NXP Semiconductors DSP56311VL150B1

Overview

DSP56311VL150B1 from Freescale Semiconductor is a 24-bit fixed-point digital signal processor (DSP) with a 150 MHz internal core clock, 1.8 V core supply, and 3.3 V I/O supply. It integrates a 24 × 24-bit MAC unit, dual 48 KB data RAM banks (X/Y), 32 KB program RAM, and a dedicated Enhanced Filter Coprocessor (EFCOP) for parallel FIR/IIR filtering. It targets multi-channel echo cancellation in IP telephony infrastructure.

For engineers reviewing the DSP56311VL150B1 datasheet, DSP56311VL150B1 pinout, DSP56311VL150B1 application, or DSP56311VL150B1 equivalent, key selection criteria include EFCOP-accelerated filtering throughput (300 MMACS), MAP-BGA-256 package compatibility, 24-bit external data bus width, and support for glueless DRAM/SRAM expansion up to 256 K words.

Technical Context

The DSP56311VL150B1 implements a fully pipelined DSP56000-compatible instruction set with single-cycle execution, 56-bit barrel shifter, and two 56-bit accumulators. Its EFCOP executes real/complex FIR and direct-form IIR filters concurrently with the main core at full 150 MHz clock rate.

It features six-channel DMA with 1D/2D/3D transfers and circular buffering, programmable memory mapping (e.g., 32 KB PRAM + 1024-word instruction cache), and asynchronous bus arbitration support above 100 MHz via ABE bit control. Power management includes Wait/Stop modes and per-peripheral clock gating.

Key Specifications

Pinout & Package

Molded Array Plastic Ball Grid Array (MAP-BGA) package with 256 solder balls, 17 mm × 17 mm body, 1.0 mm ball pitch, and lead-free RoHS-compliant construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21161NKCAZ-150 and TMS320C6713BZDUA200, the DSP56311VL150B1 delivers superior energy efficiency (0.85 W typical) and deterministic filtering latency due to its tightly coupled EFCOP, making it optimal for high-channel-count echo cancellation where fixed-point determinism is critical.

Availability

DSP56311VL150B1 is available at Aetrix Electronics and suitable for IP telephony gateways, wireless base station resource boards, and high-speed modem banks requiring stable component supply and long-term lifecycle support.

Supply support for DSP56311VL150B1 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 high-performance embedded processors and analog/mixed-signal ICs for automotive, industrial, and communications markets.

The DSP56311VL150B1 belongs to the DSP56300 family, engineered specifically for network infrastructure applications demanding high internal memory bandwidth, low-latency filtering acceleration, and glueless memory expansion.

FAQ

What is the maximum operating frequency of the DSP56311VL150B1 core?

The DSP56311VL150B1 operates with a 150 MHz internal core clock, delivering up to 150 million multiply-accumulates per second (MMACS) in standard operation. When the Enhanced Filter Coprocessor (EFCOP) is active, peak throughput reaches 300 MMACS due to parallel execution of filtering algorithms alongside the main core instructions. This frequency is sustained under 1.8 V core supply with proper thermal management.

Does the DSP56311VL150B1 support external memory expansion, and what interfaces are available?

Yes, the DSP56311VL150B1 supports external memory expansion via its Port A interface, providing an 18-bit address bus (A[0–17]) and 24-bit data bus (D[0–23]). It enables glueless connection to SRAM and DRAM up to 100 MHz, with dedicated RAS/CAS signals and built-in DRAM controller logic. The device supports expansion to two 256 K × 24-bit data memory spaces and one 256 K × 24-bit program memory space.

How does the Enhanced Filter Coprocessor (EFCOP) in the DSP56311VL150B1 improve system-level performance?

The EFCOP in the DSP56311VL150B1 executes real/complex FIR and direct-form IIR filters in parallel with the main DSP core at full 150 MHz clock speed. It supports adaptive LMS coefficient updates, 4× decimation, and four programmable IIR output scaling factors - enabling real-time echo cancellation across 32+ voice channels without consuming core cycles or external memory bandwidth. This architecture reduces overall system latency and eliminates need for discrete filter ASICs.

What package type and pin count does the DSP56311VL150B1 use?

The DSP56311VL150B1 is housed in a Molded Array Plastic Ball Grid Array (MAP-BGA) package with 256 solder balls, measuring 17 mm × 17 mm with 1.0 mm ball pitch. This RoHS-compliant, lead-free package provides high I/O density and thermal dissipation suitable for compact telecom and infrastructure PCB layouts requiring signal integrity and thermal reliability.

Can the DSP56311VL150B1 operate in low-power modes, and how is power managed?

Yes, the DSP56311VL150B1 supports Wait and Stop low-power standby modes with full static design operation down to 0 Hz. Power management is instruction-dependent, peripheral-dependent, and mode-dependent - including clock gating for unused peripherals and dynamic voltage scaling for core/I/O domains. Decoupling capacitors are required on all eight dedicated power rails (VCCP, VCCQL, VCCQH, etc.) to maintain noise isolation between analog (PLL) and digital sections.