NXP Semiconductors DSP56301VF80B1

Overview

DSP56301VF80B1 from Freescale Semiconductor is a 24-bit programmable digital signal processor (DSP) built on the DSP56300 core architecture, delivering 80 MIPS at 80 MHz internal clock under 3.0–3.6 V supply. It integrates 8 K × 24-bit on-chip RAM (configurable as Program/X/Y RAM), six-channel DMA, and a Phase-Lock Loop (PLL) for clock synthesis. It targets real-time audio and telecom signal processing in video conferencing and cellular baseband subsystems.

For engineers reviewing the DSP56301VF80B1 datasheet, DSP56301VF80B1 pinout, DSP56301VF80B1 application, or DSP56301VF80B1 equivalent, key selection considerations include its 208-pin TQFP package, HI32 host interface compatibility with PCI Rev. 2.1, ESSI dual serial ports supporting six-channel audio, triple timer module, and OnCE™/JTAG debug infrastructure.

Technical Context

The DSP56301VF80B1 implements a fully pipelined 24 × 24-bit MAC with 56-bit accumulators and barrel shifter, enabling single-cycle multiply-accumulate operations critical for FIR/IIR filtering and FFT execution. Its instruction cache and position-independent code support accelerate loop-intensive DSP algorithms while minimizing external memory accesses.

It features a 32-bit parallel HI32 host interface with glueless PCI Rev. 2.1 compliance, two independent ESSI ports (each with one receiver and three transmitters), and a serial communication interface (SCI) with baud rate generator - all multiplexed with GPIO to maximize I/O flexibility in space-constrained designs.

Key Specifications

Pinout & Package

Package: 208-pin TQFP (Thin Quad Flat Pack), 28 mm × 28 mm body, 0.5 mm pitch, thermally enhanced with exposed thermal pad. Pinout defined per Freescale DSP56301 Technical Data Rev. 10, Table 1-1 and Figure 1-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DSP56301VF80B1, the DSP56303VF100B1 offers higher clock speed in identical packaging for incremental performance scaling, while the ADSP-2189M represents a functionally overlapping but architecturally distinct alternative requiring full firmware rework and board-level I/O redesign.

Availability

DSP56301VF80B1 is available at Aetrix Electronics and suitable for video conferencing terminals, cellular baseband subsystems, and DSP resource boards requiring stable component supply across extended product lifecycles.

Supply support for DSP56301VF80B1 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) was a leading designer of embedded processors, microcontrollers, and analog solutions for automotive, industrial, and communications markets.

The DSP56300 family - including DSP56301VF80B1 - was engineered specifically for cost-sensitive, high-throughput digital signal processing in multimedia and telecommunications infrastructure, emphasizing low-power operation and PCI-hosted system integration.

FAQ

What is the maximum operating frequency of the DSP56301VF80B1?

The DSP56301VF80B1 operates at a maximum internal clock frequency of 80 MHz, delivering 80 million instructions per second (MIPS). This is achieved using an on-chip PLL that multiplies the external crystal or clock input. The device does not support the 100 MHz variant - that capability belongs to the DSP56303VF100B1, which shares the same pinout but requires higher voltage and thermal headroom. The DSP56301VF80B1 is rated for 3.0–3.6 V supply across its full temperature range.

Does the DSP56301VF80B1 support PCI bus connectivity?

Yes, the DSP56301VF80B1 supports PCI bus connectivity through its HI32 host interface, which is compliant with PCI Revision 2.1 specifications. The HI32 port provides a full 32-bit address/data multiplexed bus with arbitration signals (BR/BG/BB), error reporting (HPERR), and parity (HPAR), enabling glueless connection to standard PCI slots. This allows the DSP56301VF80B1 to serve as a coprocessor in PC-based DSP resource boards without additional interface logic.

How is memory configured on the DSP56301VF80B1?

The DSP56301VF80B1 contains 8 K × 24-bit on-chip RAM, partitioned into Program RAM, X Data RAM, Y Data RAM, and Instruction Cache - all programmable via control bits in the Instruction Cache Switch Mode register. Four configurations are supported: e.g., 4096×24 Program RAM + 2048×24 X/Y RAM (cache disabled), or 1024×24 Program RAM + 1024×24 cache + 3072×24 X/Y RAM (cache enabled). This flexibility lets designers optimize for instruction throughput versus data buffering based on algorithm requirements.

What debugging interfaces does the DSP56301VF80B1 provide?

The DSP56301VF80B1 integrates the On-Chip Emulation (OnCE™) module with a standard JTAG Test Access Port (TAP), supporting real-time debugging, hardware breakpoints, register inspection, and trace without disrupting real-time signal processing. Unlike traditional ICE, OnCE™ operates in-system with no bus cycle intrusion, making it ideal for validating time-critical audio/video algorithms. The JTAG interface also enables boundary-scan testing and flash programming during manufacturing.

Can the DSP56301VF80B1 interface directly with external DRAM?

Yes, the DSP56301VF80B1 includes an integrated DRAM controller accessible via Port A, supporting glueless interface to standard DRAM devices. It provides dedicated RAS/CAS strobes (AA0–AA3/RAS0–RAS3), refresh control, and programmable timing parameters. When hardware refresh is enabled, the DSP56301VF80B1 automatically exits Wait mode to perform DRAM refresh cycles - ensuring data integrity without CPU intervention or external refresh logic.