The TMS320C6678ACYPA25 is a high-performance multicore digital signal processor (DSP) from Texas Instruments (TI), 

based on the innovative KeyStone multicore architecture. This device integrates eight C66x CorePac DSP cores, 

each capable of running at up to 1.25GHz, 

delivering an aggregate performance of 320 GMAC (fixed-point) and 160 GFLOP (floating-point) computational power.

The memory architecture of the TMS320C6678ACYPA25 is robustly designed, featuring:

• 32KB L1P program cache and 32KB L1D data cache per DSP core

• 512KB dedicated L2 cache for each core

• 4MB shared L2 cache for inter-core communication

• On-chip memory resources including 128kB ROM and 8.5MB RAM

• Support for up to 8GB addressable DDR3 external memory via a 64-bit DDR3-1600 interface.

The processor comes in an 841-pin FCBGA package (24x24mm) and operates within an industrial temperature range of -40°C to 100°C. I

t features a core voltage of 1.0V with I/O voltages supporting 1.0V, 1.5V, and 1.8V standards. 

Advanced power management techniques including multiple power domains and dynamic voltage/frequency scaling (DVFS) enable optimal energy efficiency.

Key Functional Features

Multicore Processing Capability

The TMS320C6678ACYPA25's eight C66x DSP cores can operate independently or collaboratively through 

TI's Multicore Navigator and TeraNet switch fabric (with 2TB/s bandwidth). 

This architecture excels in parallel signal processing algorithms like multi-channel baseband processing and large-scale matrix operations.

 Each core delivers up to 5.0 GMAC/s at 1.25GHz, resulting in the chip's impressive 320GMAC fixed-point and 160GFLOP floating-point performance.

High-Speed Interfaces

The processor integrates multiple high-speed serial interfaces:

• Quad-channel SRIO 2.1 (5Gbaud full-duplex per channel)

• Dual-channel PCIe Gen2 (5Gbaud per channel)

• HyperLink (50Gbaud full-duplex)

• Two SGMII Ethernet ports supporting 10/100/1000Mbps operations.

Dedicated Acceleration Engines

Beyond the DSP cores, the chip includes specialized hardware accelerators:

• Network coprocessor (Packet Accelerator)

• Security accelerator (supporting AES, DES/3DES, SHA algorithms)

• Telecom-specific peripherals including two Telecom Serial Interface Ports (TSIP).

Development Support

TI provides comprehensive software development tools:

• Code Composer Studio (CCS) IDE

• DSP/BIOS real-time OS

• Multicore Software Development Kit (MCSDK)

• Extensive algorithm libraries

• Backward compatibility with TI's TMS320C6000 DSP family.

Typical Application Scenarios

Communications Infrastructure

The TMS320C6678ACYPA25 is ideal for 5G base stations, media gateways, and IMS media servers. 

Its multicore architecture efficiently handles multi-channel baseband signals, 

with each DSP core processing different user streams. When combined with FPGAs or ASICs via SRIO/PCIe interfaces, 

it forms complete physical layer solutions. 

TI documentation shows the C6678 can triple channel density in media gateways compared to previous generations

The following parts are popular search parts in Embedded - DSP (Digital Signal Processors).

The following parts include "TMS320C6678ACYPA25" in ISSI, Integrated Silicon Solution Inc“TMS320C6678ACYPA25”.

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