NXP Semiconductors DSPB56362AG120R2

Overview

DSPB56362AG120R2 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 enhanced serial audio interface (ESAI), six-channel DMA, programmable PLL clock generator, and on-chip instruction cache. Designed for real-time digital audio compression/decompression (Dolby Digital, DTS, MPEG2 5.1), soundfield processing, and acoustic equalization in consumer AV receivers and home theater systems.

For engineers reviewing the DSPB56362AG120R2 datasheet, DSPB56362AG120R2 pinout, DSPB56362AG120R2 application, or DSPB56362AG120R2 equivalent, key selection criteria include its 144-pin LQFP package, 24-bit data/program word width, 100 MHz core clock with PLL support, ESAI and SHI peripheral compatibility, and memory-mapped GPIO configuration across Ports B/C/D.

Technical Context

The DSPB56362AG120R2 implements a fully pipelined 24 × 24-bit MAC with dual 56-bit accumulators and a 56-bit barrel shifter optimized for bitstream parsing and normalization in audio codecs. Its Harvard architecture enables simultaneous access to program and data memories, with configurable RAM/cache allocation across X/Y/P spaces.

It features a triple-timer module, JTAG/OnCE™ debug interface, and hardware-supported wait/stop low-power modes. The external memory expansion port supports up to 16M × 24-bit DRAM and 256K × 24-bit SRAM, with glueless DRAM controller and chip-select logic for direct interfacing without external logic.

Key Specifications

Pinout & Package

The DSPB56362AG120R2 is housed in a 144-pin plastic thin quad flat pack (LQFP) with 0.5 mm pitch, designed for high-density PCB layouts and thermal management in audio subsystems. Power and ground pins are distributed across dedicated supply domains (VCCP/GNDP, VCCQ/GNDQ, VCCA/GNDA, etc.) to minimize noise coupling between analog-sensitive peripherals (ESAI, DAX) and digital logic.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21369 and TMS320C6713B, the DSPB56362AG120R2 provides superior integration for fixed-point audio decoding and post-processing, reducing external component count and PCB area while maintaining deterministic real-time performance at lower power consumption.

Availability

DSPB56362AG120R2 is available at Aetrix Electronics and suitable for home theater receivers, professional audio mixers, automotive infotainment systems, and Dolby-certified decoder modules requiring stable component supply and long-term lifecycle support.

Supply support for DSPB56362AG120R2 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 developed to deliver high-performance, low-cost audio DSP capability with integrated peripherals-targeting cost-sensitive, high-volume digital audio equipment where code compatibility with legacy DSP56000 designs was critical.

FAQ

What is the maximum supported external memory size for DSPB56362AG120R2?

The DSPB56362AG120R2 supports up to 16M × 24-bit word DRAM and 256K × 24-bit word SRAM via its external memory expansion port. This is enabled by the on-chip DRAM controller and chip-select logic, allowing direct interface without external glue logic. The DSPB56362AG120R2 uses 18-bit external address bus (A0–A17) with bank-select extensions through AA0–AA3/RAS0–RAS3 to achieve full addressing range.

Does DSPB56362AG120R2 support S/PDIF output natively?

Yes, the DSPB56362AG120R2 includes a dedicated Digital Audio Transmitter (DAX) peripheral that supports S/PDIF output compliant with IEC60958, IEC61937, and AES/EBU standards. The DAX_DTX pin delivers serialized audio data with embedded channel status and user bits, eliminating need for external transceivers in basic S/PDIF implementations. The DSPB56362AG120R2 also allows GPIO reconfiguration of DAX pins for flexibility in board layout.

Is DSPB56362AG120R2 pin-compatible with earlier DSP563xx family members?

No, the DSPB56362AG120R2 is not pin-compatible with prior DSP563xx devices such as DSP56303 or DSP56309 due to its expanded 144-pin LQFP package, additional power/ground domains (VCCP, VCCQH, VCCS), and reorganized peripheral pin mapping (e.g., ESAI signals multiplexed with Port C). While it maintains object-code compatibility with the DSP56000 core, hardware design requires new PCB layout and power delivery network tailored to the DSPB56362AG120R2's segmentation.

What debug interfaces does DSPB56362AG120R2 provide?

The DSPB56362AG120R2 integrates both JTAG (TCK/TDI/TDO/TMS/TRST) and On-Chip Emulation (OnCE™) modules for hardware debugging. These enable real-time instruction trace, breakpoint setting, register inspection, and memory read/write over the JTAG port. The DSPB56362AG120R2 also supports address trace mode, which reflects internal program RAM accesses at the external port for performance profiling without halting execution.

Can DSPB56362AG120R2 operate with a 5 V host interface?

The DSPB56362AG120R2's HDI08 host interface operates at 3.3 V logic levels, but four control inputs-MODA/IRQA, MODB/IRQB, MODC/IRQC, and MODD/IRQD-are explicitly 5 V tolerant per the datasheet. The RESET pin is also 5 V tolerant. However, all data/address/control signals (H0–H7, HA0–HA10, HRD/HWR, etc.) and power supplies must remain at 3.3 V; interfacing to a 5 V host bus requires level-shifting circuitry for those signals.