NXP Semiconductors DSP56311VF150B1

Overview

DSP56311VF150B1 from Freescale Semiconductor is a 24-bit fixed-point digital signal processor (DSP) with a 150 MHz core clock, 1.8 V core supply, and 3.3 V I/O voltage. It integrates a 24 × 24-bit MAC unit, dual 56-bit accumulators, 56-bit barrel shifter, six-channel DMA, and an on-chip Enhanced Filter Coprocessor (EFCOP) for parallel FIR/IIR filtering. It targets multi-channel echo cancellation in IP telephony infrastructure.

For engineers reviewing the DSP56311VF150B1 datasheet, DSP56311VF150B1 pinout, DSP56311VF150B1 application, or DSP56311VF150B1 equivalent, key selection criteria include EFCOP acceleration capability, internal memory configuration flexibility (e.g., 48 K × 24-bit X/Y RAM), MAP-BGA package thermal performance, and support for asynchronous bus arbitration above 100 MHz.

Technical Context

The DSP56311VF150B1 implements a fully static, single-cycle-per-instruction DSP56000-compatible core with position-independent code support, nested hardware DO loops, and fast auto-return interrupts. Its instruction cache (1024 × 24-bit) and programmable memory mapping enable optimized execution of real-time filtering kernels.

EFCOP operates synchronously with the core at up to 150 MHz and supports adaptive LMS coefficient updates, complex FIR with decimation ratios up to 16, and DF-I/DF-II IIR filters with four selectable output scaling factors (1×, 4×, 8×, 16×). The EFCOP shares 10 K × 24-bit memory with the core.

Key Specifications

Pinout & Package

The DSP56311VF150B1 is housed in a lead-free MAP-BGA package with 256 balls (16 × 16 array), compliant with JEDEC MO-251. Pin assignment follows functional port grouping: Port A (external memory interface), Port B (HI08 host interface/GPIO), Ports C/D (dual ESSI), Port E (SCI), and dedicated PLL/clock/power pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21161NKBZ-160 and TMS320C6713BZDPA200, the DSP56311VF150B1 delivers superior energy efficiency and deterministic latency for fixed-point echo cancellation, due to its dedicated EFCOP, 24-bit datapath alignment with telecom standards, and lower 1.8 V core voltage.

Availability

DSP56311VF150B1 is available at Aetrix Electronics and suitable for IP telephony gateways, wireless infrastructure units, DSP resource boards, high-speed modem banks, and industrial signal conditioning systems requiring stable component supply and long-term lifecycle support.

Supply support for DSP56311VF150B1 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, analog and mixed-signal ICs, and connectivity solutions for automotive, industrial, and communications markets.

The DSP56311VF150B1 belongs to the DSP56300 family, engineered specifically for network infrastructure applications demanding high channel density, low-latency filtering, and integrated memory - targeting echo cancellation, correlation, and convolution-based signal processing.

FAQ

What is the maximum operating frequency of the DSP56311VF150B1 core?

The DSP56311VF150B1 operates with an internal 150 MHz clock, delivering up to 150 MMACS in core-only mode and 300 MMACS when the Enhanced Filter Coprocessor (EFCOP) is engaged. This frequency is sustained under specified 1.8 V core and 3.3 V I/O supply conditions per the Rev. 8 datasheet.

Does the DSP56311VF150B1 support external DRAM interfacing?

Yes, the DSP56311VF150B1 includes an internal DRAM controller supporting glueless interface to DRAMs up to 100 MHz. However, DRAM access is explicitly unsupported above 100 MHz - RAS, CAS, and related signals are only valid within that frequency limit per Section 1.5.3 of the datasheet.

How does the EFCOP in the DSP56311VF150B1 accelerate filtering tasks?

The EFCOP executes FIR and IIR filtering in parallel with the main DSP core at the same 150 MHz clock rate. It supports adaptive LMS coefficient updates, complex FIR with up to 16× decimation, and DF-I/DF-II IIR filters with selectable output scaling - enabling real-time echo cancellation without consuming core cycles or degrading channel throughput.

What package type is used for the DSP56311VF150B1?

The DSP56311VF150B1 uses a lead-free Molded Array Plastic Ball Grid Array (MAP-BGA) package with 256 balls in a 16 × 16 configuration. Mechanical drawings and land pattern recommendations are provided in Chapter 3 of the Rev. 8 technical data document.

Can the DSP56311VF150B1 operate without an external crystal?

Yes - the DSP56311VF150B1 accepts either a fundamental-mode crystal connected between EXTAL and XTAL, or an external buffered clock applied to the EXTAL pin alone (with XTAL left unconnected). The PLL can be disabled via the PINIT pin at reset to use EXTAL directly as the system clock source.