Texas Instruments TMS320C6671ACYPA25

Overview

TMS320C6671ACYPA25 from Texas Instruments is a single-core fixed- and floating-point digital signal processor based on the KeyStone architecture, operating at 1.25 GHz with 40 GMACs/core and 20 GFLOPs/core. It integrates 32KB L1P, 32KB L1D, 512KB L2, and 4MB MSM SRAM, and targets high-throughput signal processing in mission-critical communications infrastructure.

For engineers reviewing the TMS320C6671ACYPA25 datasheet, TMS320C6671ACYPA25 pinout, TMS320C6671ACYPA25 application, or TMS320C6671ACYPA25 equivalent, key selection criteria include its C66x core performance, integrated packet/security accelerators, DDR3-1600 interface, and compatibility with TI's C6000 software ecosystem.

Technical Context

The TMS320C6671ACYPA25 implements a single C66x DSP CorePac with IEEE 754-compliant single/double-precision floating-point execution and 90 new vector-math instructions versus C64x+. Its TeraNet switch fabric enables nonblocking internal data movement between the Multicore Navigator, MSMC, and peripherals.

Hardware acceleration is distributed across three domains: the Network Coprocessor (Packet Accelerator + Security Accelerator), Multicore Navigator (8192 hardware queues with zero-overhead packet DMA), and MSMC (memory protection for both 4MB MSM SRAM and DDR3-EMIF).

Key Specifications

Pinout & Package

The TMS320C6671ACYPA25 is housed in a 841-pin CYP BGA package (27 mm × 27 mm, 0.8 mm pitch) with thermal lid, rated for commercial temperature (0°C to 85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DSP-based signal processing applications.

Compared with TMS320C6671ACYPA25, the C6678 offers scalable multicore performance with identical software and pinout, while the C6670 trades acceleration features and speed for cost and power efficiency - making the C6671 the optimal balance for single-threaded high-throughput DSP tasks requiring integrated networking.

Availability

TMS320C6671ACYPA25 is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging systems, and industrial video analytics requiring stable component supply over extended production lifecycles.

Supply support for TMS320C6671ACYPA25 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

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The TMS320C6671ACYPA25 belongs to TI's KeyStone-based C66x DSP product line, designed specifically for high-performance, low-latency signal processing in communications infrastructure and real-time embedded systems.

FAQ

What is the maximum operating frequency of the TMS320C6671ACYPA25?

The TMS320C6671ACYPA25 operates at a maximum core frequency of 1.25 GHz, delivering 40 GMACs/core for fixed-point and 20 GFLOPs/core for floating-point computation. This frequency is achieved using TI's C66x DSP core with optimized pipeline depth and dual-issue VLIW architecture. The device maintains this speed under commercial temperature conditions (0°C to 85°C) with proper power delivery and thermal management. TMS320C6671ACYPA25 supports dynamic frequency scaling via its MAIN PLL configuration registers.

Does the TMS320C6671ACYPA25 support backward compatibility with older C6000 DSP code?

Yes, the TMS320C6671ACYPA25 is fully backward code-compatible with TI's prior C6000 fixed- and floating-point DSP generations, including C64x+ and C674x. This compatibility extends to instruction set, register mapping, and memory model - allowing existing binaries to run without modification. Software porting is simplified using TI's Code Generation Tools v8.x and SYS/BIOS RTOS. TMS320C6671ACYPA25 retains the same ABI and exception model, ensuring seamless integration into legacy signal processing frameworks.

What memory interfaces does the TMS320C6671ACYPA25 provide?

The TMS320C6671ACYPA25 integrates multiple memory interfaces: 32KB L1P and 32KB L1D on-chip caches, 512KB configurable L2 memory, 4MB MSM SRAM with memory protection, and a 64-bit DDR3-1600 external memory interface supporting up to 8GB address space with ECC. All on-chip memories implement error detection and correction. The DDR3 EMIF complies with JEDEC DDR3L standards and supports programmable timing parameters. TMS320C6671ACYPA25 does not include LPDDR or QDR interfaces.

Is the TMS320C6671ACYPA25 pin-compatible with other KeyStone devices?

Yes, the TMS320C6671ACYPA25 is pin-for-pin compatible with the TMS320C6678, C6674, and C6672 DSPs in the same CYP BGA package. This allows direct substitution in existing PCB layouts when upgrading from single-core to multicore configurations or vice versa. Pin compatibility covers power, ground, clock, JTAG, DDR3, SRIO, PCIe, HyperLink, and SGMII signals. However, unused pins on the C6671 (e.g., additional core-specific signals on multicore variants) are NC and must remain unconnected. TMS320C6671ACYPA25 shares identical mechanical and thermal specifications with these counterparts.

What development tools are supported for the TMS320C6671ACYPA25?

Texas Instruments provides full toolchain support for the TMS320C6671ACYPA25, including Code Generation Tools v8.3.12+, SYS/BIOS real-time kernel, XDS200/XDS560v2 debug probes, and Code Composer Studio v10 IDE. TI's C66x compiler supports auto-vectorization and intrinsic functions for optimized DSP math. Evaluation is enabled via the TMS320C6678 EVM (which shares pinout and software compatibility). Third-party tools like MATLAB Coder and Arm GNU Toolchain are not officially supported. TMS320C6671ACYPA25 also supports TI's Processor SDK for Linux and RTOS-based bare-metal examples.