Analog Devices Inc. ADSP-21477KCPZ-1A

Overview

ADSP-21477KCPZ-1A from Analog Devices is a 32-bit/40-bit floating-point SHARC® DSP optimized for high-performance audio processing, operating at up to 200 MHz with 2 Mbits of on-chip SRAM and no ROM, in a 100-lead LQFP package. It features SIMD computational architecture, eight serial ports (SPORTs), S/PDIF transceiver, and digital applications interface (DAI) with precision clock generators and asynchronous sample rate converters. It targets professional audio mixing consoles and automotive infotainment head units requiring deterministic real-time signal processing.

For engineers reviewing the ADSP-21477KCPZ-1A datasheet, ADSP-21477KCPZ-1A pinout, ADSP-21477KCPZ-1A application, or ADSP-21477KCPZ-1A equivalent, key selection criteria include core clock frequency (200 MHz), on-chip memory configuration (2 Mbits SRAM, no ROM), peripheral set (8 SPORTs, S/PDIF, DAI, PCG, ASRC), thermal diode support, and AEC-Q100 qualification status for automotive use cases.

Technical Context

The ADSP-21477KCPZ-1A implements a dual-processing-element SIMD core with PEx (always active) and PEY (enableable via MODE1), delivering 1.2 GFLOPS at 200 MHz. Its enhanced Harvard architecture supports simultaneous 64-bit PM and DM bus transfers, single-cycle fetch of one instruction and four operands, and 48-bit VISA instructions for code density.

Peripherally, it integrates a full digital applications interface (DAI) with 20 DAI/DPI routing pins, four precision clock generators (PCG), S/PDIF Tx/Rx, four asynchronous sample rate converters (ASRC), and eight serial ports - all accessible without external glue logic. The device lacks external port (SDRAM/AMI) support due to its 100-lead LQFP package constraint per Table 2.

Key Specifications

Pinout & Package

ADSP-21477KCPZ-1A is housed in a 100-lead LQFP_EP (exposed pad) package with 0.5 mm pitch, measuring 14 mm × 14 mm × 1.4 mm. The exposed thermal pad improves heat dissipation and must be soldered to a PCB thermal plane for reliable operation at full speed.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21477KCPZ-1A, the ADSP-21478KCPZ-2A offers higher clock speed and embedded ROM but same package footprint, while ADSP-21479KCPZ-3A trades LQFP compatibility for expanded memory and BGA-only peripherals - making ADSP-21477KCPZ-1A the optimal balance of audio DSP performance, thermal manageability, and through-hole manufacturability.

Availability

ADSP-21477KCPZ-1A is available at Aetrix Electronics and suitable for professional audio equipment, automotive infotainment systems, and digital speaker management requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.

Supply support for ADSP-21477KCPZ-1A 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 digital signal processing semiconductors, headquartered in Wilmington, MA, with R&D and manufacturing facilities worldwide.

The ADSP-21477KCPZ-1A belongs to the SHARC® family of SIMD floating-point DSPs designed specifically for computationally intensive, low-latency audio signal processing in professional, automotive, and industrial environments.

FAQ

What is the maximum operating frequency of the ADSP-21477KCPZ-1A?

The ADSP-21477KCPZ-1A operates at a maximum core frequency of 200 MHz, as specified in Table 2 of the Rev. E datasheet. This frequency enables deterministic execution of real-time audio algorithms including 1024-point FFT in 45.885 μs and FIR filtering at 2.49 ns per tap. The device achieves this using an internal PLL locked to the CLKIN reference, with thermal derating applied above 85°C ambient.

Does the ADSP-21477KCPZ-1A include on-chip ROM?

No, the ADSP-21477KCPZ-1A contains 2 Mbits of on-chip SRAM but no ROM, as confirmed in Table 2 of the Rev. E datasheet. Code execution occurs from internal SRAM (loaded at boot) or external memory via SPORTs/DAI. Factory-programmed ROM is available only on ADSP-21478 and ADSP-21479 variants.

Is the ADSP-21477KCPZ-1A qualified for automotive applications?

Yes, the ADSP-21477KCPZ-1A is AEC-Q100 qualified for automotive applications (Grade 3: −40°C to +85°C), as stated in the Summary section and Automotive Products chapter of the Rev. E datasheet. This qualification covers stress testing, failure mechanism analysis, and reliability validation required for infotainment and body electronics deployment.

Can the ADSP-21477KCPZ-1A interface to external SDRAM?

No, the ADSP-21477KCPZ-1A does not support external SDRAM because it is packaged in a 100-lead LQFP, which omits external port (EP) pins required for SDRAM/AMI interfaces. As noted in Table 2 footnote 1, SDRAM controller functionality is exclusive to the 196-ball CSP_BGA package used by ADSP-21479.

What development tools are supported for the ADSP-21477KCPZ-1A?

The ADSP-21477KCPZ-1A is fully supported by Analog Devices' CrossCore Embedded Studio IDE, SHARC EZ-KIT Lite evaluation hardware (EVAL-21479 EZKIT), and VisualDSP++ legacy toolchain. Debugging uses JTAG via ICE-1000/2000 emulators, and code profiling leverages the on-chip instruction cache and core timer with FLAG3 output.