NXP Semiconductors DSP56303VF100B1

Overview

DSP56303VF100B1 from Freescale Semiconductor is a 24-bit programmable digital signal processor (DSP) built on the DSP56300 core architecture, delivering 100 MMACS at 100 MHz internal clock frequency with 3.3 V nominal supply. It integrates dual 2048 × 24-bit data RAM banks (X/Y), 4096 × 24-bit program RAM, six-channel DMA, PLL-based clock generation, and OnCE™ debug support. It targets real-time telecommunication signal processing including multi-line voice/fax/data handling.

For engineers reviewing the DSP56303VF100B1 datasheet, DSP56303VF100B1 pinout, DSP56303VF100B1 application, or DSP56303VF100B1 equivalent, key selection criteria include its 100 MHz core performance, TQFP-144 package compatibility, 24-bit parallel MAC unit, ESSI/SCI/Host interface peripheral set, and low-power STOP/WAIT modes for embedded telecom systems.

Technical Context

The DSP56303VF100B1 implements a fully static, instruction-pipelined DSP56300 core with 24 × 24-bit parallel multiplier-accumulator producing 56-bit results, two 56-bit accumulators, and a 56-bit barrel shifter supporting fast normalization and bit-stream operations. Its memory subsystem includes configurable RAM partitioning and instruction cache enable/disable control.

It features a six-channel DMA unit supporting 1D/2D/3D transfers with circular buffering, end-of-block interrupts, and triggering from peripherals or IRQ lines. The integrated PLL provides skew-eliminated clock output and allows dynamic divide factor changes without loss of lock, while OnCE™ and JTAG interfaces enable real-time hardware emulation and boundary-scan testing.

Key Specifications

Pinout & Package

DS56303VF100B1 is housed in a 144-pin Low-Profile Quad Flat Package (LQFP/TQFP) with 0.5 mm pitch, 20 × 20 mm body, and exposed thermal pad. Pin functions are grouped into Power (18 VCC/GND pairs), External Address Bus (A[0–17], 18 pins), External Data Bus (D[0–23], 24 pins), Bus Control (RD, WR, TA, BR, BG, BB, CAS, BCLK, 13 pins), Interrupt/Mode (MODA–MODD, RESET, PINIT/NMI, 6 pins), HI08 Host Interface (16 pins), ESSI0/ESSI1 (12 pins), SCI (3 pins), Timers (TIO0–TIO2, 3 pins), and OnCE/JTAG (TCK, TDI, TDO, TMS, TRST, DE, 6 pins).

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, DSP56303VF100B1 uniquely balances 100 MMACS 24-bit performance, dual ESSI for glueless multi-channel audio, and OnCE™ real-time debug-making it optimal for telecom gateways and professional audio where deterministic latency and peripheral integration are critical.

Availability

DSP56303VF100B1 is available at Aetrix Electronics and suitable for voice gateway, video conferencing terminal, and professional audio mixer designs requiring stable component supply, long-lifecycle support, and traceable sourcing for industrial deployment.

Supply support for DSP56303VF100B1 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, analog, and connectivity solutions for automotive, industrial, and networking markets.

DSP56303VF100B1 belongs to the DSP56300 family - engineered specifically for cost-effective, low-power real-time signal processing in telecommunications infrastructure and multimedia endpoints.

FAQ

What is the maximum operating frequency and voltage specification for DSP56303VF100B1?

DSP56303VF100B1 operates at a maximum internal clock frequency of 100 MHz with a nominal supply voltage of 3.3 V across all power domains (VCCP, VCCQ, VCCA, etc.). It supports a 3.0–3.6 V operating range and is fully static - functional down to 0 Hz. The 100 MHz clock is generated internally via PLL from EXTAL, enabling precise timing control without external clock distribution.

Does DSP56303VF100B1 support external memory expansion, and what are the address space limits?

Yes, DSP56303VF100B1 supports external memory expansion through Port A: up to two 256 K × 24-bit data memory spaces and one 256 K × 24-bit program memory space. Address bus A[0–17] provides 18-bit addressing, and chip select logic (AA[0–3]/RAS[0–3]) enables glueless interface to SRAM and DRAM. The external bus controller supports programmable wait states and transfer acknowledge (TA) extension.

How many serial interfaces does DSP56303VF100B1 integrate, and what are their roles?

DSP56303VF100B1 integrates three serial interfaces: two Enhanced Synchronous Serial Interfaces (ESSI0 and ESSI1), each with one receiver and three transmitters, and one Serial Communication Interface (SCI) with baud rate generator. ESSI ports support multi-channel audio streaming (e.g., 6-channel home theater), while SCI handles asynchronous host communication or modem control. All are multiplexed with GPIO and configurable via peripheral control registers.

What debug and emulation capabilities does DSP56303VF100B1 provide?

DSP56303VF100B1 includes an OnCE™ (On-Chip Emulation) module and standard JTAG test access port (TAP). OnCE™ enables real-time, non-intrusive debugging - including breakpoints, watchpoints, register inspection, and instruction trace - without halting CPU execution. JTAG supports boundary-scan testing and programming. Both interfaces operate concurrently and are accessible via dedicated pins (TCK, TDI, TDO, TMS, TRST, DE).

What power management features are implemented in DSP56303VF100B1?

DSP56303VF100B1 implements Wait and Stop low-power standby modes, both triggered by software. In Wait mode, the core clock stops but peripherals remain active; in Stop mode, all clocks halt except for wake-up sources (IRQ, PINIT, TA). Its fully static CMOS design allows operation down to 0 Hz, and power management circuitry adapts consumption based on instruction type, peripheral usage, and mode - achieving sub-milliwatt idle power in Stop mode.