NXP Semiconductors DSP56301VF80

Overview

DSP56301VF80 from Freescale Semiconductor is a 24-bit programmable digital signal processor (DSP) with an 80 MHz internal clock, 80 MIPS performance, 3.0–3.6 V supply, and integrated 8 K × 24-bit internal RAM (configurable as program/data/ICache). It executes DSP56300 core instructions and targets real-time multimedia and telecom signal processing in video conferencing and cellular baseband subsystems.

For engineers reviewing the DSP56301VF80 datasheet, DSP56301VF80 pinout, DSP56301VF80 application, or DSP56301VF80 equivalent, key selection factors include its 24-bit MAC architecture, HI32 host interface compliance with PCI Rev. 2.1, ESSI dual serial ports for multi-channel audio, triple timer module, and TQFP-208 package with 42 GPIOs.

Technical Context

The DSP56301VF80 implements the DSP56300 core with a fully pipelined 24 × 24-bit MAC producing 56-bit results, two 56-bit accumulators, and a 56-bit barrel shifter for fast normalization and bit manipulation. Its instruction cache controller supports position-independent code and nested hardware DO loops.

It integrates six-channel DMA supporting 1D/2D/3D transfers and circular buffering, a PLL with skew-eliminated CLKOUT, OnCE™ debug module, JTAG TAP, and external memory expansion up to 16 M × 24-bit words in 24-bit mode - all operating at DC to 80 MHz with wait/stop low-power modes.

Key Specifications

Pinout & Package

The DSP56301VF80 is housed in a 208-pin Thin Quad Flat Pack (TQFP) with exposed thermal pad, compliant with JEDEC MO-137AC. Pin assignments follow functional groupings: 24-bit address bus (A[0–23]), 24-bit data bus (D[0–23]), HI32 host port (52 signals), dual ESSI (12 signals), SCI (3 signals), timers (3 signals), JTAG/OnCE (6 signals), and dedicated power/ground domains (25 VCC, 26 GND pins).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DSP56301VF80, the DSP56303VF100 offers higher deterministic throughput at the cost of stricter supply regulation, while the ADSP-2189M trades fixed-point efficiency for floating-point flexibility and larger memory - neither is pin-compatible, but both serve overlapping telecom/media markets with distinct architectural trade-offs.

Availability

DSP56301VF80 is available at Aetrix Electronics and suitable for video conferencing systems, cellular infrastructure equipment, and high-speed modem banks requiring stable component supply and long-term industrial lifecycle support.

Supply support for DSP56301VF80 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 ICs before its acquisition by NXP Semiconductors in 2015; it pioneered the DSP56000/DSP56300 families for real-time signal processing.

The DSP56300 family - including the DSP56301VF80 - was engineered for cost-sensitive, high-volume telecom and multimedia applications demanding deterministic 24-bit fixed-point performance with integrated peripherals and low-power operation.

FAQ

What is the maximum operating frequency of the DSP56301VF80?

The DSP56301VF80 operates at a maximum internal core clock frequency of 80 MHz, delivering 80 million instructions per second (MIPS). This frequency is generated internally via its integrated Phase-Locked Loop (PLL) from the external EXTAL input, and the device remains fully functional down to 0 Hz in Stop/Wait low-power modes. The 80 MHz rating is specified across the full 3.0–3.6 V supply range and commercial temperature grade.

Does the DSP56301VF80 support PCI bus interfacing?

Yes, the DSP56301VF80 supports PCI bus interfacing through its HI32 host interface, which is compliant with PCI Revision 2.1 specifications. The HI32 port provides 52 dedicated signals including HAD[0–31], HA[0–10], HD[0–15], and control lines such as HFRAME, HTRDY, and HDEVSEL. It enables glueless connection to x86 hosts or FPGAs without external logic, and 24 of its signals (PB[0–23]) can be reconfigured as general-purpose I/O when PCI mode is disabled.

How much internal memory does the DSP56301VF80 have, and how is it allocated?

The DSP56301VF80 contains 8 K × 24-bit (192 Kbit) of on-chip RAM, partitioned into Program RAM, X Data RAM, Y Data RAM, and Instruction Cache. Four configuration modes allow dynamic allocation - for example, 4096×24 bits Program RAM + 2048×24 bits X RAM + 2048×24 bits Y RAM with cache disabled, or 1024×24 bits cache + 3072×24 bits Program RAM + 3072×24 bits Y RAM with X RAM disabled. Allocation is controlled via the Instruction Cache Switch and Mode bits in the System Configuration Register.

What serial interfaces are integrated into the DSP56301VF80?

The DSP56301VF80 integrates three serial interfaces: two Enhanced Synchronous Serial Interfaces (ESSI0 and ESSI1), each with one receiver and three transmitters (supporting up to six-channel audio), and one Serial Communication Interface (SCI) with baud-rate generator for UART-style asynchronous communication. ESSI signals (SCKx, SRDx, STDx, SC[x0–x2]) are multiplexed with Port C and Port D GPIOs, while SCI signals (RXD, TXD, SCLK) share Port E pins (PE0–PE2), allowing flexible pin assignment based on system requirements.

Is the DSP56301VF80 still in production, and what package options are available?

The DSP56301VF80 is a legacy part originally offered in 208-pin TQFP (VF suffix) and 252-pin MAP-BGA packages. While Freescale discontinued active production after its acquisition by NXP, Aetrix Electronics maintains verified, traceable inventory of the TQFP-208 variant (DSP56301VF80) for industrial and telecom customers requiring long-term supply continuity. Lead-free and lead-bearing versions were both manufactured, and current stock meets RoHS-6 compliance.