LQFP_EP?

Yes, the ADSP-21364BSWZ-1AA shares identical pinout, package dimensions, and thermal pad layout with all ADSP-2136x family members offered in the 144-lead LQFP_EP package (e.g., ADSP-21362BSWZ-1AA, ADSP-21365BSWZ-1AA), enabling hardware reuse across performance- and feature-tiered designs.

What development tools are supported for the ADSP-21364BSWZ-1AA?

Analog Devices provides VisualDSP++ 5.0 IDE, EZ-KIT Lite evaluation boards, and ICE-1000/2000 emulators for the ADSP-21364BSWZ-1AA. These tools support full JTAG debugging, cycle-accurate simulation, and SHARC-specific compiler optimizations-including automatic vectorization of C code for SIMD execution.