NXP Semiconductors DSPB56362AG120

Overview

DSPB56362AG120 from Freescale Semiconductor is a 24-bit audio digital signal processor (DSP) built on the DSP56300 core architecture, delivering 100 MIPS at 100 MHz and 3.3 V. It integrates an ESAI, SHI, DAX, six-channel DMA, PLL-based clock generator, and OnCE™/JTAG debug support. Designed for real-time Dolby Digital, MPEG2 5.1, and DTS decoding in consumer AV receivers and home theater systems.

For engineers reviewing the DSPB56362AG120 datasheet, DSPB56362AG120 pinout, DSPB56362AG120 application, or DSPB56362AG120 equivalent, key selection criteria include its 144-pin LQFP package, 24-bit parallel MAC with 56-bit barrel shifter, instruction cache configurability, dual-mode HDI08 host interface, and dedicated audio peripheral set supporting I²S, AC97, S/PDIF, and THX5.1 post-processing.

Technical Context

The DSPB56362AG120 implements a modified Harvard architecture with separate P-, X-, and Y-memory spaces, enabling simultaneous program and data access. Its DSP56300 core features a fully pipelined 24×24-bit MAC, 56-bit accumulator pair, and 56-bit barrel shifter optimized for bitstream parsing and normalization in audio codecs.

Peripheral integration includes a six-channel DMA unit supporting 1D/2D/3D transfers and circular buffering, an Enhanced Serial Audio Interface (ESAI) with six configurable serial data lines, and a Digital Audio Transmitter (DAX) compliant with S/PDIF, IEC958, and AES/EBU standards. The PLL supports software-programmable frequency synthesis with skew-eliminated CLKOUT.

Key Specifications

Pinout & Package

Package: 144-pin plastic thin quad flat pack (LQFP), surface-mount, 20 mm × 20 mm, 0.5 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21369 and DSP56364AG120, the DSPB56362AG120 provides optimal balance of fixed-point audio performance, integrated peripherals, and power efficiency for cost-sensitive consumer audio-without requiring external transceivers or memory controllers.

Availability

DSPB56362AG120 is available at Aetrix Electronics and suitable for home theater receivers, professional audio mixers, automotive infotainment systems, and smart speaker hubs requiring stable component supply across long production lifecycles.

Supply support for DSPB56362AG120 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

Freescale Semiconductor (now part of NXP Semiconductors) is a fabless semiconductor company specializing in embedded processing, connectivity, and analog solutions for automotive, industrial, and consumer markets.

The DSP56362 product line was engineered to deliver high-efficiency, multiformat audio processing in resource-constrained consumer electronics-combining the DSP56300 core with Symphony-family audio acceleration and system-level peripherals.

FAQ

What is the maximum operating frequency and voltage specification for the DSPB56362AG120?

The DSPB56362AG120 operates at a maximum internal clock frequency of 100 MHz with a supply voltage of 3.3 V ±5%. This enables 100 million instructions per second (MIPS) performance while maintaining compatibility with standard 3.3 V logic interfaces. The device uses fully static CMOS design, allowing operation down to 0 Hz in low-power modes without loss of state.

Does the DSPB56362AG120 support S/PDIF output natively, and how is it implemented?

Yes, the DSPB56362AG120 includes a dedicated Digital Audio Transmitter (DAX) block that supports native S/PDIF output compliant with IEC60958, IEC61937, CP-340, and AES/EBU standards. It uses two pins (DAX_SD0 and DAX_CLK) and can be configured to embed channel status and user data directly in the bitstream without external encoder ICs.

How does the ESAI interface on the DSPB56362AG120 differ from standard I²S in terms of flexibility?

The ESAI on the DSPB56362AG120 supports six serial data lines (four bidirectional, two transmit-only), programmable frame sync polarity, variable bit clock rates, and custom slot widths-enabling direct interface with AC97 codecs, Sony digital interfaces, and proprietary audio protocols beyond basic I²S. It also supports master/slave operation and multi-channel TDM configurations.

Can the DSPB56362AG120 execute legacy DSP56000-family code without modification?

Yes, the DSPB56362AG120 maintains full object-code compatibility with the DSP56000 core family. Firmware compiled for earlier devices such as the DSP56002 or DSP56301 runs unchanged on the DSPB56362AG120, preserving investment in existing audio algorithms while benefiting from architectural enhancements like the instruction cache and six-channel DMA.

What debug and emulation capabilities are integrated into the DSPB56362AG120?

The DSPB56362AG120 integrates an On-Chip Emulation (OnCE™) module and IEEE 1149.1 JTAG test access port (TAP). These enable real-time instruction trace, breakpoint setting, register inspection, and memory read/write during active execution-critical for developing and validating complex audio processing pipelines in the DSPB56362AG120.