NXP Semiconductors DSP56301AG80

Overview

DSP56301AG80 from Freescale Semiconductor is a 24-bit programmable digital signal processor (DSP) with DSP56300 core architecture, delivering 80 MIPS at 80 MHz internal clock, 3.3 V supply, and integrated 6-channel DMA, PLL, OnCE™ emulation, and JTAG TAP. It executes position-independent code in telecom and multimedia systems such as cellular baseband processing and videoconferencing endpoints.

For engineers reviewing the DSP56301AG80 datasheet, DSP56301AG80 pinout, DSP56301AG80 application, or DSP56301AG80 equivalent, key selection criteria include its 24-bit data path, 56-bit MAC unit, on-chip instruction cache configuration, triple timer module, and PCI/Universal Host Interface compliance without external logic.

Technical Context

The DSP56301AG80 implements a fully pipelined 24 × 24-bit parallel MAC with two 56-bit accumulators and a 56-bit barrel shifter, supporting both 24-bit and 16-bit arithmetic under software control. Its memory subsystem includes configurable on-chip RAM and instruction cache, with four memory mapping modes affecting Program RAM (1024–4096 × 24), Instruction Cache (0–1024 × 24), X/Y Data RAM (2048–3072 × 24).

It integrates a six-channel DMA controller, triple timer module, two ESSI interfaces, SCI with baud rate generator, and a 32-bit PCI/Universal Host Interface compliant with PCI Rev. 2.1 - all managed by an on-chip program interrupt controller and address generation unit optimized for real-time DSP workloads.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), RoHS-compliant, thermal pad exposed on underside.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital signal processor applications.

Compared with ADSP-2189M and TMS320VC5402, the DSP56301AG80 uniquely combines 24-bit fixed-point precision, integrated PCI host interface, dual ESSI, and configurable instruction cache-enabling compact, high-throughput embedded DSP systems without external glue logic.

Availability

DSP56301AG80 is available at Aetrix Electronics and suitable for cellular infrastructure, videoconferencing hardware, and industrial motor control systems requiring stable component supply and long-term lifecycle support.

Supply support for DSP56301AG80 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 was a leading designer of embedded processors, analog, and mixed-signal semiconductors, later acquired by NXP Semiconductors in 2015.

The DSP56300 family-including the DSP56301AG80-was engineered for high-efficiency, real-time signal processing in wireless infrastructure, telecom access equipment, and multimedia terminals.

FAQ

What clock frequency does the DSP56301AG80 operate at?

The DSP56301AG80 operates at an internal core clock of 80 MHz, achieved via its on-chip PLL using an external crystal (EXTAL/XTAL) input up to 40 MHz. This yields 80 MIPS performance at 3.3 V supply. The device supports three speed grades (66/80/100 MHz), and the AG80 suffix specifically denotes the 80 MHz variant. All timing specifications in the DSP56301 technical data sheet are validated for this speed grade.

Does the DSP56301AG80 include on-chip memory, and how is it configured?

Yes, the DSP56301AG80 includes programmable on-chip memory: up to 4096 × 24-bit Program RAM, 1024 × 24-bit Instruction Cache, and 2048 × 24-bit X and Y Data RAM. Configuration is controlled at reset via MODE pins, selecting among four predefined memory maps. The DSP56301AG80's memory layout supports simultaneous access to X and Y data spaces-critical for efficient FFT and filter execution-and allows cache enable/disable to balance latency versus code density.

Is the DSP56301AG80 pin-compatible with other members of the DSP56300 family?

No, the DSP56301AG80 is not universally pin-compatible across the DSP56300 family. While it shares the same 144-pin LQFP package with some variants (e.g., DSP56301FG80), pin functions differ based on enabled peripherals and memory mapping. For example, certain GPIO pins in the DSP56301AG80 are reassigned to ESSI or HI32 signals depending on configuration. Always verify pin assignments against the DSP56301AG80-specific pinout table in the DSP56301 Technical Data document before board design.

What debug and emulation capabilities does the DSP56301AG80 provide?

The DSP56301AG80 integrates the On-Chip Emulation (OnCE™) module and JTAG Test Access Port (TAP), enabling non-intrusive real-time debugging, breakpoint setting, register inspection, and memory read/write without halting execution. It supports address tracing mode, which mirrors internal bus activity on external pins for protocol analyzers. These features are fully supported by Freescale's CodeWarrior Development Studio and require only a standard JTAG debugger cable-no additional probe hardware is needed for basic firmware validation of the DSP56301AG80.

Can the DSP56301AG80 interface directly with DRAM or SRAM without external logic?

Yes, the DSP56301AG80 includes an on-chip DRAM controller and chip select logic that supports direct connection to standard asynchronous SRAMs and DRAMs without external address latches, multiplexers, or refresh circuitry. Its external bus interface provides dedicated RAS/CAS/WE controls and automatic DRAM refresh. When using SRAM, the DSP56301AG80's programmable wait-state generator accommodates access times from 35 ns to 200 ns-enabling seamless integration with common 32K×16 or 128K×16 SRAM devices in telecom and audio applications.