Texas Instruments TMS320C6678AXCYP

Overview

TMS320C6678AXCYP from Texas Instruments is an eight-core fixed- and floating-point digital signal processor based on the KeyStone multicore architecture, operating at up to 1.4 GHz per core with 44.8 GMAC/core (fixed-point) and 22.4 GFLOP/core (floating-point). It integrates 32 KB L1P, 32 KB L1D, and 512 KB L2 memory per core, 4 MB shared MSM SRAM, and a 64-bit DDR3-1600 interface. It serves in high-throughput signal processing pipelines for radar baseband, wireless infrastructure baseband, and real-time video analytics.

For engineers reviewing the TMS320C6678AXCYP datasheet, TMS320C6678AXCYP pinout, TMS320C6678AXCYP application, or TMS320C6678AXCYP equivalent, this page delivers verified core count, clock speed, memory hierarchy, accelerator capabilities (Network Coprocessor, Multicore Navigator), and thermal grade - all confirmed for the AXCYP variant with GYP package and extended temperature range (–40°C to 100°C).

Technical Context

The TMS320C6678AXCYP implements TI's KeyStone architecture centered on four hardware pillars: TeraNet (non-blocking 2-Tbps switch fabric), Multicore Navigator (8192-hardware-queue packet dispatcher), Multicore Shared Memory Controller (direct access to 4 MB MSM SRAM and DDR3-1600 with ECC), and HyperLink (50-Gbaud chip-to-chip interconnect). These enable zero-overhead data movement and scalable resource orchestration across all eight C66x cores.

Its Network Coprocessor contains two dedicated accelerators: a Packet Accelerator supporting 1.5 Mpackets/s wire-speed IPsec/GTP-U/SCTP/PDCP processing with L2–L4 classification, and a Security Accelerator delivering up to 2.8 Gbps encryption (AES/SHA/3DES/Kasumi/SNOW3G) for transport- and air-interface security protocols including 3GPP and WiMAX.

Key Specifications

Pinout & Package

The TMS320C6678AXCYP is housed in an 841-pin FC-BGA package (GYP suffix), measuring 35 mm × 35 mm with 0.8 mm pitch. It features 16 GPIOs, dual SGMII ports, four SRIO lanes, two PCIe lanes, HyperLink differential pairs, DDR3 address/control/data buses, and dedicated JTAG/debug interfaces.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multicore DSP applications.

Compared with TMS320C6678AXCYP, the TMS320C6670AYZHA trades core count and accelerators for lower power and BOM cost, while the AM5728 shifts focus from DSP-centric signal flow to ARM-driven system control - making TMS320C6678AXCYP uniquely suited for latency-critical, compute-bound, and protocol-aware signal infrastructure.

Availability

TMS320C6678AXCYP is available at Aetrix Electronics and suitable for radar signal processing, 5G baseband development, medical imaging reconstruction, and real-time video analytics requiring stable component supply across extended temperature and long-lifecycle deployments.

Supply support for TMS320C6678AXCYP 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 leader specializing in analog, embedded processing, and digital signal technologies, with decades of heritage in high-performance DSP innovation.

The TMS320C6678AXCYP belongs to TI's KeyStone multicore DSP product line, engineered for mission-critical signal infrastructure demanding deterministic parallel processing, hardware-accelerated networking, and scalable inter-chip communication in aerospace, defense, and telecom equipment.

FAQ

What is the maximum operating frequency of the TMS320C6678AXCYP?

The TMS320C6678AXCYP operates at up to 1.4 GHz per core under extended temperature conditions (–40°C to 100°C), as validated in the SPRS691E datasheet revision. This frequency enables 44.8 GMAC/core (fixed-point) and 22.4 GFLOP/core (floating-point) performance, with all eight cores functional simultaneously. The AXCYP variant is specifically rated for this speed grade in the GYP package.

Does the TMS320C6678AXCYP include hardware accelerators for networking protocols?

Yes, the TMS320C6678AXCYP integrates a dedicated Network Coprocessor comprising two units: a Packet Accelerator supporting wire-speed IPsec, GTP-U, SCTP, and PDCP at 1.5 Mpackets/s, and a Security Accelerator delivering up to 2.8 Gbps encryption for AES, SHA, Kasumi, and SNOW3G. These operate independently of the C66x cores and are confirmed for the TMS320C6678AXCYP in the device's functional block diagram and feature list.

What memory resources are available on the TMS320C6678AXCYP?

The TMS320C6678AXCYP provides 32 KB L1P, 32 KB L1D, and 512 KB configurable L2 memory per core, plus 4096 KB of shared MSM SRAM accessible by all eight cores and accelerators. It also supports an external 64-bit DDR3-1600 interface with ECC, enabling up to 8 GB of addressable memory - all explicitly specified for the TMS320C6678AXCYP in Section 1.1 and Figure 1-1 of SPRS691E.

Is the TMS320C6678AXCYP pin-compatible with other C6678 variants?

Yes, the TMS320C6678AXCYP uses the same 841-pin GYP FC-BGA package as other C6678 speed grades (e.g., AY and AZ suffixes), with identical mechanical footprint, ball map, and thermal pad layout. Pin functions and electrical characteristics are consistent across the family, as confirmed in the "Package Terminals" and "Pin Map" sections (pages 39–43) of SPRS691E.

What development tools support the TMS320C6678AXCYP?

Texas Instruments provides full toolchain support for the TMS320C6678AXCYP, including the C6000 compiler, Code Generation Tools v8.x+, Code Composer Studio IDE v6+, and the TMDXEVM6678L evaluation module. Debugging is enabled via JTAG and SWD interfaces, and profiling leverages hardware trace and Advanced Event Triggering (AET) - all documented in Section 2.9 of SPRS691E and validated for the AXCYP variant.