Analog Devices Inc. ADSP-21567BBCZ8

Overview

ADSP-21567BBCZ8 from Analog Devices is a SHARC+ single-core floating-point DSP operating at up to 800 MHz, featuring 5 MB of L1 SRAM with parity, 1024 kB L2 SRAM with ECC, and integrated FIR/IIR hardware accelerators. It supports 32-/40-/64-bit floating-point arithmetic and is AEC-Q100 qualified for automotive audio amplifier and ANC/RNC systems.

For engineers reviewing the ADSP-21567BBCZ8 datasheet, ADSP-21567BBCZ8 pinout, ADSP-21567BBCZ8 application, or ADSP-21567BBCZ8 equivalent, key selection criteria include its 400-ball CSP_BGA package (0.8 mm pitch), dual 2×4 ASRCs, 2× S/PDIF Rx/Tx interfaces, 6× I²C, and DDR3/DDR3L L3 memory interface optimized for low-power automotive signal processing.

Technical Context

The ADSP-21567BBCZ8 implements a modified Harvard architecture with separate PM and DM buses enabling simultaneous instruction fetch and dual data transfers per cycle. Its SHARC+ core includes branch prediction, BTB, and instruction conflict cache to sustain looped DSP operations at full 800 MHz clock speed.

System-level integration includes a dedicated SHARC fabric connecting FIR/IIR accelerators directly to L1 memory-bypassing system fabric arbitration-and an SMPU for fine-grained memory protection across core, DMA, and peripherals. The L3 interface provides a 16-bit DDR3/DDR3L controller with configurable timing for deterministic low-latency external memory access.

Key Specifications

Pinout & Package

ADSP-21567BBCZ8 uses a 17 mm × 17 mm, 400-ball CSP_BGA package with 0.8 mm ball pitch and RoHS compliance. Ball assignment follows Analog Devices' BC-400-3 footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21567BBCZ8, ADSP-21569BBCZ8 delivers higher compute headroom and memory capacity for future-proofing, while ADSP-21565BBCZ8 trades L2 size and L3 interface for lower cost-making ADSP-21567BBCZ8 the balanced choice for production automotive audio requiring AEC-Q100, 800 MHz performance, and DDR3 expandability.

Availability

ADSP-21567BBCZ8 is available at Aetrix Electronics and suitable for automotive audio amplifier, active noise cancellation, and digital cockpit audio hub applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADSP-21567BBCZ8 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, serving automotive, industrial, and communications markets since 1965.

The ADSP-21567BBCZ8 belongs to the SHARC+ family-designed specifically for deterministic, low-latency audio and sensor signal processing in safety-critical automotive and professional audio systems.

FAQ

What is the maximum operating frequency of the ADSP-21567BBCZ8?

The ADSP-21567BBCZ8 is rated for a maximum core frequency of 800 MHz. This speed grade is confirmed in Analog Devices' official ordering guide (Rev. D, June 2023) and enables real-time execution of computationally intensive audio algorithms-including multi-band ANC and high-order FIR equalization-without external acceleration. The device achieves this performance with 1.0 V core supply and strict thermal management within its 17 mm × 17 mm CSP_BGA package.

Does the ADSP-21567BBCZ8 support DDR3 memory interfacing?

Yes, the ADSP-21567BBCZ8 includes a dedicated 16-bit DDR3/DDR3L controller as part of its L3 memory interface. This interface operates independently from the L1/L2 SRAM subsystem and is optimized for low-power, deterministic access-supporting data rates up to 800 MT/s. It is implemented exclusively in the 400-ball CSP_BGA package variant and requires board-level termination and impedance-controlled routing per Analog Devices' AN-1312 design guidelines.

Is the ADSP-21567BBCZ8 AEC-Q100 qualified?

Yes, the ADSP-21567BBCZ8 is AEC-Q100 qualified for automotive applications. Per Analog Devices' documentation (Rev. D, Page 1), it meets Grade 2 temperature requirements (−40°C to +105°C ambient, up to +125°C junction) and includes integrated safety features such as Fault Management Unit (FMU), Thermal Monitor Unit (TMU), and System Memory Protection Unit (SMPU) to support ASIL-B compliance in audio ECU designs.

How much on-chip memory does the ADSP-21567BBCZ8 provide?

The ADSP-21567BBCZ8 integrates 5 MB (640 kB) of L1 SRAM with parity protection-configurable as program/data memory or instruction cache-and 1024 kB of L2 SRAM with ECC. The L1 memory supports single-cycle core access, while the L2 block is subdivided into eight banks to enable concurrent access by the SHARC+ core and multiple DMA channels, as specified in Table 3 of the Rev. D datasheet.

What audio interfaces are integrated into the ADSP-21567BBCZ8?

The ADSP-21567BBCZ8 integrates two Digital Audio Interfaces (DAI), two full SPORTs (2×4), two S/PDIF transceivers (2×1), and two 2×4 ASRC blocks. These interfaces support TDM, I²S, left-justified, and custom serial protocols with sample rates from 8 kHz to 192 kHz. All are accessible via the 400-ball CSP_BGA package's dedicated audio pin groups and are fully programmable through memory-mapped registers in the SHARC+ core address space.