NXP Semiconductors DSP56301AG100

Overview

DSP56301AG100 from Freescale Semiconductor is a 24-bit programmable digital signal processor (DSP) with an 80/100 MHz internal clock, 3.0–3.6 V supply, and DSP56300 core architecture featuring a 24×24+56→56-bit MAC, dual 56-bit accumulators, and integrated instruction cache. It targets real-time multimedia and telecom signal processing including video conferencing and cellular baseband.

For engineers reviewing the DSP56301AG100 datasheet, DSP56301AG100 pinout, DSP56301AG100 application, or DSP56301AG100 equivalent, key selection criteria include its 100 MIPS performance at 100 MHz, TQFP-208 package, 8 K × 24-bit internal RAM configuration, and support for ESSI/SCI/PCI-compatible HI32 host interface.

Technical Context

The DSP56301AG100 implements a fully pipelined DSP56300 core with parallel ALU, barrel shifter, and six-channel DMA supporting 1D/2D/3D transfers and circular buffering. Its PLL enables clock multiplication with skew elimination and dynamic DF adjustment without loss of lock.

Memory subsystem includes configurable internal RAM partitions (Program, X/Y Data, Instruction Cache), boot ROM, and external expansion to 16 M × 24-bit program/data spaces. Peripherals include triple timer, JTAG/OnCE debug interface, two ESSI ports (each with 1 Rx + 3 Tx), SCI, and 42 GPIOs multiplexed across five I/O ports.

Key Specifications

Pinout & Package

The DSP56301AG100 is housed in a 208-pin Thin Quad Flat Pack (TQFP) package with exposed thermal pad, compliant with JEDEC MO-137AC. Pin assignments are functionally grouped into Power (25 pins), Ground (26 pins), External Address Bus A[0–23] (24 pins), External Data Bus D[0–23] (24 pins), Host Interface Port B (52 pins), ESSI Ports C/D (12 pins), SCI Port E (3 pins), Timers (3 pins), PLL (3 pins), JTAG/OnCE (6 pins), and Interrupt/Mode Control (5 pins).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DSP56301AG100, DSP56303AG100 offers higher on-chip memory density without layout changes, while ADSP-2189M trades PCI integration for SHARC ecosystem compatibility - making DSP56301AG100 optimal for cost-sensitive, PCI-connected telecom infrastructure where code reuse and glueless host interfacing are primary drivers.

Availability

DSP56301AG100 is available at Aetrix Electronics and suitable for video conferencing terminals, cellular baseband modules, and high-speed modem banks requiring stable component supply across extended production lifecycles.

Supply support for DSP56301AG100 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, microcontrollers, and analog semiconductors, later acquired by NXP Semiconductors in 2015.

The DSP56300 family - including DSP56301AG100 - was engineered for high-performance, low-power digital signal processing in wireless infrastructure, telecom gateways, and multimedia endpoints.

FAQ

What is the maximum operating frequency of the DSP56301AG100?

The DSP56301AG100 operates at a maximum internal clock frequency of 100 MHz, delivering 100 million instructions per second (MIPS). This frequency is achieved using the on-chip PLL with appropriate external crystal (EXTAL) input and PCAP filter capacitor. The device maintains full functionality across its specified 3.0–3.6 V supply range at this speed, and its fully static design permits operation down to 0 Hz for ultra-low-power stop modes. DSP56301AG100 timing parameters are validated per AC Electrical Characteristics in Rev. 10 datasheet.

Does the DSP56301AG100 support PCI bus interfacing?

Yes, the DSP56301AG100 integrates a 32-bit Universal Host Interface (HI32) compliant with PCI Revision 2.1 specifications. It supports glueless connection to PCI buses using only 74LS45-style buffers and provides full PCI signaling including parity, error reporting (HPERR), bus request/grant (BR/BG), and lock (BL). The HI32 port is implemented on Port B (52 pins) and can be configured as general-purpose I/O when PCI is not used. DSP56301AG100's HI32 eliminates need for external bridge logic in host-processor designs.

How much internal memory does the DSP56301AG100 have, and how is it allocated?

The DSP56301AG100 contains 8 K × 24 bits of on-chip RAM, partitioned into Program RAM, X Data RAM, Y Data RAM, and optional Instruction Cache - all configurable via control registers. Default allocation is 4096 × 24-bit Program RAM, 2048 × 24-bit X Data RAM, and 2048 × 24-bit Y Data RAM, with Instruction Cache disabled. Alternative configurations include enabling cache (up to 1024 × 24-bit) or reallocating RAM to data buffers. DSP56301AG100 also includes 3 K × 24-bit bootstrap ROM for secure boot.

What serial interfaces are available on the DSP56301AG100?

The DSP56301AG100 provides three dedicated serial interfaces: two Enhanced Synchronous Serial Interfaces (ESSI0 and ESSI1), each with one receiver and three transmitters supporting up to six-channel audio I/O, and one Serial Communication Interface (SCI) with baud rate generator for asynchronous UART-style communication. ESSI signals are multiplexed with Port C and Port D GPIOs; SCI uses Port E pins. All interfaces operate independently and can run concurrently. DSP56301AG100's ESSI architecture enables home theater-grade multi-channel audio without external serializer/deserializer chips.

Is the DSP56301AG100 pin-compatible with other devices in the DSP56300 family?

The DSP56301AG100 shares the same 208-pin TQFP package footprint and core signal mapping with DSP56303AG100 and DSP56309AG100, enabling mechanical compatibility and PCB reuse. However, differences in on-chip memory size, peripheral enablement, and certain control register bits require firmware validation. Pinouts for HI32, ESSI, SCI, and timers are identical; variations exist only in unused NC pins and internal feature enablement. DSP56301AG100's pinout is documented in Chapter 3 of Rev. 10 Technical Data and matches MAP-BGA variants only in functional grouping - not physical pin-for-pin equivalence.